CVE-2023-50387

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2023-50387
Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the "KeyTrap" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records.

7.5 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
http://www.openwall.com/lists/oss-security/2024/02/16/2 Mailing List
http://www.openwall.com/lists/oss-security/2024/02/16/3 Mailing List
https://access.redhat.com/security/cve/CVE-2023-50387 Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1219823 Issue Tracking
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html Third Party Advisory
https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1 Patch
https://kb.isc.org/docs/cve-2023-50387 Third Party Advisory VDB Entry
https://lists.debian.org/debian-lts-announce/2024/02/msg00006.html
https://lists.debian.org/debian-lts-announce/2024/05/msg00011.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6FV5O347JTX7P5OZA6NGO4MKTXRXMKOZ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/ Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGSLGKUAQTW5JPPZCMF5YPEYALLRUZZ6/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/ Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/ Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEXGOYGW7DBS3N2QSSQONZ4ENIRQEAPG/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQESRWMJCF4JEYJEAKLRM6CT55GLJAB7/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/
https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html Mailing List Third Party Advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-50387 Patch Vendor Advisory
https://news.ycombinator.com/item?id=39367411 Third Party Advisory
https://news.ycombinator.com/item?id=39372384 Issue Tracking
https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/ Vendor Advisory
https://security.netapp.com/advisory/ntap-20240307-0007/
https://www.athene-center.de/aktuelles/key-trap Third Party Advisory
https://www.athene-center.de/fileadmin/content/PDF/Technical_Report_KeyTrap.pdf Technical Description Third Party Advisory
https://www.isc.org/blogs/2024-bind-security-release/ Third Party Advisory
https://www.securityweek.com/keytrap-dns-attack-could-disable-large-parts-of-internet-researchers/ Press/Media Coverage Third Party Advisory
https://www.theregister.com/2024/02/13/dnssec_vulnerability_internet/ Patch Third Party Advisory
http://www.openwall.com/lists/oss-security/2024/02/16/2 Mailing List
http://www.openwall.com/lists/oss-security/2024/02/16/3 Mailing List
https://access.redhat.com/security/cve/CVE-2023-50387 Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1219823 Issue Tracking
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html Third Party Advisory
https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1 Patch
https://kb.isc.org/docs/cve-2023-50387 Third Party Advisory VDB Entry
https://lists.debian.org/debian-lts-announce/2024/02/msg00006.html
https://lists.debian.org/debian-lts-announce/2024/05/msg00011.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6FV5O347JTX7P5OZA6NGO4MKTXRXMKOZ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/ Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGSLGKUAQTW5JPPZCMF5YPEYALLRUZZ6/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/ Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/ Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEXGOYGW7DBS3N2QSSQONZ4ENIRQEAPG/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQESRWMJCF4JEYJEAKLRM6CT55GLJAB7/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/
https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html Mailing List Third Party Advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-50387 Patch Vendor Advisory
https://news.ycombinator.com/item?id=39367411 Third Party Advisory
https://news.ycombinator.com/item?id=39372384 Issue Tracking
https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/ Vendor Advisory
https://security.netapp.com/advisory/ntap-20240307-0007/
https://www.athene-center.de/aktuelles/key-trap Third Party Advisory
https://www.athene-center.de/fileadmin/content/PDF/Technical_Report_KeyTrap.pdf Technical Description Third Party Advisory
https://www.isc.org/blogs/2024-bind-security-release/ Third Party Advisory
https://www.securityweek.com/keytrap-dns-attack-could-disable-large-parts-of-internet-researchers/ Press/Media Coverage Third Party Advisory
https://www.theregister.com/2024/02/13/dnssec_vulnerability_internet/ Patch Third Party Advisory
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*

Configuration 2 (hide)

OR cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022_23h2:-:*:*:*:*:*:*:*

Configuration 3 (hide)

cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*

Configuration 4 (hide)

cpe:2.3:a:thekelleys:dnsmasq:*:*:*:*:*:*:*:*

Configuration 5 (hide)

cpe:2.3:a:nic:knot_resolver:*:*:*:*:*:*:*:*

Configuration 6 (hide)

OR cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*

Configuration 7 (hide)

OR cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*
cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*
cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*

Configuration 8 (hide)

cpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*
History

21 Nov 2024, 08:36

Type Values Removed Values Added
References () http://www.openwall.com/lists/oss-security/2024/02/16/2 - Mailing List () http://www.openwall.com/lists/oss-security/2024/02/16/2 - Mailing List
References () http://www.openwall.com/lists/oss-security/2024/02/16/3 - Mailing List () http://www.openwall.com/lists/oss-security/2024/02/16/3 - Mailing List
References () https://access.redhat.com/security/cve/CVE-2023-50387 - Third Party Advisory () https://access.redhat.com/security/cve/CVE-2023-50387 - Third Party Advisory
References () https://bugzilla.suse.com/show_bug.cgi?id=1219823 - Issue Tracking () https://bugzilla.suse.com/show_bug.cgi?id=1219823 - Issue Tracking
References () https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html - Third Party Advisory () https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html - Third Party Advisory
References () https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1 - Patch () https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1 - Patch
References () https://kb.isc.org/docs/cve-2023-50387 - Third Party Advisory, VDB Entry () https://kb.isc.org/docs/cve-2023-50387 - Third Party Advisory, VDB Entry
References () https://lists.debian.org/debian-lts-announce/2024/02/msg00006.html - () https://lists.debian.org/debian-lts-announce/2024/02/msg00006.html -
References () https://lists.debian.org/debian-lts-announce/2024/05/msg00011.html - () https://lists.debian.org/debian-lts-announce/2024/05/msg00011.html -
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6FV5O347JTX7P5OZA6NGO4MKTXRXMKOZ/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6FV5O347JTX7P5OZA6NGO4MKTXRXMKOZ/ -
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/ - Mailing List () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/ - Mailing List
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/ -
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGSLGKUAQTW5JPPZCMF5YPEYALLRUZZ6/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGSLGKUAQTW5JPPZCMF5YPEYALLRUZZ6/ -
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/ - Mailing List () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/ - Mailing List
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/ -
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/ - Mailing List () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/ - Mailing List
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEXGOYGW7DBS3N2QSSQONZ4ENIRQEAPG/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEXGOYGW7DBS3N2QSSQONZ4ENIRQEAPG/ -
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQESRWMJCF4JEYJEAKLRM6CT55GLJAB7/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQESRWMJCF4JEYJEAKLRM6CT55GLJAB7/ -
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/ -
References () https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html - Mailing List, Third Party Advisory () https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html - Mailing List, Third Party Advisory
References () https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-50387 - Patch, Vendor Advisory () https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-50387 - Patch, Vendor Advisory
References () https://news.ycombinator.com/item?id=39367411 - Third Party Advisory () https://news.ycombinator.com/item?id=39367411 - Third Party Advisory
References () https://news.ycombinator.com/item?id=39372384 - Issue Tracking () https://news.ycombinator.com/item?id=39372384 - Issue Tracking
References () https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/ - Vendor Advisory () https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/ - Vendor Advisory
References () https://security.netapp.com/advisory/ntap-20240307-0007/ - () https://security.netapp.com/advisory/ntap-20240307-0007/ -
References () https://www.athene-center.de/aktuelles/key-trap - Third Party Advisory () https://www.athene-center.de/aktuelles/key-trap - Third Party Advisory
References () https://www.athene-center.de/fileadmin/content/PDF/Technical_Report_KeyTrap.pdf - Technical Description, Third Party Advisory () https://www.athene-center.de/fileadmin/content/PDF/Technical_Report_KeyTrap.pdf - Technical Description, Third Party Advisory
References () https://www.isc.org/blogs/2024-bind-security-release/ - Third Party Advisory () https://www.isc.org/blogs/2024-bind-security-release/ - Third Party Advisory
References () https://www.securityweek.com/keytrap-dns-attack-could-disable-large-parts-of-internet-researchers/ - Press/Media Coverage, Third Party Advisory () https://www.securityweek.com/keytrap-dns-attack-could-disable-large-parts-of-internet-researchers/ - Press/Media Coverage, Third Party Advisory
References () https://www.theregister.com/2024/02/13/dnssec_vulnerability_internet/ - Patch, Third Party Advisory () https://www.theregister.com/2024/02/13/dnssec_vulnerability_internet/ - Patch, Third Party Advisory

10 Jun 2024, 17:16

Type Values Removed Values Added
References
  • () https://lists.debian.org/debian-lts-announce/2024/05/msg00011.html -

07 Mar 2024, 17:15

Type Values Removed Values Added
References
  • () https://security.netapp.com/advisory/ntap-20240307-0007/ -

04 Mar 2024, 03:15

Type Values Removed Values Added
References
  • () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/ -

29 Feb 2024, 03:15

Type Values Removed Values Added
References
  • () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGSLGKUAQTW5JPPZCMF5YPEYALLRUZZ6/ -
  • () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6FV5O347JTX7P5OZA6NGO4MKTXRXMKOZ/ -

26 Feb 2024, 16:27

Type Values Removed Values Added
References
  • () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/ -
  • () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/ -

23 Feb 2024, 02:15

Type Values Removed Values Added
References
  • () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQESRWMJCF4JEYJEAKLRM6CT55GLJAB7/ -
  • () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEXGOYGW7DBS3N2QSSQONZ4ENIRQEAPG/ -

21 Feb 2024, 13:15

Type Values Removed Values Added
References
  • () https://lists.debian.org/debian-lts-announce/2024/02/msg00006.html -

20 Feb 2024, 16:55

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.5
CWE CWE-770
CPE cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
cpe:2.3:a:thekelleys:dnsmasq:*:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022_23h2:-:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
cpe:2.3:a:nic:knot_resolver:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:*
cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
First Time Isc bind
Redhat
Redhat enterprise Linux
Microsoft windows Server 2022
Powerdns recursor
Microsoft windows Server 2008
Microsoft windows Server 2019
Nic knot Resolver
Microsoft
Powerdns
Microsoft windows Server 2016
Fedoraproject
Fedoraproject fedora
Microsoft windows Server 2012
Isc
Nlnetlabs
Thekelleys dnsmasq
Microsoft windows Server 2022 23h2
Nlnetlabs unbound
Thekelleys
Nic
References () https://bugzilla.suse.com/show_bug.cgi?id=1219823 - () https://bugzilla.suse.com/show_bug.cgi?id=1219823 - Issue Tracking
References () https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html - () https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html - Mailing List, Third Party Advisory
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/ - Mailing List
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/ - Mailing List
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/ - Mailing List
References () https://kb.isc.org/docs/cve-2023-50387 - () https://kb.isc.org/docs/cve-2023-50387 - Third Party Advisory, VDB Entry
References () https://www.athene-center.de/fileadmin/content/PDF/Technical_Report_KeyTrap.pdf - () https://www.athene-center.de/fileadmin/content/PDF/Technical_Report_KeyTrap.pdf - Technical Description, Third Party Advisory
References () https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-50387 - () https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-50387 - Patch, Vendor Advisory
References () https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1 - () https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1 - Patch
References () https://access.redhat.com/security/cve/CVE-2023-50387 - () https://access.redhat.com/security/cve/CVE-2023-50387 - Third Party Advisory
References () https://www.securityweek.com/keytrap-dns-attack-could-disable-large-parts-of-internet-researchers/ - () https://www.securityweek.com/keytrap-dns-attack-could-disable-large-parts-of-internet-researchers/ - Press/Media Coverage, Third Party Advisory
References () https://www.theregister.com/2024/02/13/dnssec_vulnerability_internet/ - () https://www.theregister.com/2024/02/13/dnssec_vulnerability_internet/ - Patch, Third Party Advisory
References () https://news.ycombinator.com/item?id=39372384 - () https://news.ycombinator.com/item?id=39372384 - Issue Tracking
References () https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/ - () https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/ - Vendor Advisory
References () https://www.isc.org/blogs/2024-bind-security-release/ - () https://www.isc.org/blogs/2024-bind-security-release/ - Third Party Advisory
References () https://news.ycombinator.com/item?id=39367411 - () https://news.ycombinator.com/item?id=39367411 - Third Party Advisory
References () https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html - () https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html - Third Party Advisory
References () http://www.openwall.com/lists/oss-security/2024/02/16/2 - () http://www.openwall.com/lists/oss-security/2024/02/16/2 - Mailing List
References () http://www.openwall.com/lists/oss-security/2024/02/16/3 - () http://www.openwall.com/lists/oss-security/2024/02/16/3 - Mailing List
References () https://www.athene-center.de/aktuelles/key-trap - () https://www.athene-center.de/aktuelles/key-trap - Third Party Advisory

19 Feb 2024, 03:15

Type Values Removed Values Added
References
  • () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/ -
  • () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/ -

18 Feb 2024, 02:15

Type Values Removed Values Added
References
  • () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/ -

16 Feb 2024, 21:15

Type Values Removed Values Added
References
  • () http://www.openwall.com/lists/oss-security/2024/02/16/3 -

16 Feb 2024, 20:15

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References
  • () http://www.openwall.com/lists/oss-security/2024/02/16/2 -

15 Feb 2024, 19:15

Type Values Removed Values Added
References
  • {'url': 'https://datatracker.ietf.org/doc/html/rfc4035', 'name': 'https://datatracker.ietf.org/doc/html/rfc4035', 'tags': [], 'refsource': ''}
  • () https://www.athene-center.de/fileadmin/content/PDF/Technical_Report_KeyTrap.pdf -
Summary Certain DNSSEC aspects of the DNS protocol (in RFC 4035 and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses when there is a zone with many DNSKEY and RRSIG records, aka the "KeyTrap" issue. The protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records. Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the "KeyTrap" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records.

15 Feb 2024, 01:15

Type Values Removed Values Added
References
  • () https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-50387 -
  • () https://bugzilla.suse.com/show_bug.cgi?id=1219823 -
  • () https://access.redhat.com/security/cve/CVE-2023-50387 -

15 Feb 2024, 00:15

Type Values Removed Values Added
References
  • () https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1 -
  • () https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html -

14 Feb 2024, 20:15

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References
  • () https://news.ycombinator.com/item?id=39372384 -

14 Feb 2024, 16:15

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New CVE
Information

Published : 2024-02-14 16:15

Updated : 2024-11-21 08:36

NVD link : CVE-2023-50387

Mitre link : CVE-2023-50387

CVE.ORG link : CVE-2023-50387

JSON object : View

Products Affected

microsoft

  • windows_server_2008
  • windows_server_2012
  • windows_server_2022_23h2
  • windows_server_2022
  • windows_server_2016
  • windows_server_2019

nlnetlabs

  • unbound

fedoraproject

  • fedora

nic

  • knot_resolver

powerdns

  • recursor

isc

  • bind

thekelleys

  • dnsmasq

redhat

  • enterprise_linux
CWE
CWE-770

Allocation of Resources Without Limits or Throttling