ClamAV 0.90.1 libclamav cab_unstore memory corruption

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.
6.4$0-$5k0.00

A vulnerability was found in ClamAV 0.90.1 (Anti-Malware Software). It has been rated as critical. Affected by this issue is the function cab_unstore in the library libclamav. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The chm_decompress_stream function in libclamav/chmunpack.c in Clam AntiVirus (ClamAV) before 0.90.2 leaks file descriptors, which has unknown impact and attack vectors involving a crafted CHM file, a different vulnerability than CVE-2007-0897. NOTE: some of these details are obtained from third party information.

The weakness was shared 04/13/2007 with iDefense (Website). The advisory is available at labs.idefense.com. This vulnerability is handled as CVE-2007-1745 since 03/29/2007. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

It is declared as proof-of-concept. As 0-day the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 25109 (GLSA-200704-21 : ClamAV: Multiple vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165080 (OpenSUSE Security Update for ClamAV (SUSE-SA:2007:026)).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at clamav.net. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 5398.

The vulnerability is also documented in the databases at X-Force (33636), Tenable (25109), SecurityFocus (BID 23473†), OSVDB (34913†) and Secunia (SA25189†). The entry VDB-36177 is related to this item.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

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

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.4

VulDB Base Score: 7.3
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Dayunlockunlockunlockunlock
Todayunlockunlockunlockunlock

Nessus ID: 25109
Nessus Name: GLSA-200704-21 : ClamAV: Multiple vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 58333
OpenVAS Name: Debian Security Advisory DSA 1281-1 (clamav)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: clamav.net
TippingPoint: 🔍

Timelineinfo

03/29/2007 🔍
04/13/2007 +15 days 🔍
04/13/2007 +0 days 🔍
04/16/2007 +3 days 🔍
04/16/2007 +0 days 🔍
04/18/2007 +2 days 🔍
04/25/2007 +7 days 🔍
04/30/2007 +5 days 🔍
05/06/2007 +6 days 🔍
05/09/2007 +3 days 🔍
05/26/2007 +16 days 🔍
03/15/2021 +5042 days 🔍

Sourcesinfo

Advisory: labs.idefense.com⛔
Organization: iDefense
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2007-1745 (🔍)
OVAL: 🔍

X-Force: 33636 - Clam AntiVirus chm_decompress_stream() denial of service, Medium Risk
SecurityFocus: 23473 - ClamAV Multiple Remote Vulnerabilities
Secunia: 25189 - Mandriva update for clamav, Highly Critical
OSVDB: 34913 - Clam AntiVirus libclamav/chmunpack.c chm_decompress_stream Function File Descriptor Leak
Vulnerability Center: 14994 - Clam AntiVirus before 0.90.2 chm_decompress_stream Function File Descriptors Leakage, High
Vupen: ADV-2007-1378

See also: 🔍

Entryinfo

Created: 04/18/2007 12:54 PM
Updated: 03/15/2021 11:39 AM
Changes: 04/18/2007 12:54 PM (89), 05/10/2019 06:18 PM (10), 03/15/2021 11:39 AM (2)
Complete: 🔍
Cache ID: 18:225:40

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!