CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.8	$0-$5k	0.00

A vulnerability classified as problematic was found in Squid Proxy up to 2.5 (Firewall Software). Affected by this vulnerability is the function htcpHandleTstRequest of the file htcp.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. The summary by CVE is:

The htcpHandleTstRequest function in htcp.c in Squid 2.x before 2.6.STABLE24 and 2.7 before 2.7.STABLE8, and htcp.cc in 3.0 before 3.0.STABLE24, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via crafted packets to the HTCP port.

The weakness was shared 02/12/2010 (Website). It is possible to read the advisory at squid-cache.org. This vulnerability is known as CVE-2010-0639 since 02/15/2010. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 75745 (openSUSE Security Update : squid (openSUSE-SU-2012:0102-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks.

Upgrading to version 2.6 eliminates this vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 11516.

The vulnerability is also documented in the vulnerability database at Tenable (75745).

Productinfo

Type

• Firewall Software

Vendor

• Squid

Name

• Proxy

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 75745
Nessus Name: openSUSE Security Update : squid (openSUSE-SU-2012:0102-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 66847
OpenVAS Name: FreeBSD Ports: squid
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Proxy 2.6
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

02/12/2010 🔍
02/12/2010 +0 days 🔍
02/12/2010 +0 days 🔍
02/12/2010 +0 days 🔍
02/12/2010 +0 days 🔍
02/15/2010 +2 days 🔍
02/15/2010 +0 days 🔍
02/22/2010 +7 days 🔍
03/01/2010 +7 days 🔍
06/13/2014 +1565 days 🔍
03/18/2015 +278 days 🔍
09/02/2021 +2360 days 🔍

Sourcesinfo

Vendor: squid-cache.org

Advisory: squid-cache.org
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2010-0639 (🔍)
OVAL: 🔍

SecurityTracker: 1023587 - Squid HTCP Packet Processing NULL Pointer Dereference Lets Remote Users Deny Service
Vulnerability Center: 24897 - Squid \x3C 3.0.STABLE24 htcpHandleTstRequest Function Remote DoS Vulnerability, Medium
SecurityFocus: 38212 - Squid Web Proxy Cache HTCP Request Processing Remote Denial of Service Vulnerability
Secunia: 38812 - Fedora update for squid, Less Critical
OSVDB: 62297 - Squid htcp.cc htcpHandleTstRequest Function Crafted HTCP Request NULL Dereference DoS
Vupen: ADV-2010-0371

Entryinfo

Created: 03/18/2015 15:15
Updated: 09/02/2021 10:11
Changes: 03/18/2015 15:15 (71), 02/21/2017 17:12 (20), 09/02/2021 10:11 (3)
Complete: 🔍

Discussion

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