VDB-8565 · CVE-2013-2021 · BID 59434

SourceFire ClamAV up to 0.97.7 libclamav/pdf.c cli_scanpe File memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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9.5$0-$5k0.00

A vulnerability was found in SourceFire ClamAV up to 0.97.7 (Anti-Malware Software). It has been classified as very critical. This affects the function cli_scanpe of the file libclamav/pdf.c. The manipulation as part of a File leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

pdf.c in ClamAV 0.97.1 through 0.97.7 allows remote attackers to cause a denial of service (out-of-bounds-read) via a crafted length value in an encrypted PDF file.

The weakness was published 04/23/2013 by Felix Groebert with Google Security Team as not defined changelog entry (Website). The advisory is shared at freecode.com. This vulnerability is uniquely identified as CVE-2013-2021 since 02/19/2013. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/10/2021).

The vulnerability scanner Nessus provides a plugin with the ID 66308 (ClamAV < 0.97.8 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc.. 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. 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. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 13009.

The vulnerability is also documented in the vulnerability database at Tenable (66308). Similar entries are available at 8507, 8564 and 68295.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.5

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 66308
Nessus Name: ClamAV < 0.97.8 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

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
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

Fortigate IPS: 🔍

Timelineinfo

02/19/2013 🔍
04/23/2013 +62 days 🔍
04/23/2013 +0 days 🔍
04/23/2013 +0 days 🔍
04/23/2013 +0 days 🔍
04/24/2013 +1 days 🔍
05/03/2013 +9 days 🔍
05/07/2013 +4 days 🔍
05/13/2013 +6 days 🔍
05/10/2021 +2919 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: freecode.com
Researcher: Felix Groebert
Organization: Google Security Team
Status: Not defined
Confirmation: 🔍

CVE: CVE-2013-2021 (🔍)
OVAL: 🔍
IAVM: 🔍

Vulnerability Center: 39471 - ClamAV <0.97.8 Remote DoS and Code Execution Vulnerability by Parsing a PDF Document (CVE-2013-2021), Medium
SecurityFocus: 59434
Secunia: 53150 - ClamAV Two Denial of Service Vulnerabilities, Moderately Critical
OSVDB: 92835

See also: 🔍

Entryinfo

Created: 05/03/2013 17:44
Updated: 05/10/2021 11:03
Changes: 05/03/2013 17:44 (79), 05/10/2019 18:39 (10), 05/10/2021 10:57 (3), 05/10/2021 11:03 (1)
Complete: 🔍

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