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.

Classification

CVE ID: CVE-2023-23456

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.13% (probability of being exploited)

EPSS Percentile: 48.12% (scored less or equal to compared to others)

EPSS Date: 2025-02-04 (when was this score calculated)

References

https://bugzilla.redhat.com/show_bug.cgi?id=2160381
https://github.com/upx/upx/commit/510505a85cbe45e51fbd470f1aa8b02157c429d4
https://github.com/upx/upx/issues/632
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