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.
6.7	$0-$5k	0.00

A vulnerability classified as critical was found in Avast Antivirus up to 4.7.981 (Anti-Malware Software). Affected by this vulnerability is some unknown functionality of the file unzoo.c of the component Zoo Archive Handler. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The program does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. The summary by CVE is:

zoo decoder 2.10 (zoo-2.10), as used in multiple products including (1) Barracuda Spam Firewall 3.4 and later with virusdef before 2.0.6399, (2) Spam Firewall before 3.4 20070319 with virusdef before 2.0.6399o, and (3) AMaViS 2.4.1 and earlier, allows remote attackers to cause a denial of service (infinite loop) via a ZOO archive with a direntry structure that points to a previous file.

The weakness was released 05/08/2007 by Jean-Sebastien Guay-Leroux (Website). The advisory is shared at guay-leroux.com. This vulnerability is known as CVE-2007-1669 since 03/24/2007. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known.

It is declared as proof-of-concept.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at X-Force (34080). Entries connected to this vulnerability are available at 3066, 3060, 3073 and 3090.

Productinfo

Type

• Anti-Malware Software

Vendor

• Avast

Name

• Antivirus

License

• free

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv3info

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: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

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

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/24/2007 🔍
05/04/2007 +40 days 🔍
05/08/2007 +4 days 🔍
05/08/2007 +0 days 🔍
05/10/2007 +2 days 🔍
05/18/2007 +8 days 🔍
03/15/2021 +5050 days 🔍

Sourcesinfo

Advisory: guay-leroux.com
Researcher: Jean-Sebastien Guay-Leroux
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2007-1669 (🔍)
X-Force: 34080 - Multiple vendor ZOO archive decompression denial of service, Medium Risk
SecurityFocus: 23823
Secunia: 25122 - Barracuda Spam Firewall Zoo Denial of Service Vulnerability, Less Critical
OSVDB: 37302 - zoo Decoder unzoo.c Malformed Zoo Archive Handling DoS
Vupen: ADV-2007-1699

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

Entryinfo

Created: 05/10/2007 02:57 PM
Updated: 03/15/2021 01:32 PM
Changes: 05/10/2007 02:57 PM (56), 08/04/2015 12:21 PM (12), 03/15/2021 01:29 PM (8), 03/15/2021 01:32 PM (2)
Complete: 🔍

Discussion

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