CVE-2023-23456

Public Exploit
Upx: heap-buffer-overflow in packtmt::pack()

Description

A heap-based buffer overflow issue was discovered in UPX in PackTmt::pack() in p_tmt.cpp file. The flow allows an attacker to cause a denial of service (abort) via a crafted file.

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.01%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=2160381 issue tracking third party advisory
https://github.com/upx/upx/commit/510505a85cbe45e51fbd470f1aa8b02157c429d4 third party advisory patch
https://github.com/upx/upx/issues/632 third party advisory exploit
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EL3BVKIGG3SH6I3KPOYQAWCBD4UMPOPI/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TGEP3FBNRZXGLIA2B2ICMB32JVMPREFZ/ vendor advisory
https://lists.debian.org/debian-lts-announce/2024/12/msg00013.html

Frequently Asked Questions

What is the severity of CVE-2023-23456?
CVE-2023-23456 has been scored as a medium severity vulnerability.
How to fix CVE-2023-23456?
To fix CVE-2023-23456, 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-2023-23456 being actively exploited in the wild?
It is possible that CVE-2023-23456 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-2023-23456?
CVE-2023-23456 affects .
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