CVE-2016-3947: Buffer Overflow
First published: Thu Apr 07 2016(Updated: )
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 allows remote servers to cause a denial of service (performance degradation or transition failures) or write sensitive information to log files via an ICMPv6 packet.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Squid Web Proxy Cache | <=3.5.15 | |
| Squid Web Proxy Cache | =4.0.1 | |
| Squid Web Proxy Cache | =4.0.2 | |
| Squid Web Proxy Cache | =4.0.3 | |
| Squid Web Proxy Cache | =4.0.4 | |
| Squid Web Proxy Cache | =4.0.5 | |
| Squid Web Proxy Cache | =4.0.6 | |
| Squid Web Proxy Cache | =4.0.7 | |
| Ubuntu | =12.04 | |
| Ubuntu | =14.04 | |
| Ubuntu | =15.10 | |
| Ubuntu | =16.04 |
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Reference Links
- 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
Frequently Asked Questions
What is the severity of CVE-2016-3947?
CVE-2016-3947 is rated as a high severity vulnerability that can lead to denial of service and potential information leakage.
How do I fix CVE-2016-3947?
To fix CVE-2016-3947, upgrade to Squid version 3.5.16 or later, or 4.0.8 or later.
What versions of Squid are affected by CVE-2016-3947?
CVE-2016-3947 affects Squid versions prior to 3.5.16 and 4.x prior to 4.0.8.
Can CVE-2016-3947 be exploited remotely?
Yes, CVE-2016-3947 can be exploited remotely through crafted ICMPv6 packets.
What impact does CVE-2016-3947 have on system performance?
Exploitation of CVE-2016-3947 can cause performance degradation and transition failures in affected systems.
- agent/references
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/remedy
- agent/author
- agent/severity
- agent/first-publish-date
- agent/event
- agent/description
- agent/source
- agent/weakness
- agent/tags
- agent/softwarecombine
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/squid-cache
- canonical/squid web proxy cache
- version/squid web proxy cache/3.5.15
- version/squid web proxy cache/4.0.1
- version/squid web proxy cache/4.0.2
- version/squid web proxy cache/4.0.3
- version/squid web proxy cache/4.0.4
- version/squid web proxy cache/4.0.5
- version/squid web proxy cache/4.0.6
- version/squid web proxy cache/4.0.7
- vendor/canonical
- canonical/ubuntu
- version/ubuntu/12.04
- version/ubuntu/14.04
- version/ubuntu/15.10
- version/ubuntu/16.04