Integer overflow in Libxml2 - CVE-2020-27920
Published: May 14, 2021
Vulnerability identifier: #VU53273
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-27920
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow when processing XML data in libxml2. A remote attacker can pass specially crafted data to the application, trigger integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Libxml2
macOS
macOS
How to mitigate CVE-2020-27920
Install update from vendor's website.
Libxml2 - update to 2.9.11
macOS - addressed in versions 10.14.6 18G7016, 10.15.7 19H114
macOS - addressed in versions 10.14.6 18G7016, 10.15.7 19H114