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.
4.2	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in GNU Emacs. This affects an unknown part of the file gnus-fun.el. The manipulation leads to link following. This vulnerability is documented as CVE-2014-3421. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in GNU Emacs (Word Processing Software). It has been rated as problematic. This issue affects an unknown functionality of the file gnus-fun.el. The manipulation with an unknown input leads to a link following vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, and integrity. The summary by CVE is:

lisp/gnus/gnus-fun.el in GNU Emacs 24.3 and earlier allows local users to overwrite arbitrary files via a symlink attack on the /tmp/gnus.face.ppm temporary file.

The weakness was released 05/07/2014 by Rob Browning as Bug#747100 as not defined posting (Mailing List). The advisory is shared at lists.gnu.org. The identification of this vulnerability is CVE-2014-3421 since 05/07/2014. An attack has to be approached locally. The successful exploitation needs a simple authentication. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 74236 (Fedora 20 : emacs-24.3-17.fc20 (2014-6554)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 167782 (SUSE Enterprise Linux Security update for emacs (SUSE-SU-2015:0834-1)).

Upgrading to version 24.3.91 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (93273), Tenable (74236), SecurityFocus (BID 67253†) and Vulnerability Center (SBV-44872†). Entries connected to this vulnerability are available at VDB-13302, VDB-13303 and VDB-13304. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Word Processing Software

Vendor

• GNU

Name

• Emacs

Version

• 20.0
• 20.1
• 20.2
• 20.3
• 20.4
• 20.5
• 20.6
• 20.7
• 21
• 21.1
• 21.2
• 21.2.1
• 21.3
• 21.3.1
• 21.4
• 22.1
• 22.2
• 22.3
• 23.1
• 23.2
• 23.3
• 23.4
• 24.1
• 24.2
• 24.3

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: 4.4
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.4
VulDB Temp Score: 4.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

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: No

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: 74236
Nessus Name: Fedora 20 : emacs-24.3-17.fc20 (2014-6554)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Emacs 24.3.91

Timelineinfo

05/05/2014 🔍
05/05/2014 +0 days 🔍
05/07/2014 +2 days 🔍
05/07/2014 +0 days 🔍
05/08/2014 +1 days 🔍
05/22/2014 +14 days 🔍
05/30/2014 +8 days 🔍
06/10/2014 +11 days 🔍
06/20/2021 +2567 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: Bug#747100
Researcher: Rob Browning
Status: Not defined
Confirmation: 🔍

CVE: CVE-2014-3421 (🔍)
GCVE (CVE): GCVE-0-2014-3421
GCVE (VulDB): GCVE-100-13301
X-Force: 93273 - GNU Emacs gnus-fun.el symlink, Medium Risk
SecurityFocus: 67253 - GNU Emacs Multiple Insecure Temporary File Handling Vulnerabilities
Vulnerability Center: 44872 - GNU Emacs Before 24.3.91 Local File System Write via a Symlink Attack, Low

See also: 🔍

Entryinfo

Created: 05/22/2014 17:12
Updated: 06/20/2021 09:43
Changes: 05/22/2014 17:12 (74), 05/30/2017 11:03 (2), 06/20/2021 09:43 (3)
Complete: 🔍
Cache ID: 216:C99:103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

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