Git up to 2.30.0 connect.c git_connect_git privilege escalation

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.
5.3	$0-$5k	0.00

Summaryinfo

A vulnerability described as problematic has been identified in Git up to 2.30.0. Affected by this issue is the function git_connect_git of the file connect.c. Executing a manipulation can lead to an unknown weakness. This vulnerability is tracked as CVE-2021-40330. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Git up to 2.30.0 (Versioning Software) and classified as problematic. This vulnerability affects the function git_connect_git of the file connect.c. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was disclosed 08/31/2021. The advisory is shared for download at github.com. This vulnerability was named CVE-2021-40330. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 353137 (CentOS Linux 7 [TuxCare] Security Update: emacs-git / emacs-git-el / git / git-all / git-bzr / git-cvs / etc Multiple Vulnerabilities (CENTOS7:CLSA-2024:1712672592)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.30.1 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (353137). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Versioning Software

Name

• Git

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14
• 2.15
• 2.16
• 2.17
• 2.18
• 2.19
• 2.20
• 2.21
• 2.22
• 2.23
• 2.24
• 2.25
• 2.26
• 2.27
• 2.28
• 2.29
• 2.30.0

License

• open-source

Website

• Product: https://github.com/git/git/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
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: 🔍

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

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: 353137
Nessus Name: CentOS Linux 7 [TuxCare] Security Update: emacs-git / emacs-git-el / git / git-all / git-bzr / git-cvs / etc Multiple Vulnerabilities (CENTOS7:CLSA-2024:1712672592)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Git 2.30.1
Patch: github.com

Timelineinfo

08/31/2021 🔍
08/31/2021 +0 days 🔍
08/31/2021 +0 days 🔍
10/01/2026 +1857 days 🔍

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2021-40330 (🔍)
GCVE (CVE): GCVE-0-2021-40330
GCVE (VulDB): GCVE-100-181732

Entryinfo

Created: 08/31/2021 11:01
Updated: 10/01/2026 12:38
Changes: 08/31/2021 11:01 (39), 09/03/2021 14:32 (2), 10/01/2026 12:38 (18)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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