PT-2022-8875 · Upx+2 · Upx+2

Giantbranch · Published 2020-10-02 · Updated 2025-04-11 · CVE-2020-27801

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 was discovered in the get le64 function in bele.h 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 vulnerability.

Exploit

Out of bounds Read

Buffer Overflow

Weakness Enumeration

CWE-125

CWE-119

Related Identifiers

ALT-PU-2020-2930

CVE-2020-27801

Affected Products

Alt Linux

Debian

Upx

References · 11

• 🔥 https://github.com/upx/upx/issues/394 · Exploit
• https://security-tracker.debian.org/tracker/CVE-2020-27801 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-27801 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-27801 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-27801 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-27801 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-27801 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-27801 · Security Note
• https://github.com/upx/upx/commit/49edccd7165696dcc0bf79f50cae4011313ddd28 · Note
• https://t.me/cibsecurity/48828 · Telegram Post
• https://twitter.com/WolfgangSesin/status/1910724980670705940 · Twitter Post