VDB-188032 · CVE-2021-39917 · Issue 33848

GitLab Community Edition/Enterprise Edition up to 14.3.5/14.4.3/14.5.1 Quick Actions incorrect regex

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 described as critical has been identified in GitLab Community Edition and Enterprise Edition up to 14.3.5/14.4.3/14.5.1. This impacts an unknown function of the component Quick Actions Handler. Executing a manipulation can lead to incorrect regex. This vulnerability is tracked as CVE-2021-39917. The attack can be launched remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in GitLab Community Edition and Enterprise Edition up to 14.3.5/14.4.3/14.5.1 (Bug Tracking Software) and classified as critical. This vulnerability affects an unknown code block of the component Quick Actions Handler. The manipulation with an unknown input leads to a incorrect regex vulnerability. The CWE definition for the vulnerability is CWE-185. The product specifies a regular expression in a way that causes data to be improperly matched or compared. As an impact it is known to affect availability.

The weakness was disclosed 12/13/2021 as 33848. The advisory is shared for download at gitlab.com. This vulnerability was named CVE-2021-39917. There are neither technical details nor an exploit publicly available.

Upgrading to version 14.3.6, 14.4.4 or 14.5.2 eliminates this vulnerability.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Bug Tracking Software

Vendor

GitLab

Name

Version

License

open-source

Website

Vendor: https://gitlab.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 4.3
CNA Vector (GitLab Inc.): 🔍

CVSSv2info

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

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Incorrect regex
CWE: CWE-185 / CWE-697
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Community Edition/Enterprise Edition 14.3.6/14.4.4/14.5.2

Timelineinfo

08/23/2021 🔍
12/13/2021 +112 days 🔍
12/13/2021 +0 days 🔍
12/16/2021 +3 days 🔍

Sourcesinfo

Vendor: gitlab.com

Advisory: 33848
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-39917 (🔍)
GCVE (CVE): GCVE-0-2021-39917
GCVE (VulDB): GCVE-100-188032

Entryinfo

Created: 12/13/2021 18:26
Updated: 12/16/2021 08:32
Changes: 12/13/2021 18:26 (48), 12/13/2021 18:28 (2), 12/16/2021 08:32 (3)
Complete: 🔍
Cache ID: 216::103