Vulnerability Details : 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.
Vulnerability category: Input validationDenial of service
Products affected by CVE-2021-30501
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:a:upx_project:upx:4.0.0:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-30501
0.13%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 46 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-30501
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2021-30501
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: secalert@redhat.com (Secondary)
-
The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-30501
-
https://github.com/upx/upx/pull/487
try fix issue 486 by chibataiki · Pull Request #487 · upx/upx · GitHubExploit;Patch;Third Party Advisory
-
https://github.com/upx/upx/commit/28e761cd42211dfe0124b7a29b2f74730f453e46
Merge pull request #487 from chibataiki/devel · upx/upx@28e761c · GitHubPatch;Third Party Advisory
-
https://github.com/upx/upx/issues/486
MemBuffer assertions again in function MemBuffer::alloc() · Issue #486 · upx/upx · GitHubExploit;Issue Tracking;Third Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1948696
1948696 – (CVE-2021-30501) CVE-2021-30501 upx: Assertion abort in function MemBuffer::alloc()Issue Tracking;Patch;Third Party Advisory
Jump to