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CVE-2024-50338— Git Credential Manager 信息泄露漏洞

一分钟漏洞结论

影响对象
git-ecosystem git-credential-manager
利用判断
存在公开或 AI PoC，应优先验证
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

Git Credential Manager（GCM）是Git Ecosystem开源的一个安全的 Git 凭据助手。 Git Credential Manager存在信息泄露漏洞。攻击者利用该漏洞可以捕获另一个 Git 远程的凭证。以下产品和版本受到影响：Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8),Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 1

CVSS 7.4 · High EPSS 3.24% · P88
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一、 漏洞 CVE-2024-50338 基础信息

漏洞信息
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Vulnerability Title
Carriage-return character in remote URL allows malicious repository to leak credentials in Git Credential Manager
来源: CVE Program / CVE List V5
Vulnerability Description
Git Credential Manager (GCM) is a secure Git credential helper built on .NET that runs on Windows, macOS, and Linux. The Git credential protocol is text-based over standard input/output, and consists of a series of lines of key-value pairs in the format `key=value`. Git's documentation restricts the use of the NUL (`\0`) character and newlines to form part of the keys or values. When Git reads from standard input, it considers both LF and CRLF as newline characters for the credential protocol by virtue of calling `strbuf_getline` that calls to `strbuf_getdelim_strip_crlf`. Git also validates that a newline is not present in the value by checking for the presence of the line-feed character (LF, `\n`), and errors if this is the case. This captures both LF and CRLF-type newlines. Git Credential Manager uses the .NET standard library `StreamReader` class to read the standard input stream line-by-line and parse the `key=value` credential protocol format. The implementation of the `ReadLineAsync` method considers LF, CRLF, and CR as valid line endings. This is means that .NET considers a single CR as a valid newline character, whereas Git does not. This mismatch of newline treatment between Git and GCM means that an attacker can craft a malicious remote URL. When a user clones or otherwise interacts with a malicious repository that requires authentication, the attacker can capture credentials for another Git remote. The attack is also heightened when cloning from repositories with submodules when using the `--recursive` clone option as the user is not able to inspect the submodule remote URLs beforehand. This issue has been patched in version 2.6.1 and all users are advised to upgrade. Users unable to upgrade should only interact with trusted remote repositories, and not clone with `--recursive` to allow inspection of any submodule URLs before cloning those submodules.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
信息暴露
来源: CVE Program / CVE List V5
Vulnerability Title
Git Credential Manager 信息泄露漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Git Credential Manager（GCM）是Git Ecosystem开源的一个安全的 Git 凭据助手。 Git Credential Manager存在信息泄露漏洞。攻击者利用该漏洞可以捕获另一个 Git 远程的凭证。以下产品和版本受到影响：Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8),Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 1
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD

受影响产品

厂商 产品 影响版本 CPE 订阅
git-ecosystem git-credential-manager < 2.6.1 -

二、漏洞 CVE-2024-50338 的公开POC

# POC 描述 源链接 神龙链接
AI 生成 POC 高级
Qwen3.6-35B-A3B · 5661 chars
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三、漏洞 CVE-2024-50338 的情报信息

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CVE-2024-50338 补丁与修复 (4)

CVE-2024-50338 厂商安全公告 (2)

CVE-2024-50338 厂商页面 (2)

IV. Related Vulnerabilities

Same product: git-credential-manager
Same vendor: git-ecosystem
Same weakness: CWE-200

V. Comments for CVE-2024-50338

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