cvs 1.12.12 cvsbug symlink

HistoryDiffrelatejsonxmlCTI

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.
5.3	$0-$5k	0.00

Summaryinfo

A vulnerability was found in cvs 1.12.12 and classified as problematic. This impacts an unknown function of the component cvsbug. Such manipulation leads to symlink. This vulnerability is documented as CVE-2005-2693. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in cvs 1.12.12. Affected by this issue is an unknown code of the component cvsbug. The manipulation with an unknown input leads to a symlink vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

cvsbug in CVS 1.12.12 and earlier creates temporary files insecurely, which allows local users to overwrite arbitrary files and execute arbitrary code via a symlink attack.

The bug was discovered 08/24/2005. The weakness was released 08/26/2005 by Josh Bressers as Bug 166366 as confirmed bug report (Bugzilla). The advisory is shared for download at bugzilla.redhat.com. This vulnerability is handled as CVE-2005-2693 since 08/25/2005. The exploitation is known to be easy. The attack needs to be approached locally. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 19609 (Debian DSA-802-1 : cvs - insecure temporary files), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 117832 (CentOS Security Update for CVS (CESA-2005:756)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (21983), Tenable (19609), SecurityFocus (BID 14648†), OSVDB (18949†) and Secunia (SA16765†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

1.12.12

CPE 2.3info

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CPE 2.2info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.9
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Nessus ID: 19609
Nessus Name: Debian DSA-802-1 : cvs - insecure temporary files
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 55235
OpenVAS Name: Debian Security Advisory DSA 802-1 (cvs)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Timelineinfo

08/19/2005 🔍
08/24/2005 +5 days 🔍
08/25/2005 +1 days 🔍
08/26/2005 +1 days 🔍
08/26/2005 +0 days 🔍
09/06/2005 +11 days 🔍
09/07/2005 +1 days 🔍
09/09/2005 +2 days 🔍
09/12/2005 +3 days 🔍
09/18/2005 +6 days 🔍
09/19/2005 +1 days 🔍
03/11/2015 +3460 days 🔍
06/29/2025 +3763 days 🔍

Sourcesinfo

Advisory: Bug 166366
Researcher: Josh Bressers
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2005-2693 (🔍)
GCVE (CVE): GCVE-0-2005-2693
GCVE (VulDB): GCVE-100-26156

OVAL: 🔍

X-Force: 21983
SecurityFocus: 14648 - CVS Cvsbug.In Script Insecure Temporary File Creation Vulnerability
Secunia: 16765 - Debian update for gcvs, Not Critical
OSVDB: 18949 - CVE-2005-2693 - CVS - Symlink Issue
SecurityTracker: 1014857
Vulnerability Center: 9189 - CVS Symlink Attack due to Insecure Temporary Files Creation of cvsbug, Medium
Vupen: ADV-2005-1667

Entryinfo

Created: 03/11/2015 23:39
Updated: 06/29/2025 22:14
Changes: 03/11/2015 23:39 (73), 06/09/2019 15:04 (17), 06/29/2025 22:14 (18)
Complete: 🔍
Cache ID: 216::103