CVE-2011-4096

Summary

CVECVE-2011-4096
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2011-11-17 19:55:01 UTC
Updated2026-04-29 01:13:23 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v2.0 5 from [email protected]

AV:N/AC:L/Au:N/C:N/I:N/A:P

Problem Types: CWE-399 | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial

AV:N/AC:L/Au:N/C:N/I:N/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Squid-cache Squid 3.0 All All All
Application Squid-cache Squid 3.0 All pre1 All
Application Squid-cache Squid 3.0 All pre2 All
Application Squid-cache Squid 3.0 All pre3 All
Application Squid-cache Squid 3.0 All pre4 All
Application Squid-cache Squid 3.0 All pre5 All
Application Squid-cache Squid 3.0 All pre6 All
Application Squid-cache Squid 3.0 All pre7 All
Application Squid-cache Squid 3.0 All stable1 All
Application Squid-cache Squid 3.0 All stable10 All
Application Squid-cache Squid 3.0 All stable11 All
Application Squid-cache Squid 3.0 All stable12 All
Application Squid-cache Squid 3.0 All stable13 All
Application Squid-cache Squid 3.0 All stable14 All
Application Squid-cache Squid 3.0 All stable15 All
Application Squid-cache Squid 3.0 All stable2 All
Application Squid-cache Squid 3.0 All stable3 All
Application Squid-cache Squid 3.0 All stable4 All
Application Squid-cache Squid 3.0 All stable5 All
Application Squid-cache Squid 3.0 All stable6 All
Application Squid-cache Squid 3.0 All stable7 All
Application Squid-cache Squid 3.0 All stable8 All
Application Squid-cache Squid 3.0 All stable9 All
Application Squid-cache Squid 3.0 rc1 stable11 All
Application Squid-cache Squid 3.0 rc4 All All
Application Squid-cache Squid 3.0.stable1 All All All
Application Squid-cache Squid 3.0.stable10 All All All
Application Squid-cache Squid 3.0.stable11 All All All
Application Squid-cache Squid 3.0.stable11 rc1 All All
Application Squid-cache Squid 3.0.stable12 All All All
Application Squid-cache Squid 3.0.stable13 All All All
Application Squid-cache Squid 3.0.stable14 All All All
Application Squid-cache Squid 3.0.stable15 All All All
Application Squid-cache Squid 3.0.stable16 All All All
Application Squid-cache Squid 3.0.stable16 rc1 All All
Application Squid-cache Squid 3.0.stable17 All All All
Application Squid-cache Squid 3.0.stable18 All All All
Application Squid-cache Squid 3.0.stable19 All All All
Application Squid-cache Squid 3.0.stable2 All All All
Application Squid-cache Squid 3.0.stable20 All All All
Application Squid-cache Squid 3.0.stable21 All All All
Application Squid-cache Squid 3.0.stable22 All All All
Application Squid-cache Squid 3.0.stable23 All All All
Application Squid-cache Squid 3.0.stable24 All All All
Application Squid-cache Squid 3.0.stable25 All All All
Application Squid-cache Squid 3.0.stable3 All All All
Application Squid-cache Squid 3.0.stable4 All All All
Application Squid-cache Squid 3.0.stable5 All All All
Application Squid-cache Squid 3.0.stable6 All All All
Application Squid-cache Squid 3.0.stable7 All All All
Application Squid-cache Squid 3.0.stable8 All All All
Application Squid-cache Squid 3.0.stable9 All All All
Application Squid-cache Squid 3.1 All All All
Application Squid-cache Squid 3.1.0.1 All All All
Application Squid-cache Squid 3.1.0.10 All All All
Application Squid-cache Squid 3.1.0.11 All All All
Application Squid-cache Squid 3.1.0.12 All All All
Application Squid-cache Squid 3.1.0.13 All All All
Application Squid-cache Squid 3.1.0.14 All All All
Application Squid-cache Squid 3.1.0.15 All All All
Application Squid-cache Squid 3.1.0.16 All All All
Application Squid-cache Squid 3.1.0.17 All All All
Application Squid-cache Squid 3.1.0.18 All All All
Application Squid-cache Squid 3.1.0.2 All All All
Application Squid-cache Squid 3.1.0.3 All All All
Application Squid-cache Squid 3.1.0.4 All All All
Application Squid-cache Squid 3.1.0.5 All All All
Application Squid-cache Squid 3.1.0.6 All All All
Application Squid-cache Squid 3.1.0.7 All All All
Application Squid-cache Squid 3.1.0.8 All All All
Application Squid-cache Squid 3.1.0.9 All All All
Application Squid-cache Squid 3.1.1 All All All
Application Squid-cache Squid 3.1.10 All All All
Application Squid-cache Squid 3.1.11 All All All
Application Squid-cache Squid 3.1.12 All All All
Application Squid-cache Squid 3.1.13 All All All
Application Squid-cache Squid 3.1.14 All All All
Application Squid-cache Squid 3.1.2 All All All
Application Squid-cache Squid 3.1.3 All All All
Application Squid-cache Squid 3.1.4 All All All
Application Squid-cache Squid 3.1.5 All All All
Application Squid-cache Squid 3.1.5.1 All All All
Application Squid-cache Squid 3.1.6 All All All
Application Squid-cache Squid 3.1.7 All All All
Application Squid-cache Squid 3.1.8 All All All
Application Squid-cache Squid 3.1.9 All All All
Application Squid-cache Squid All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Security Alerts - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com
Squid 3.1.16 changes af854a3a-2127-422b-91ae-364da2661108 www.squid-cache.org
Support af854a3a-2127-422b-91ae-364da2661108 www.redhat.com
Bug 3237 – seq fault in free() from rfc1035RRDestroy at rfc1035.c:488 af854a3a-2127-422b-91ae-364da2661108 bugs.squid-cache.org
Support / Security / Advisories / / MDVSA-2011:193 | Mandriva af854a3a-2127-422b-91ae-364da2661108 www.mandriva.com
oss-security - CVE Request -- Squid v3.1.16 -- Invalid free by processing CNAME DNS record pointing to another CNAME record pointing to an empty A-record af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
About Secunia Research | Flexera af854a3a-2127-422b-91ae-364da2661108 secunia.com Vendor Advisory
[security-announce] SUSE-SU-2016:1996-1: important: Security update for af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org
oss-security - Re: CVE Request -- Squid v3.1.16 -- Invalid free by processing CNAME DNS record pointing to another CNAME record pointing to an empty A-record af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
[security-announce] SUSE-SU-2016:2089-1: important: Security update for af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org
Squid Resource Record Memory Free Error Lets Remote Users Deny Service - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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