CVE-2021-30501

Public Exploit

Description

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.

Categories

5.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.12%
Third-Party Advisory redhat.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com
Affected: n/a upx
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1948696 issue tracking third party advisory patch
https://github.com/upx/upx/issues/486 issue tracking exploit third party advisory
https://github.com/upx/upx/pull/487 exploit third party advisory patch
https://github.com/upx/upx/commit/28e761cd42211dfe0124b7a29b2f74730f453e46 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-30501?
CVE-2021-30501 has been scored as a medium severity vulnerability.
How to fix CVE-2021-30501?
To fix CVE-2021-30501, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-30501 being actively exploited in the wild?
It is possible that CVE-2021-30501 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-30501?
CVE-2021-30501 affects n/a upx.
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