Main Vulnerability Database Vulnerabilities #VU23825

Untrusted pointer dereference in UPX - CVE-2019-20053

Published: December 28, 2019 / Updated: January 29, 2020

Vulnerability identifier: #VU23825

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2019-20053

CWE-ID: CWE-822

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to invalid memory address dereference within the canUnpack() function in p_mach.cpp. A remote attacker can pass a specially crafted Mach-O file to the application and perform a denial of service attack.

Affected software

UPX
upx (Alpine package)
SUSE Linux

How to mitigate CVE-2019-20053

Install update from vendor's website.

UPX - update to 3.96

External References

https://github.com/upx/upx/issues/314

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