SB2020011724 - Fedora 30 update for upx
Published: January 17, 2020 Updated: April 25, 2025
Security Bulletin ID
SB2020011724
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2019-20021)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows an attacker to gain access to potentially sensitive information.
The vulnerability exists due to a heap-based buffer over-read within the canUnpack() function in p_mach.cpp. An attacker can create a specially crafted Mach-O file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.
Remediation
Install update from vendor's website.