Heap-based buffer overflow in Squid - CVE-2016-3947
Published: April 7, 2016 / Updated: July 28, 2020
Vulnerability identifier: #VU32297
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2016-3947
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Squid-cache.org
Affected software:
Squid
Squid
Detailed vulnerability description
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 Icmp6::Recv function in icmp/Icmp6.cc in the pinger utility in Squid before 3.5.16 and 4.x before 4.0.8. A remote attacker can use an ICMPv6 packet. 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.
How to mitigate CVE-2016-3947
The vendor has issued the following versions to address this vulnerability: 3.5.16, 4.0.8.
Sources
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html
- http://www.securitytracker.com/id/1035457
- http://www.squid-cache.org/Advisories/SQUID-2016_3.txt
- http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10495.patch
- http://www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11839.patch
- http://www.squid-cache.org/Versions/v3/3.3/changesets/squid-3.3-12694.patch
- http://www.squid-cache.org/Versions/v3/3.4/changesets/squid-3.4-13232.patch
- http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-14015.patch
- http://www.ubuntu.com/usn/USN-2995-1
- https://security.gentoo.org/glsa/201607-01