CVE-2023-23456

MediumCVSS 5.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-787

Affected software

Vendor	Product	Versions
—	—	—

References

https://bugzilla.redhat.com/show_bug.cgi?id=2160381Issue Tracking, Third Party Advisory
https://github.com/upx/upx/commit/510505a85cbe45e51fbd470f1aa8b02157c429d4Patch, Third Party Advisory
https://github.com/upx/upx/issues/632Exploit, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EL3BVKIGG3SH6I3KPOYQAWCBD4UMPOPI/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TGEP3FBNRZXGLIA2B2ICMB32JVMPREFZ/
https://bugzilla.redhat.com/show_bug.cgi?id=2160381Issue Tracking, Third Party Advisory
https://github.com/upx/upx/commit/510505a85cbe45e51fbd470f1aa8b02157c429d4Patch, Third Party Advisory
https://github.com/upx/upx/issues/632Exploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/12/msg00013.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EL3BVKIGG3SH6I3KPOYQAWCBD4UMPOPI/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TGEP3FBNRZXGLIA2B2ICMB32JVMPREFZ/

Timeline

Published: Jan 12, 2023
Last modified: Jun 17, 2026
NVD status: Modified

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