CVE-2011-4096

Home/CVE/The idnsGrokReply function in Squid before 3.1.16 does not properly free memory, which allows remote attackers to cause

CVE

The idnsGrokReply function in Squid before 3.1.16 does not properly free memory, which allows remote attackers to cause

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.

MEDIUM · CVSS 5 EPSS 0.6249

Act now

EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
EPSS percentile: top 2% of all CVEs by exploitation likelihood

Sigma rules0 YARA rules0

▤

Affected Products & Versions

squid-cache squid<= 3.1.15

squid-cache squidall versions

▣

Scoring & Timeline

MEDIUM · CVSS v2 (legacy) · secalert@redhat.com

View on NVD

This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.

v2 Vector

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

Published to NVD17 Nov 2011 · 07:55 PM

⚑

Vendor Advisories

suse-csafSUSE-SU-2016:2089-1

rhsaRHSA-2011:1791Moderate

🔗

References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

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/46609Vendor Advisory

http://secunia.com/advisories/47459

http://www.mandriva.com/security/advisories?name=MDVSA-2011:193

Show all 11 references

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

Intelligence Graph · click any node to traverse

CVETechnique ActorTool Family

drag to reposition · click any node to traverse · button top-right enlarges

External lookups - second-class, for what we don’t hold ourselves

NVD CVE.org CISA Vulners Exploit-DB GitHub PoC VulnCheck KEV GreyNoise

Vulnerabilities
CISA KEV catalog
CWE weaknesses
CAPEC attack patterns
Package vulnerabilities

Threat intelligence
Threat actors
Tools & malware
ATT&CK techniques
IOCs

Detection & defense
Sigma rules
YARA rules
Atomic Red Team tests
D3FEND countermeasures

Compliance
NIST 800-53
ISO 27001:2022
SOC 2 TSC
PCI-DSS v4.0
CIS Controls v8.1

About
All capabilities
Live statistics
Data sources
Privacy policy
Terms of service

threatengine.sh · Open-source threat intelligence platform · 100+ authoritative sources · Every fact traces to its origin