Squid Proxy up to 3.1.0.4 HttpMsg.c input validation

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Squid Proxy up to 3.1.0.4 and classified as problematic. The impacted element is an unknown function of the file HttpMsg.c. Executing a manipulation can lead to input validation. This vulnerability is tracked as CVE-2009-0478. Moreover, an exploit is present. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Squid Proxy up to 3.1.0.4 (Firewall Software) and classified as problematic. This vulnerability affects an unknown code of the file HttpMsg.c. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. CVE summarizes:

Squid 2.7 to 2.7.STABLE5, 3.0 to 3.0.STABLE12, and 3.1 to 3.1.0.4 allows remote attackers to cause a denial of service via an HTTP request with an invalid version number, which triggers a reachable assertion in (1) HttpMsg.c and (2) HttpStatusLine.c.

The bug was discovered 02/02/2009. The weakness was disclosed 02/08/2009 by Joshua Morin (Website). The advisory is shared for download at securityfocus.com. This vulnerability was named CVE-2009-0478 since 02/08/2009. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known.

A public exploit has been developed by Praveen Darshanam in Perl and been published 1 days after the advisory. It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 6 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 37418 (Mandriva Linux Security Advisory : squid (MDVSA-2009:034)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Mandriva Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 62063 (Squid HTTP Version Number Parsing Denial of Service Vulnerability).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 days after the disclosure of the vulnerability. Attack attempts may be identified with Snort ID 2570. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 8675.

The vulnerability is also documented in the databases at X-Force (48484), Exploit-DB (8021), Tenable (37418), SecurityFocus (BID 33604†) and OSVDB (51810†). Once again VulDB remains the best 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: 5.3
VulDB Meta Temp Score: 4.8

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

CVSSv2info

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Praveen Darshanam
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 37418
Nessus Name: Mandriva Linux Security Advisory : squid (MDVSA-2009:034)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 63499
OpenVAS Name: Debian Security Advisory DSA 1732-1 (squid3)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Exploit Delay Time: 🔍
Snort ID: 2570
Snort Message: SERVER-WEBAPP Invalid HTTP Version String
Snort Class: 🔍
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

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

Timelineinfo

02/02/2009 🔍
02/02/2009 +0 days 🔍
02/02/2009 +0 days 🔍
02/04/2009 +2 days 🔍
02/08/2009 +4 days 🔍
02/08/2009 +0 days 🔍
02/08/2009 +0 days 🔍
02/09/2009 +1 days 🔍
02/09/2009 +0 days 🔍
02/10/2009 +1 days 🔍
02/16/2009 +6 days 🔍
04/23/2009 +66 days 🔍
03/17/2015 +2154 days 🔍
05/15/2025 +3712 days 🔍

Sourcesinfo

Vendor: squid-cache.org

Advisory: securityfocus.com⛔
Researcher: Joshua Morin
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2009-0478 (🔍)
GCVE (CVE): GCVE-0-2009-0478
GCVE (VulDB): GCVE-100-46372

OVAL: 🔍

X-Force: 48484
SecurityFocus: 33604 - Squid Web Proxy Cache HTTP Version Number Parsing Denial of Service Vulnerability
Secunia: 33731
OSVDB: 51810 - CVE-2009-0478 - Squid - Denial of Service Issue
SecurityTracker: 1021684
Vulnerability Center: 20867 - Squid Web Proxy Cache Remote DoS Vulnerability via Invalid Version Number in HTTP Request, High

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/17/2015 16:11
Updated: 05/15/2025 14:09
Changes: 03/17/2015 16:11 (93), 08/27/2019 09:46 (12), 11/23/2024 22:18 (17), 05/15/2025 14:09 (4)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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