CVE catalog
CVE-2023-23456
DEBIAN-CVE-2023-23456
- Severity
- Unknown · CVSS 5.5
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.40% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | upx-ucl | 13 | 4.2.2-1 | fixed |
| Debian | upx-ucl | 14 | 4.2.2-1 | fixed |
| Debian | upx-ucl | 11 | 3.96-2 | vulnerable |
| Debian | upx-ucl | 11 | 3.96-2+deb11u1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | upx-ucl | deb | 13 | 4.2.2-1 | Not reported | DEBIAN-CVE-2023-23456 | Not reported |
| Debian | upx-ucl | deb | 14 | 4.2.2-1 | Not reported | DEBIAN-CVE-2023-23456 | Not reported |
| Debian | upx-ucl | deb | 11 | 3.96-2+deb11u1 | Not reported | DLA-3991-1 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2023_0088-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2023-23456]
- [https://osv.dev/vulnerability/DLA-3991-1]
- [https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-23456.json]
[FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]