CVE-2021-39921

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-39921
NULL pointer exception in the Modbus dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file

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

5.0 /10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References
Link Resource
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39921.json Third Party Advisory
https://gitlab.com/wireshark/wireshark/-/issues/17703 Exploit Issue Tracking Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00015.html Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A6AJFIYIHS3TYDD2EBYBJ5KKE52X34BJ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YEWTIRMC2MFQBZ2O5M4CJHJM4JPBHLXH/
https://security.gentoo.org/glsa/202210-04 Third Party Advisory
https://www.debian.org/security/2021/dsa-5019 Third Party Advisory
https://www.wireshark.org/security/wnpa-sec-2021-14.html Vendor Advisory
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39921.json Third Party Advisory
https://gitlab.com/wireshark/wireshark/-/issues/17703 Exploit Issue Tracking Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00015.html Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A6AJFIYIHS3TYDD2EBYBJ5KKE52X34BJ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YEWTIRMC2MFQBZ2O5M4CJHJM4JPBHLXH/
https://security.gentoo.org/glsa/202210-04 Third Party Advisory
https://www.debian.org/security/2021/dsa-5019 Third Party Advisory
https://www.wireshark.org/security/wnpa-sec-2021-14.html Vendor Advisory
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*

Configuration 3 (hide)

cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
History

21 Nov 2024, 06:20

Type Values Removed Values Added
References () https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39921.json - Third Party Advisory () https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39921.json - Third Party Advisory
References () https://gitlab.com/wireshark/wireshark/-/issues/17703 - Exploit, Issue Tracking, Patch, Third Party Advisory () https://gitlab.com/wireshark/wireshark/-/issues/17703 - Exploit, Issue Tracking, Patch, Third Party Advisory
References () https://lists.debian.org/debian-lts-announce/2021/12/msg00015.html - Mailing List, Third Party Advisory () https://lists.debian.org/debian-lts-announce/2021/12/msg00015.html - Mailing List, Third Party Advisory
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A6AJFIYIHS3TYDD2EBYBJ5KKE52X34BJ/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A6AJFIYIHS3TYDD2EBYBJ5KKE52X34BJ/ -
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YEWTIRMC2MFQBZ2O5M4CJHJM4JPBHLXH/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YEWTIRMC2MFQBZ2O5M4CJHJM4JPBHLXH/ -
References () https://security.gentoo.org/glsa/202210-04 - Third Party Advisory () https://security.gentoo.org/glsa/202210-04 - Third Party Advisory
References () https://www.debian.org/security/2021/dsa-5019 - Third Party Advisory () https://www.debian.org/security/2021/dsa-5019 - Third Party Advisory
References () https://www.wireshark.org/security/wnpa-sec-2021-14.html - Vendor Advisory () https://www.wireshark.org/security/wnpa-sec-2021-14.html - Vendor Advisory

07 Nov 2023, 03:37

Type Values Removed Values Added
References
  • {'url': 'https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A6AJFIYIHS3TYDD2EBYBJ5KKE52X34BJ/', 'name': 'FEDORA-2021-3747cf6107', 'tags': ['Mailing List', 'Third Party Advisory'], 'refsource': 'FEDORA'}
  • {'url': 'https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YEWTIRMC2MFQBZ2O5M4CJHJM4JPBHLXH/', 'name': 'FEDORA-2021-97bd631e0a', 'tags': ['Mailing List', 'Third Party Advisory'], 'refsource': 'FEDORA'}
  • () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YEWTIRMC2MFQBZ2O5M4CJHJM4JPBHLXH/ -
  • () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A6AJFIYIHS3TYDD2EBYBJ5KKE52X34BJ/ -
Information

Published : 2021-11-19 17:15

Updated : 2024-11-21 06:20

NVD link : CVE-2021-39921

Mitre link : CVE-2021-39921

CVE.ORG link : CVE-2021-39921

JSON object : View

Products Affected

wireshark

  • wireshark

debian

  • debian_linux

fedoraproject

  • fedora
CWE
CWE-476

NULL Pointer Dereference