PT-2022-8873 · Upx+2 · Upx+2

Giantbranch · Published 2020-10-02 · Updated 2022-08-27 · CVE-2020-27799

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions UPX version 4.0.0

Description A heap-based buffer over-read issue was discovered in the acc ua get be32 function, located in the miniacc.h file, which can be exploited via a crafted Mach-O file.

Recommendations For UPX version 4.0.0, at the moment, there is no information about a newer version that contains a fix for this issue.

Exploit

Fix

Out of bounds Read

Buffer Overflow

Weakness Enumeration

CWE-125

CWE-119

Related Identifiers

ALT-PU-2020-2930

CVE-2020-27799

Affected Products

Alt Linux

Debian

Upx

References · 9

• 🔥 https://github.com/upx/upx/issues/391 · Exploit
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-27799 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-27799 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-27799 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-27799 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-27799 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-27799 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2020-27799 · Vendor Advisory
• https://github.com/upx/upx/commit/8764fdc24c31c21dc43b2a2f99eb8c48a34e5e9c · Note