Ulrich Callmeier Net-Acct 0.6/0.7/0.71 Temp File symlink

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 (≈)
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CTI Interest Score
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3.8$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Ulrich Callmeier Net-Acct 0.6/0.7/0.71. This vulnerability affects unknown code of the component Temp File Handler. This manipulation causes symlink. This vulnerability is handled as CVE-2004-0851. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Ulrich Callmeier Net-Acct 0.6/0.7/0.71. It has been declared as problematic. Affected by this vulnerability is an unknown code of the component Temp File Handler. 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 integrity. The summary by CVE is:

The (1) write_list and (2) dump_curr_list functions in Net-Acct before 0.71 allows local users to overwrite arbitrary files via a symlink attack on temporary files.

The bug was discovered 09/07/2004. The weakness was released 09/08/2004 by Stefan Nordhausen (Website). The advisory is shared at marc.info. This vulnerability is known as CVE-2004-0851 since 09/13/2004. The exploitation appears to be easy. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 15657 (Debian DSA-559-1 : net-acct - insecure temporary file), 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.

Upgrading to version 0.71 eliminates this vulnerability. A possible mitigation has been published 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (17283), Tenable (15657), SecurityFocus (BID 11125†), OSVDB (9750†) and Secunia (SA12476†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.8

VulDB Base Score: 4.0
VulDB Temp Score: 3.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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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: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 15657
Nessus Name: Debian DSA-559-1 : net-acct - insecure temporary file
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 53247
OpenVAS Name: Debian Security Advisory DSA 559-1 (net-acct)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Net-Acct 0.71

Timelineinfo

09/07/2004 🔍
09/07/2004 +0 days 🔍
09/07/2004 +0 days 🔍
09/07/2004 +0 days 🔍
09/08/2004 +1 days 🔍
09/08/2004 +0 days 🔍
09/13/2004 +5 days 🔍
10/06/2004 +23 days 🔍
11/10/2004 +35 days 🔍
06/16/2005 +218 days 🔍
04/14/2015 +3589 days 🔍
06/05/2019 +1512 days 🔍

Sourcesinfo

Advisory: marc.info
Researcher: Stefan Nordhausen
Status: Not defined
Confirmation: 🔍

CVE: CVE-2004-0851 (🔍)
GCVE (CVE): GCVE-0-2004-0851
GCVE (VulDB): GCVE-100-22201
X-Force: 17283
SecurityFocus: 11125 - Net-Acct Symbolic Link Vulnerability
Secunia: 12476 - Net-Acct Insecure Temporary File Creation Vulnerability, Less Critical
OSVDB: 9750 - Net-Acct - Symbolic Link Issue
Vulnerability Center: 8375 - Ulrich Callmeier Net-Acct 0.6 - 0.71 Allows Overwriting Arbitrary Files via Symlink Attack, Medium

Entryinfo

Created: 04/14/2015 13:19
Updated: 06/05/2019 00:19
Changes: 04/14/2015 13:19 (80), 06/05/2019 00:19 (4)
Complete: 🔍
Cache ID: 216:236:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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