VDB-2176 · CVE-2006-1892 · BID 17535

Avast! Antivirus 1.0.5 symlink

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Avast! Antivirus 1.0.5. It has been declared as problematic. This impacts an unknown function. Executing a manipulation can lead to symlink. This vulnerability is handled as CVE-2006-1892. There is not any exploit available. It is advisable to use an alternative in place of the affected component.

Detailsinfo

A vulnerability was found in Avast! Antivirus 1.0.5 (Anti-Malware Software). It has been declared as problematic. This vulnerability affects some unknown processing. The manipulation with an unknown input leads to a symlink vulnerability. The CWE definition for the vulnerability is CWE-61. The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

avast! 4 Linux Home Edition 1.0.5 allows local users to modify permissions of arbitrary files via a symlink attack on the /tmp/_avast4_ temporary directory.

The weakness was released 04/18/2006 by Julian L. as not defined posting (Bugtraq). The advisory is shared for download at securityfocus.com. This vulnerability was named CVE-2006-1892 since 04/20/2006. Access to the local network is required for this attack to succeed. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

After before and not just, there has been an exploit disclosed. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $5k-$25k.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at avast.com. The problem might be mitigated by replacing the product with as an alternative. The best possible mitigation is suggested to be establishing an alternative product.

The vulnerability is also documented in the databases at SecurityFocus (BID 17535†), OSVDB (24804†) and Secunia (SA19683†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.7

VulDB Base Score: 5.0
VulDB Temp Score: 4.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Symlink
CWE: CWE-61 / CWE-59
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Alternative
Status: 🔍

0-Day Time: 🔍

Patch: avast.com

Timelineinfo

04/14/2006 🔍
04/14/2006 +0 days 🔍
04/18/2006 +4 days 🔍
04/18/2006 +0 days 🔍
04/18/2006 +0 days 🔍
04/20/2006 +1 days 🔍
04/20/2006 +0 days 🔍
04/20/2006 +0 days 🔍
04/21/2018 +4384 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Researcher: Julian L.
Status: Not defined

CVE: CVE-2006-1892 (🔍)
GCVE (CVE): GCVE-0-2006-1892
GCVE (VulDB): GCVE-100-2176
SecurityFocus: 17535 - Avast! Linux Home Edition Insecure Temporary File Creation Vulnerability
Secunia: 19683 - avast! Insecure Temporary File Creation, Less Critical
OSVDB: 24804 - avast! _avast4_ Symlink Arbitrary File Permission Modification
Vupen: ADV-2006-1387

Entryinfo

Created: 04/20/2006 17:24
Updated: 04/21/2018 09:21
Changes: 04/20/2006 17:24 (63), 04/21/2018 09:21 (8)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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