Squid Proxy up to 3.5.5 CONNECT Method access control

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

Summaryinfo

A vulnerability labeled as critical has been found in Squid Proxy up to 3.5.5. This affects an unknown function of the component CONNECT Method Handler. Executing a manipulation can lead to access control. This vulnerability is registered as CVE-2015-5400. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical was found in Squid Proxy up to 3.5.5 (Firewall Software). This vulnerability affects an unknown part of the component CONNECT Method Handler. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Squid before 3.5.6 does not properly handle CONNECT method peer responses when configured with cache_peer, which allows remote attackers to bypass intended restrictions and gain access to a backend proxy via a CONNECT request.

The weakness was published 09/28/2015 with Squid (Website). The advisory is available at squid-cache.org. This vulnerability was named CVE-2015-5400 since 07/06/2015. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 85128 (Debian DLA-286-1 : squid3 security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169027 (SUSE Enterprise Linux Security Update for squid3 (SUSE-SU-2016:1996-1)).

Upgrading to version 3.5.6 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (85128) and SecurityFocus (BID 75553†). Similar entries are available at VDB-4435, VDB-7183, VDB-9526 and VDB-67519. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Version

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Website

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
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: 85128
Nessus Name: Debian DLA-286-1 : squid3 security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 703327
OpenVAS Name: Debian Security Advisory DSA 3327-1 (squid3 - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Proxy 3.5.6

Timelineinfo

07/06/2015 🔍
07/06/2015 +0 days 🔍
09/28/2015 +84 days 🔍
09/28/2015 +0 days 🔍
09/29/2015 +1 days 🔍
06/19/2022 +2455 days 🔍

Sourcesinfo

Vendor: squid-cache.org

Advisory: FEDORA-2016-7b40eb9e29
Organization: Squid
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-5400 (🔍)
GCVE (CVE): GCVE-0-2015-5400
GCVE (VulDB): GCVE-100-78130

OVAL: 🔍

SecurityFocus: 75553 - Squid Denial of Service and Security Bypass Vulnerabilities
SecurityTracker: 1032873

See also: 🔍

Entryinfo

Created: 09/29/2015 10:21
Updated: 06/19/2022 14:32
Changes: 09/29/2015 10:21 (60), 01/04/2018 08:45 (7), 06/19/2022 14:30 (4), 06/19/2022 14:32 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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