Squid proxy 2.5 Access Control List Remote Code Execution

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.4$0-$5k0.00

Summaryinfo

A vulnerability classified as very critical has been found in Squid proxy 2.5. Affected is an unknown function of the component Access Control List. This manipulation causes Remote Code Execution. This vulnerability is handled as CVE-2005-0194. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Squid proxy 2.5 (Firewall Software) and classified as very critical. Affected by this vulnerability is some unknown processing of the component Access Control List. The manipulation with an unknown input leads to a remote code execution vulnerability. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Squid 2.5, when processing the configuration file, parses empty Access Control Lists (ACLs), including proxy_auth ACLs without defined auth schemes, in a way that effectively removes arguments, which could allow remote attackers to bypass intended ACLs if the administrator ignores the parser warnings.

The bug was discovered 04/29/2005. The weakness was released 05/02/2005 as confirmed advisory (CERT.org). It is possible to read the advisory at kb.cert.org. This vulnerability is known as CVE-2005-0194 since 01/31/2005. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/29/2024).

The vulnerability scanner Nessus provides a plugin with the ID 19054 (FreeBSD : squid -- confusing results on empty acl declarations (a30e5e44-5440-11d9-9e1e-c296ac722cb3)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (20323), Tenable (19054), OSVDB (12633†) and Vulnerability Center (SBV-7213†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.4

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Remote Code Execution
CWE: Unknown
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: 19054
Nessus Name: FreeBSD : squid -- confusing results on empty acl declarations (a30e5e44-5440-11d9-9e1e-c296ac722cb3)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 53497
OpenVAS Name: Debian Security Advisory DSA 667-1 (postgresql)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/23/2004 🔍
01/01/2005 +9 days 🔍
01/31/2005 +30 days 🔍
03/03/2005 +31 days 🔍
04/29/2005 +57 days 🔍
05/02/2005 +3 days 🔍
05/02/2005 +0 days 🔍
07/13/2005 +72 days 🔍
03/10/2015 +3527 days 🔍
10/29/2024 +3521 days 🔍

Sourcesinfo

Vendor: squid-cache.org

Advisory: kb.cert.org
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2005-0194 (🔍)
GCVE (CVE): GCVE-0-2005-0194
GCVE (VulDB): GCVE-100-24331
CERT: 🔍
X-Force: 20323
OSVDB: 12633 - CVE-2005-0194 - National Science Foundation - Squid - Security Bypass Issue
Vulnerability Center: 7213 - Squid 2.5 Allows Intended ACLs Bypass, Critical

Entryinfo

Created: 03/10/2015 23:05
Updated: 10/29/2024 21:37
Changes: 03/10/2015 23:05 (64), 05/30/2019 14:21 (7), 10/29/2024 21:37 (17)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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