PT-2019-16056 · Upx+2 · Upx+2

Gutiniaoo · Published 2019-12-27 · Updated 2025-04-11 · CVE-2019-20021

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions UPX version 3.95

Description A heap-based buffer over-read issue was found in the canUnpack function in p mach.cpp via a crafted Mach-O file.

Recommendations For UPX version 3.95, consider updating to a newer version that contains a fix for this issue, as using a crafted Mach-O file could trigger the heap-based buffer over-read in the canUnpack function in p mach.cpp. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

ALT-PU-2020-2910

ALT-PU-2020-2930

CVE-2019-20021

MGASA-2020-0096

OPENSUSE-SU-2020:0163-1

OPENSUSE-SU-2020:0180-1

OPENSUSE-SU-2020_0163-1

OPENSUSE-SU-2024:11486-1

Affected Products

Alt Linux

Suse

Upx

References · 38

• 🔥 https://github.com/upx/upx/issues/315 · Exploit
• http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00007.html · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-20021 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:11486-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-20021 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D7XU42G6MUQQXHWRP7DCF2JSIBOJ5GOO · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2020:0163-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2019-20021 · Security Note
• https://advisories.mageia.org/MGASA-2020-0096.html · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2019-20021 · Security Note
• https://lists.fedoraproject.org/archives/list/[e-mail]/thread/D7XU42G6MUQQXHWRP7DCF2JSIBOJ5GOO · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-20021 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2020:0180-1 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2020-0096 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-20021 · Vendor Advisory