VDB-75673 · CVE-2015-4156 · BID 74961

GNU Parallel prior 20150522 Temp File link following

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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5.1$0-$5k0.00

Summaryinfo

A vulnerability has been found in GNU Parallel and classified as problematic. This issue affects some unknown processing of the component Temp File Handler. This manipulation causes link following. This vulnerability appears as CVE-2015-4156. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic was found in GNU Parallel. Affected by this vulnerability is an unknown part of the component Temp File Handler. The manipulation with an unknown input leads to a link following vulnerability. The CWE definition for the vulnerability is CWE-59. The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

GNU Parallel before 20150522 (Nepal), when using (1) --cat or (2) --fifo with --sshlogin, allows local users to write to arbitrary files via a symlink attack on a temporary file.

The weakness was presented 06/02/2015 (Website). The advisory is shared at lists.opensuse.org. This vulnerability is known as CVE-2015-4156 since 06/02/2015. An attack has to be approached locally. A single authentication is necessary for exploitation. Neither technical details nor an exploit are publicly available.

Upgrading to version 20150522 eliminates this vulnerability.

The vulnerability is also documented in the databases at SecurityFocus (BID 74961†) and Vulnerability Center (SBV-54108†). See VDB-75672 for similar entry. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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: Link following
CWE: 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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Parallel 20150522

Timelineinfo

04/23/2015 🔍
04/23/2015 +0 days 🔍
06/02/2015 +40 days 🔍
06/02/2015 +0 days 🔍
06/02/2015 +0 days 🔍
06/03/2015 +1 days 🔍
11/02/2015 +152 days 🔍
03/10/2018 +859 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: lists.opensuse.org
Status: Not defined

CVE: CVE-2015-4156 (🔍)
GCVE (CVE): GCVE-0-2015-4156
GCVE (VulDB): GCVE-100-75673
SecurityFocus: 74961 - GNU Parallel CVE-2015-4156 Insecure Temporary File Creation Vulnerability
Vulnerability Center: 54108 - GNU Parallel <20150422 Local File System Write via Symlink Attack, Low

See also: 🔍

Entryinfo

Created: 06/03/2015 10:47
Updated: 03/10/2018 10:47
Changes: 06/03/2015 10:47 (54), 03/10/2018 10:47 (3)
Complete: 🔍
Cache ID: 216:A64:103

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

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