PT-2022-8870 · Upx+2 · Upx+2

Giantbranch · Published 2020-10-02 · Updated 2022-10-25 · CVE-2020-27796

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 invert pt dynamic function in p lx elf.cpp via a crafted Mach-O file.

Recommendations For UPX version 4.0.0, as a temporary workaround, consider disabling the invert pt dynamic function until a patch is available. 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-2020-27796

Affected Products

Alt Linux

Debian

Upx

References · 10

• 🔥 https://github.com/upx/upx/issues/392 · Exploit
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-27796 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2020-27796 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-27796 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-27796 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-27796 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-27796 · Security Note
• https://osv.dev/vulnerability/CVE-2020-27796 · Vendor Advisory
• https://github.com/upx/upx/commit/7d093174597483053e95f07d9f4614024c09890e · Note
• https://t.me/cibsecurity/48831 · Telegram Post