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CVE-2024-24575— libgit2 is vulnerable to a denial of service attack in `git_revparse_single`

Quick assessment

Affected
libgit2 libgit2
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

libgit2是一个可移植、使用C语言实现的Git核心开发包。 libgit2 存在资源管理错误漏洞。攻击者利用该漏洞使用特制的“git_revparse_single”输入可能会导致函数进入无限循环，从而可能导致拒绝服务攻击。

CVSS 7.5 · High EPSS 1.44% · P73
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I. Basic Information for CVE-2024-24575

Vulnerability Information
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Vulnerability Title
libgit2 is vulnerable to a denial of service attack in `git_revparse_single`
Source: CVE Program / CVE List V5
Vulnerability Description
libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Using well-crafted inputs to `git_revparse_single` can cause the function to enter an infinite loop, potentially causing a Denial of Service attack in the calling application. The revparse function in `src/libgit2/revparse.c` uses a loop to parse the user-provided spec string. There is an edge-case during parsing that allows a bad actor to force the loop conditions to access arbitrary memory. Potentially, this could also leak memory if the extracted rev spec is reflected back to the attacker. As such, libgit2 versions before 1.4.0 are not affected. Users should upgrade to version 1.6.5 or 1.7.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
libgit2 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libgit2是一个可移植、使用C语言实现的Git核心开发包。 libgit2 存在资源管理错误漏洞。攻击者利用该漏洞使用特制的“git_revparse_single”输入可能会导致函数进入无限循环，从而可能导致拒绝服务攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
libgit2 libgit2 >= 1.4.0, < 1.6.5 -

II. Public POCs for CVE-2024-24575

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III. Intelligence Information for CVE-2024-24575

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Patches & Fixes for CVE-2024-24575 (1)

Vendor Advisories for CVE-2024-24575 (1)

Mailing List Discussions for CVE-2024-24575 (5)

Other References for CVE-2024-24575 (2)

IV. Related Vulnerabilities

Same product: libgit2
Same vendor: libgit2
Same weakness: CWE-400

V. Comments for CVE-2024-24575

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