SourceFire ClamAV 0.97.7 libclamav/sis.c numeric error

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in SourceFire ClamAV 0.97.7. This issue affects some unknown processing in the library libclamav/sis.c. The manipulation leads to numeric error. This vulnerability is uniquely identified as CVE-2013-2020. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in SourceFire ClamAV 0.97.7 (Anti-Malware Software). This issue affects some unknown functionality in the library libclamav/sis.c. The manipulation with an unknown input leads to a numeric error vulnerability. Using CWE to declare the problem leads to CWE-189. Impacted is availability. The summary by CVE is:

Integer underflow in the cli_scanpe function in pe.c in ClamAV before 0.97.8 allows remote attackers to cause a denial of service (crash) via a skewed offset larger than the size of the PE section in a UPX packed executable, which triggers an out-of-bounds read.

The weakness was disclosed 04/23/2013 by Felix Groebert with Google Security Team as 53150 as not defined advisory (Secunia). It is possible to read the advisory at secunia.com. The identification of this vulnerability is CVE-2013-2020 since 02/19/2013. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 75004 (openSUSE Security Update : clamav (openSUSE-SU-2013:0881-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 121462 (ClamAV Multiple Vulnerabilities).

Upgrading to version 0.97.8 eliminates this vulnerability. The upgrade is hosted for download at freecode.com. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (75004), SecurityFocus (BID 59434†), OSVDB (92692†) and Secunia (SA53150†). The entries VDB-8564, VDB-8565 and VDB-68295 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Numeric error
CWE: CWE-189
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: 75004
Nessus Name: openSUSE Security Update : clamav (openSUSE-SU-2013:0881-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 866024
OpenVAS Name: Fedora Update for clamav FEDORA-2013-10953
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: 🔍

Upgrade: ClamAV 0.97.8
Patch: github.com

Timelineinfo

02/19/2013 🔍
04/23/2013 +62 days 🔍
04/23/2013 +0 days 🔍
04/23/2013 +0 days 🔍
04/24/2013 +1 days 🔍
04/25/2013 +1 days 🔍
05/13/2013 +18 days 🔍
06/13/2014 +396 days 🔍
05/10/2021 +2523 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: 53150⛔
Researcher: Felix Groebert
Organization: Google Security Team
Status: Not defined
Confirmation: 🔍

CVE: CVE-2013-2020 (🔍)
GCVE (CVE): GCVE-0-2013-2020
GCVE (VulDB): GCVE-100-8507

OVAL: 🔍
IAVM: 🔍

SecurityFocus: 59434
Secunia: 53150 - ClamAV Two Denial of Service Vulnerabilities, Moderately Critical
OSVDB: 92692

See also: 🔍

Entryinfo

Created: 04/25/2013 10:15
Updated: 05/10/2021 09:08
Changes: 04/25/2013 10:15 (73), 05/10/2019 18:39 (8), 05/10/2021 09:07 (4), 05/10/2021 09:08 (1)
Complete: 🔍
Committer: olku
Cache ID: 216:358:103

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