CVE-2021-30501

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-30501
An assertion abort was found in upx MemBuffer::alloc() in mem.cpp, in version UPX 4.0.0. The flow allows attackers to cause a denial of service (abort) via a crafted 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
https://bugzilla.redhat.com/show_bug.cgi?id=1948696 Issue Tracking Patch Third Party Advisory
https://github.com/upx/upx/commit/28e761cd42211dfe0124b7a29b2f74730f453e46 Patch Third Party Advisory
https://github.com/upx/upx/issues/486 Exploit Issue Tracking Third Party Advisory
https://github.com/upx/upx/pull/487 Exploit Patch Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1948696 Issue Tracking Patch Third Party Advisory
https://github.com/upx/upx/commit/28e761cd42211dfe0124b7a29b2f74730f453e46 Patch Third Party Advisory
https://github.com/upx/upx/issues/486 Exploit Issue Tracking Third Party Advisory
https://github.com/upx/upx/pull/487 Exploit Patch Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:upx:upx:4.0.0:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*

Configuration 3 (hide)

cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
History

11 Apr 2025, 12:27

Type Values Removed Values Added
First Time Upx upx
Upx
CPE cpe:2.3:a:upx_project:upx:4.0.0:*:*:*:*:*:*:* cpe:2.3:a:upx:upx:4.0.0:*:*:*:*:*:*:*

21 Nov 2024, 06:04

Type Values Removed Values Added
References () https://bugzilla.redhat.com/show_bug.cgi?id=1948696 - Issue Tracking, Patch, Third Party Advisory () https://bugzilla.redhat.com/show_bug.cgi?id=1948696 - Issue Tracking, Patch, Third Party Advisory
References () https://github.com/upx/upx/commit/28e761cd42211dfe0124b7a29b2f74730f453e46 - Patch, Third Party Advisory () https://github.com/upx/upx/commit/28e761cd42211dfe0124b7a29b2f74730f453e46 - Patch, Third Party Advisory
References () https://github.com/upx/upx/issues/486 - Exploit, Issue Tracking, Third Party Advisory () https://github.com/upx/upx/issues/486 - Exploit, Issue Tracking, Third Party Advisory
References () https://github.com/upx/upx/pull/487 - Exploit, Patch, Third Party Advisory () https://github.com/upx/upx/pull/487 - Exploit, Patch, Third Party Advisory

25 Oct 2022, 19:23

Type Values Removed Values Added
CWE CWE-20 CWE-617

08 Jun 2021, 01:59

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : 4.3
v3 : 5.5
CPE cpe:2.3:a:upx_project:upx:4.0.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
References (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=1948696 - (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=1948696 - Issue Tracking, Patch, Third Party Advisory
References (MISC) https://github.com/upx/upx/issues/486 - (MISC) https://github.com/upx/upx/issues/486 - Exploit, Issue Tracking, Third Party Advisory
References (MISC) https://github.com/upx/upx/pull/487 - (MISC) https://github.com/upx/upx/pull/487 - Exploit, Patch, Third Party Advisory
References (MISC) https://github.com/upx/upx/commit/28e761cd42211dfe0124b7a29b2f74730f453e46 - (MISC) https://github.com/upx/upx/commit/28e761cd42211dfe0124b7a29b2f74730f453e46 - Patch, Third Party Advisory

27 May 2021, 02:11

Type Values Removed Values Added
CWE CWE-20

27 May 2021, 00:15

Type Values Removed Values Added
New CVE
Information

Published : 2021-05-27 00:15

Updated : 2025-04-11 12:27

NVD link : CVE-2021-30501

Mitre link : CVE-2021-30501

CVE.ORG link : CVE-2021-30501

JSON object : View

Products Affected

upx

  • upx

fedoraproject

  • fedora

redhat

  • enterprise_linux
CWE
CWE-20

Improper Input Validation

CWE-617

Reachable Assertion