Squid Proxy up to 4.0.6 HTTP Status Code http.cc input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Squid Proxy up to 4.0.6. This affects an unknown function of the file http.cc of the component HTTP Status Code Handler. Performing a manipulation results in input validation. This vulnerability is identified as CVE-2016-2572. The attack can be initiated remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Squid Proxy up to 4.0.6 (Firewall Software). This affects some unknown functionality of the file http.cc of the component HTTP Status Code Handler. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. The summary by CVE is:

http.cc in Squid 4.x before 4.0.7 relies on the HTTP status code after a response-parsing failure, which allows remote HTTP servers to cause a denial of service (assertion failure and daemon exit) via a malformed response.

The weakness was released 02/27/2016 (Website). It is possible to read the advisory at openwall.com. This vulnerability is uniquely identified as CVE-2016-2572 since 02/25/2016. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 95346 (CentOS 7 : squid (CESA-2016:2600)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context l. 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 4.0.7 eliminates this vulnerability. A possible mitigation has been published 10 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (95346). Entries connected to this vulnerability are available at VDB-4435, VDB-7183, VDB-9526 and VDB-67519. Be aware that VulDB is the high quality source for vulnerability data.

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: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
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: 95346
Nessus Name: CentOS 7 : squid (CESA-2016:2600)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 103320
OpenVAS Name: Squid http.cc Denial of Service Vulnerability (Windows)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Upgrade: Proxy 4.0.7

Timelineinfo

02/25/2016 🔍
02/26/2016 +1 days 🔍
02/27/2016 +0 days 🔍
02/28/2016 +1 days 🔍
11/24/2016 +270 days 🔍
11/27/2016 +3 days 🔍
07/08/2022 +2048 days 🔍

Sourcesinfo

Vendor: squid-cache.org

Advisory: RHSA-2016:2600
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-2572 (🔍)
GCVE (CVE): GCVE-0-2016-2572
GCVE (VulDB): GCVE-100-81111
SecurityTracker: 1035101

See also: 🔍

Entryinfo

Created: 02/28/2016 21:36
Updated: 07/08/2022 16:04
Changes: 02/28/2016 21:36 (49), 08/16/2018 07:31 (28), 07/08/2022 16:04 (5)
Complete: 🔍
Cache ID: 216:659:103

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