NULL pointer dereference in Libxml2 - CVE-2023-42869
Published: April 11, 2023 / Updated: December 26, 2023
Vulnerability identifier: #VU74864
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-42869
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in xmlSchemaCheckCOSSTDerivedOK. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.
Affected software
Libxml2
Nokogiri
macOS
iPadOS
Apple iOS
Nokogiri
macOS
iPadOS
Apple iOS
How to mitigate CVE-2023-42869
Install updates from vendor's website.
Libxml2 - update to 2.10.4
Nokogiri - update to 1.14.3
macOS - update to 13.4 22F66
iPadOS - update to 16.5 20F66
Apple iOS - update to 16.5 20F66
Nokogiri - update to 1.14.3
macOS - update to 13.4 22F66
iPadOS - update to 16.5 20F66
Apple iOS - update to 16.5 20F66