GNU groff up to 1.21 gendef.sh link following

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6.2	$0-$5k	0.00

Summaryinfo

A vulnerability described as problematic has been identified in GNU groff up to 1.21. Affected is an unknown function of the file gendef.sh. The manipulation results in link following. This vulnerability is cataloged as CVE-2009-5079. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in GNU groff up to 1.21. It has been classified as critical. Affected is an unknown code block of the file gendef.sh. The manipulation with an unknown input leads to a link following vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity, and availability. CVE summarizes:

The (1) gendef.sh, (2) doc/fixinfo.sh, and (3) contrib/gdiffmk/tests/runtests.in scripts in GNU troff (aka groff) 1.21 and earlier allow local users to overwrite arbitrary files via a symlink attack on a gro#####.tmp or /tmp/##### temporary file.

The weakness was shared 06/30/2011 (oss-sec). The advisory is shared for download at openwall.com. This vulnerability is traded as CVE-2009-5079 since 06/30/2011. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 70649 (GLSA-201310-14 : Groff: Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 years after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (70649) and SecurityFocus (BID 36381†). The entries VDB-57807, VDB-57806, VDB-57805 and VDB-57803 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• GNU

Name

• groff

Version

• 1.10
• 1.11
• 1.11a
• 1.14
• 1.15
• 1.16
• 1.16.1
• 1.17.1
• 1.17.2
• 1.18.1
• 1.19
• 1.19.1
• 1.19.2
• 1.20
• 1.20.1
• 1.21

License

• open-source

Website

• Vendor: https://www.gnu.org/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 70649
Nessus Name: GLSA-201310-14 : Groff: Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 18627
OpenVAS Name: Gentoo Linux Local Check: https://security.gentoo.org/glsa/201310-14
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

06/30/2011 🔍
06/30/2011 +0 days 🔍
06/30/2011 +0 days 🔍
10/25/2013 +848 days 🔍
10/27/2013 +2 days 🔍
03/23/2015 +512 days 🔍
02/09/2019 +1419 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: openwall.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2009-5079 (🔍)
GCVE (CVE): GCVE-0-2009-5079
GCVE (VulDB): GCVE-100-57804
SecurityFocus: 36381

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 02/09/2019 11:16
Changes: 03/23/2015 16:50 (49), 02/09/2019 11:16 (15)
Complete: 🔍
Cache ID: 216:4F3:103

Once again VulDB remains the best source for vulnerability data.

Discussion

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