CVE-2011-4096
MEDIUM · CVSS 5.0EPSS 37.2%EU EUVD
The idnsGrokReply function in Squid before 3.1.16 does not properly free memory, which allows remote attackers to cause a denial of service (daemon abort) via a DNS reply containing a CNAME record that references another CNAME record that contains an empty A record.
Key facts
- CVSS score
- 5.0 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P- Weakness (CWE)
- CWE-399
- EPSS score
- 37.2% (99th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2011-4047)
- Published
- November 17, 2011
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2011-4047 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.
View on the EU Vulnerability DatabaseAffected products
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
- squid-cache / squid
and 37 more…
References
- http://bugs.squid-cache.org/show_bug.cgi?id=3237#c12
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html
- http://secunia.com/advisories/46609(Vendor Advisory)
- http://secunia.com/advisories/47459
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:193
- http://www.openwall.com/lists/oss-security/2011/10/31/5
- http://www.openwall.com/lists/oss-security/2011/11/01/3
- http://www.redhat.com/support/errata/RHSA-2011-1791.html
- http://www.securitytracker.com/id?1026265
- http://www.squid-cache.org/Versions/v3/3.1/changesets/SQUID_3_1_16.html
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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