CVE-2010-2951
MEDIUM · CVSS 5.0EPSS 31.5%EU EUVD
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.
Key facts
- CVSS score
- 5.0 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P- EPSS score
- 31.5% (98th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2010-2955)
- Published
- October 12, 2010
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2010-2955 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- squid-cache / squid
References
- http://bazaar.launchpad.net/~squid/squid/3.1/revision/10072(Patch)
- http://bugs.gentoo.org/show_bug.cgi?id=334263
- http://bugs.squid-cache.org/show_bug.cgi?id=3009
- http://bugs.squid-cache.org/show_bug.cgi?id=3021
- http://marc.info/?l=squid-users&m=128263555724981&w=2(Patch, Vendor Advisory)
- http://www.openwall.com/lists/oss-security/2010/08/24/6
- http://www.openwall.com/lists/oss-security/2010/08/24/7
- http://www.openwall.com/lists/oss-security/2010/08/25/2(Patch)
- http://www.openwall.com/lists/oss-security/2010/08/25/6
- http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10072.patch(Patch)
- https://bugzilla.redhat.com/show_bug.cgi?id=626927
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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