Flexbackup 1.2.1 symlink

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Flexbackup 1.2.1. This vulnerability affects unknown code. Executing a manipulation can lead to symlink. This vulnerability appears as CVE-2005-4802. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic was found in Flexbackup 1.2.1 (Backup Software). This vulnerability affects an unknown part. 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:

Flexbackup 1.2.1 and earlier allows local users to overwrite files and execute code via a symlink attack on temporary files. NOTE: the raw source referenced an incorrect candidate number; this is the correct number to use.

The bug was discovered 10/17/2005. The weakness was presented 12/31/2005 (Website). The advisory is shared for download at zataz.net. This vulnerability was named CVE-2005-4802 since 05/17/2006. The exploitation appears to be easy. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 75 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 23702 (Debian DSA-1216-1 : flexbackup - 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 eliminates this vulnerability. A possible mitigation has been published 12 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (22754), Tenable (23702), SecurityFocus (BID 15050†), OSVDB (20021†) and Secunia (SA17209†). See VDB-28109 for similar entry. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.7

VulDB Base Score: 5.9
VulDB Temp Score: 5.7
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: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 23702
Nessus Name: Debian DSA-1216-1 : flexbackup - insecure temporary file
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

10/10/2005 🔍
10/17/2005 +7 days 🔍
10/17/2005 +0 days 🔍
10/17/2005 +0 days 🔍
10/18/2005 +1 days 🔍
12/31/2005 +74 days 🔍
12/31/2005 +0 days 🔍
05/17/2006 +137 days 🔍
11/20/2006 +187 days 🔍
11/22/2006 +2 days 🔍
03/12/2015 +3032 days 🔍
06/10/2019 +1551 days 🔍

Sourcesinfo

Advisory: zataz.net
Status: Not defined
Confirmation: 🔍

CVE: CVE-2005-4802 (🔍)
GCVE (CVE): GCVE-0-2005-4802
GCVE (VulDB): GCVE-100-28108
X-Force: 22754
SecurityFocus: 15050 - Graphviz Insecure Temporary File Creation Vulnerability
Secunia: 17209 - Flexbackup Insecure Temporary File Creation, Less Critical
OSVDB: 20021 - Flexbackup /tmp file symlink
SecurityTracker: 1015068
Vulnerability Center: 9413 - Graphviz <2.2.1 Local File Overwrite via Symlink Attack, Low

See also: 🔍

Entryinfo

Created: 03/12/2015 11:11
Updated: 06/10/2019 11:59
Changes: 03/12/2015 11:11 (73), 06/10/2019 11:59 (7)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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