CVE-2019-20021

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2019-20021
A heap-based buffer over-read was discovered in canUnpack in p_mach.cpp in UPX 3.95 via a crafted Mach-O file.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.3 /10

CVSS v2.0 : MEDIUM

V2 Legend

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

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References
Link Resource
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00003.html Broken Link
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00007.html Broken Link
https://github.com/upx/upx/issues/315 Exploit Issue Tracking Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D7XU42G6MUQQXHWRP7DCF2JSIBOJ5GOO/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUTVSTXAFTD552NO2K2RIF6MDQEHP3BE/
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00003.html Broken Link
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00007.html Broken Link
https://github.com/upx/upx/issues/315 Exploit Issue Tracking Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D7XU42G6MUQQXHWRP7DCF2JSIBOJ5GOO/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUTVSTXAFTD552NO2K2RIF6MDQEHP3BE/
Configurations

Configuration 1 (hide)

cpe:2.3:a:upx:upx:3.95:*:*:*:*:*:*:*

Configuration 2 (hide)

OR cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
History

11 Apr 2025, 12:27

Type Values Removed Values Added
CPE cpe:2.3:a:upx_project:upx:3.95:*:*:*:*:*:*:* cpe:2.3:a:upx:upx:3.95:*:*:*:*:*:*:*
First Time Upx upx
Upx

21 Nov 2024, 04:37

Type Values Removed Values Added
References () http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00003.html - Broken Link () http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00003.html - Broken Link
References () http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00007.html - Broken Link () http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00007.html - Broken Link
References () https://github.com/upx/upx/issues/315 - Exploit, Issue Tracking, Third Party Advisory () https://github.com/upx/upx/issues/315 - Exploit, Issue Tracking, Third Party Advisory
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D7XU42G6MUQQXHWRP7DCF2JSIBOJ5GOO/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D7XU42G6MUQQXHWRP7DCF2JSIBOJ5GOO/ -
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUTVSTXAFTD552NO2K2RIF6MDQEHP3BE/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUTVSTXAFTD552NO2K2RIF6MDQEHP3BE/ -

07 Nov 2023, 03:08

Type Values Removed Values Added
References
  • {'url': 'https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EUTVSTXAFTD552NO2K2RIF6MDQEHP3BE/', 'name': 'FEDORA-2020-67590fbf08', 'tags': ['Mailing List', 'Third Party Advisory'], 'refsource': 'FEDORA'}
  • {'url': 'https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/D7XU42G6MUQQXHWRP7DCF2JSIBOJ5GOO/', 'name': 'FEDORA-2020-20cf0743f5', 'tags': ['Mailing List', 'Third Party Advisory'], 'refsource': 'FEDORA'}
  • () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D7XU42G6MUQQXHWRP7DCF2JSIBOJ5GOO/ -
  • () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUTVSTXAFTD552NO2K2RIF6MDQEHP3BE/ -
Information

Published : 2019-12-27 02:15

Updated : 2025-04-11 12:27

NVD link : CVE-2019-20021

Mitre link : CVE-2019-20021

CVE.ORG link : CVE-2019-20021

JSON object : View

Products Affected

fedoraproject

  • fedora

upx

  • upx
CWE
CWE-125

Out-of-bounds Read