CVE-2010-2951

Description

dns_internal.cc in Squid 3.1.6, when IPv6 DNS resolution is not enabled, accesses an invalid socket during an IPv4 TCP DNS query, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) via vectors that trigger an IPv4 DNS response with the TC bit set.

5.0

CVSS

Severity: Medium

CVSS 2.0 •

EPSS 52.56% Top 5%

Vendor Advisory marc.info

Affected: n/a n/a

References

Link	Tags
http://www.openwall.com/lists/oss-security/2010/08/25/6	mailing list
http://www.openwall.com/lists/oss-security/2010/08/24/7	mailing list
http://bugs.squid-cache.org/show_bug.cgi?id=3009
http://marc.info/?l=squid-users&m=128263555724981&w=2	mailing list patch vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=626927
http://bugs.squid-cache.org/show_bug.cgi?id=3021
http://bazaar.launchpad.net/~squid/squid/3.1/revision/10072	patch
http://bugs.gentoo.org/show_bug.cgi?id=334263
http://www.openwall.com/lists/oss-security/2010/08/24/6	mailing list
http://www.openwall.com/lists/oss-security/2010/08/25/2	mailing list patch
http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10072.patch	patch

Frequently Asked Questions

What is the severity of CVE-2010-2951?: CVE-2010-2951 has been scored as a medium severity vulnerability.
How to fix CVE-2010-2951?: To fix CVE-2010-2951, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2010-2951 being actively exploited in the wild?: It is possible that CVE-2010-2951 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~53% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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