CVE-2023-23456 — Out-of-bounds Write in UPX

CWE-787 — Out-of-bounds Write5 documents5 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 96.23%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
UPXDebian Upx-uclFedoraproject Fedora
Timeline
PublishedJan 12
Latest updateAug 19

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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages2 packages

▶NVDupx/upx< 2022-11-24
▶debiandebian/upx-ucl< upx-ucl 3.96-2+deb11u1 (bullseye)

Also affects: Fedora 36, 37

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

2
GHSA
GHSA-3j7g-922g-j6r3: A heap-based buffer overflow issue was discovered in UPX in PackTmt::pack() in p_tmt↗2023-01-12
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OSV
CVE-2023-23456: A heap-based buffer overflow issue was discovered in UPX in PackTmt::pack() in p_tmt↗2023-01-12
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📋Vendor Advisories

1
Debian
CVE-2023-23456: upx-ucl - A heap-based buffer overflow issue was discovered in UPX in PackTmt::pack() in p...↗2023
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📄Research Papers

1
arXiv
Top of the Heap: Efficient Memory Error Protection of Safe Heap Objects↗2024-08-19
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CVE-2023-23456 — Out-of-bounds Write in UPX | cvebase