Squid Proxy 3.x Gopher memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Squid Proxy 3.x. The impacted element is an unknown function of the component Gopher. Performing a manipulation results in memory corruption. This vulnerability is reported as CVE-2011-3205. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Squid Proxy 3.x (Firewall Software). It has been classified as critical. This affects an unknown code of the component Gopher. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflow in the gopherToHTML function in gopher.cc in the Gopher reply parser in Squid 3.0 before 3.0.STABLE26, 3.1 before 3.1.15, and 3.2 before 3.2.0.11 allows remote Gopher servers to cause a denial of service (memory corruption and daemon restart) or possibly have unspecified other impact via a long line in a response. NOTE: This issue exists because of a CVE-2005-0094 regression.

The weakness was disclosed 08/29/2011 by Ben Hawkes with Google Security Team (Website). It is possible to read the advisory at squid-cache.org. This vulnerability is uniquely identified as CVE-2011-3205 since 08/19/2011. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 68351 (Oracle Linux 6 : squid (ELSA-2011-1293)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169074 (SUSE Enterprise Linux Security Update for squid3 (SUSE-SU-2016:2089-1)).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at squid-cache.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (69660), Tenable (68351), SecurityFocus (BID 49356†), OSVDB (74847†) and Secunia (SA45805†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 68351
Nessus Name: Oracle Linux 6 : squid (ELSA-2011-1293)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 70241
OpenVAS Name: Debian Security Advisory DSA 2304-1 (squid3)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: squid-cache.org
McAfee IPS: 🔍
McAfee IPS Version: 🔍

PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

08/19/2011 🔍
08/29/2011 +10 days 🔍
08/29/2011 +0 days 🔍
08/29/2011 +0 days 🔍
09/06/2011 +8 days 🔍
09/06/2011 +0 days 🔍
09/11/2011 +5 days 🔍
09/12/2011 +1 days 🔍
09/16/2011 +4 days 🔍
07/12/2013 +665 days 🔍
03/19/2021 +2807 days 🔍

Sourcesinfo

Vendor: squid-cache.org

Advisory: squid-cache.org
Researcher: Ben Hawkes
Organization: Google Security Team
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2011-3205 (🔍)
GCVE (CVE): GCVE-0-2011-3205
GCVE (VulDB): GCVE-100-4407

OVAL: 🔍

X-Force: 69660
SecurityFocus: 49356 - Squid Proxy Gopher Remote Buffer Overflow Vulnerability
Secunia: 45805 - Squid Gopher Response Processing Buffer Overflow Vulnerability, Highly Critical
OSVDB: 74847
SecurityTracker: 1025981 - Squid Gopher Response Memory Corruption Error Lets Remote Users Deny Service
Vulnerability Center: 33176 - Squid before 3.2.0.11 Gopher Parser Remote Buffer Overflow Vulnerability Allows DoS Attacks, Medium

Entryinfo

Created: 09/16/2011 02:00
Updated: 03/19/2021 14:40
Changes: 09/16/2011 02:00 (91), 03/31/2017 12:11 (8), 03/19/2021 14:40 (3)
Complete: 🔍
Cache ID: 216::103

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