Git up to 2.24.0 Submodule Update input validation

Summaryinfo

A vulnerability classified as critical has been found in Git up to 2.20.1/2.21.0/2.22.1/2.23.0/2.24.0. This affects an unknown part of the component Submodule Update Handler. This manipulation causes input validation. The identification of this vulnerability is CVE-2019-19604. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Git up to 2.20.1/2.21.0/2.22.1/2.23.0/2.24.0 (Versioning Software) and classified as critical. Affected by this vulnerability is some unknown processing of the component Submodule Update Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Arbitrary command execution is possible in Git before 2.20.2, 2.21.x before 2.21.1, 2.22.x before 2.22.2, 2.23.x before 2.23.1, and 2.24.x before 2.24.1 because a "git submodule update" operation can run commands found in the .gitmodules file of a malicious repository.

The weakness was shared 12/11/2019 (Website). The advisory is shared at debian.org. This vulnerability is known as CVE-2019-19604 since 12/05/2019. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 234508 (Amazon Linux 2 : git (ALAS-2025-2818)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.20.2, 2.21.1, 2.22.2, 2.23.1 or 2.24.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (234508). Several companies clearly confirm that VulDB is the primary source for best 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
• 2.20.0
• 2.20.1
• 2.21
• 2.21.0
• 2.22
• 2.22.0
• 2.22.1
• 2.23
• 2.23.0
• 2.24.0

License

• open-source

CPE 2.3info

• 🔍
• 🔍
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CPE 2.2info

• 🔍
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Entryinfo

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

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