Back
CVE-2010-2951
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…
Medium5.0EPSS 31.5%
- Published
- Updated
- Reserved
- Assigned by
- redhat
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 31.5% · top 1.7% of all CVEs (6 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Weakness
- n/a
Affected products
n/a
- affected n/a
References (11)
- [oss-security] 20100825 Re: CVE Request -- Squid v3.1.6 -- DoS (crash) while processing large DNS replies with no IPv6 resolver present (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [oss-security] 20100825 Re: CVE Request -- Squid v3.1.6 -- DoS (crash) while processing large DNS replies with no IPv6 resolver present (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- http://bugs.squid-cache.org/show_bug.cgi?id=3009 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [squid-users] 20100824 Squid 3.1.7 is available (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=626927 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://bugs.squid-cache.org/show_bug.cgi?id=3021 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://bazaar.launchpad.net/~squid/squid/3.1/revision/10072 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://bugs.gentoo.org/show_bug.cgi?id=334263 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20100824 CVE Request -- Squid v3.1.6 -- DoS (crash) while processing large DNS replies with no IPv6 resolver present (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [oss-security] 20100825 Re: CVE Request -- Squid v3.1.6 -- DoS (crash) while processing large DNS replies with no IPv6 resolver present (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10072.patch (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2010-2951)Record last updated .