Avira Antivir Antivirus up to denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability, which was classified as critical, was found in Avira Antivir Antivirus up to (Anti-Malware Software). This affects an unknown function. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is:

Avira Antivir Antivirus before allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a malformed TAR archive.

The weakness was published 05/28/2007 by Shadow with n.runs (Website). The advisory is shared at secunia.com. This vulnerability is uniquely identified as CVE-2007-2973 since 05/31/2007. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 25348 (Avira AntiVir File Handling Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows.

Upgrading to version eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (34557) and Tenable (25348). Similar entries are available at 3099 and 37066.






CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.5
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍



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

NVD Base Score: 🔍


Class: Denial of service
CWE: CWE-404
ATT&CK: T1499

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 25348
Nessus Name: Avira AntiVir File Handling Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Threat Intelligenceinfo

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


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Antivir Antivirus


05/23/2007 🔍
05/28/2007 +5 days 🔍
05/28/2007 +0 days 🔍
05/29/2007 +0 days 🔍
05/29/2007 +0 days 🔍
05/29/2007 +0 days 🔍
05/31/2007 +1 days 🔍
05/31/2007 +0 days 🔍
05/31/2007 +0 days 🔍
06/04/2007 +4 days 🔍
03/15/2015 +2841 days 🔍
07/20/2021 +2319 days 🔍


Advisory: secunia.com
Researcher: Shadow
Organization: n.runs
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2007-2973 (🔍)
X-Force: 34557
SecurityTracker: 1018137 - AntiVir Divide By Zero Error in Processing TAR Files Lets Remote Users Deny Service
Vulnerability Center: 15290 - Avira Antivir Antivirus Remote Denial of Service via a Crafted TAR Archive, High
SecurityFocus: 24187 - Avira Antivir Antivirus Multiple Remote Vulnerabilities
Secunia: 25417 - Avira Antivir Multiple File Processing Vulnerabilities, Highly Critical
OSVDB: 36711 - Avira AntiVir Antivirus TAR Archive Handling DoS
Vupen: ADV-2007-1971

See also: 🔍


Created: 03/15/2015 03:58 PM
Updated: 07/20/2021 08:50 AM
Changes: 03/15/2015 03:58 PM (62), 12/28/2016 06:46 PM (19), 07/20/2021 08:50 AM (3)
Complete: 🔍


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