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CVE-2016-3947

8.2 · HIGH

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 (perform…

Published Apr 7, 2016CWE-119EPSS 14.62%

Overview

CVE-2016-3947 is a high-severity vulnerability. It was published on April 7, 2016 and has a CVSS 3.0 base score of 8.2 (HIGH).

This vulnerability has a CVSS 3.0 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Reflists.opensuse.org/opensuse-security-announce/2016-08/msg00010.htmlReflists.opensuse.org/opensuse-security-announce/2016-08/msg00040.htmlReflists.opensuse.org/opensuse-updates/2016-08/msg00069.htmlRefwww.securitytracker.com/id/1035457Refwww.squid-cache.org/Advisories/SQUID-2016_3.txtRefwww.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10495.patchRefwww.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11839.patchRefwww.squid-cache.org/Versions/v3/3.3/changesets/squid-3.3-12694.patchRefwww.squid-cache.org/Versions/v3/3.4/changesets/squid-3.4-13232.patchRefwww.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-14015.patch

How CyberStrike helps

Frequently asked questions

What is CVE-2016-3947?

CVE-2016-3947 is a high-severity vulnerability. It was published on April 7, 2016 and has a CVSS 3.0 base score of 8.2 (HIGH).

How severe is CVE-2016-3947?

This vulnerability has a CVSS 3.0 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2016-3947?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2016-3947?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-3947 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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