CVE-2011-4096
Summary
| CVE | CVE-2011-4096 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2011-11-17 19:55:01 UTC |
| Updated | 2026-04-29 01:13:23 UTC |
| Description | 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. |
Risk And Classification
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
LowAuthentication
NoneConfidentiality
NoneIntegrity
NoneAvailability
PartialAV:N/AC:L/Au:N/C:N/I:N/A:P
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| 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
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| 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 |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.