Heap-based buffer overflow in c-ares - CVE-2016-5180

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Main Vulnerability Database Vulnerabilities #VU32075

Heap-based buffer overflow in c-ares - CVE-2016-5180

Published: October 3, 2016 / Updated: July 28, 2020


Vulnerability identifier: #VU32075
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-2016-5180
CWE-ID: CWE-122
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 a boundary error in Heap-based buffer overflow in the ares_create_query function in c-ares 1.x before 1.12.0. A remote attacker can use a hostname with an escaped trailing dot. to trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Affected software

c-ares
Gentoo Linux
Arch Linux
Fedora
c-ares (Alpine package)
nodejs
c-ares
mingw-c-ares

How to mitigate CVE-2016-5180

Update to version 1.12.0.

c-ares - update to 1.12.0
c-ares (Alpine package) - update to 1.12.0-r0
nodejs - addressed in versions 0.10.48-1.fc23, 0.10.48-3.el6, 4.6.1-6.fc24
c-ares - addressed in versions 1.12.0-1.el5, 1.12.0-1.fc23, 1.12.0-1.fc24, 1.12.0-1.fc25
mingw-c-ares - addressed in versions 1.12.0-1.el7, 1.12.0-1.fc23, 1.12.0-1.fc24, 1.12.0-1.fc25

External References

Related Security Bulletins