Out-of-bounds read in macOS - CVE-2016-1839

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Main Vulnerability Database Vulnerabilities #VU31950

Out-of-bounds read in macOS - CVE-2016-1839

Published: May 20, 2016 / Updated: July 27, 2020


Vulnerability identifier: #VU31950
CSH Severity: Medium
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2016-1839
CWE-ID: CWE-125
Exploitation vector: Local 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 boundary error in The xmlDictAddString function in libxml2 before 2.9.4, as used in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1,. A remote attacker can perform a denial of service (heap-based buffer over-read) via a crafted XML document.


Affected software

macOS
libxml2 (Alpine package)

How to mitigate CVE-2016-1839

Update to version 10.11.5.

macOS - update to 10.11.5
libxml2 (Alpine package) - update to 2.9.2-r2

External References

Related Security Bulletins