CVE-2022-41903— Git 输入验证错误漏洞
一分钟漏洞结论
影响对象
git git
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是一套免费、开源的分布式版本控制系统。 Git存在输入验证错误漏洞，该漏洞源于存在整数溢出问题。
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一、 漏洞 CVE-2022-41903 基础信息
漏洞信息
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Vulnerability Title
Integer overflow in `git archive`, `git log --format` leading to RCE in git
来源: CVE Program / CVE List V5
Vulnerability Description
Git is distributed revision control system. `git log` can display commits in an arbitrary format using its `--format` specifiers. This functionality is also exposed to `git archive` via the `export-subst` gitattribute. When processing the padding operators, there is a integer overflow in `pretty.c::format_and_pad_commit()` where a `size_t` is stored improperly as an `int`, and then added as an offset to a `memcpy()`. This overflow can be triggered directly by a user running a command which invokes the commit formatting machinery (e.g., `git log --format=...`). It may also be triggered indirectly through git archive via the export-subst mechanism, which expands format specifiers inside of files within the repository during a git archive. This integer overflow can result in arbitrary heap writes, which may result in arbitrary code execution. The problem has been patched in the versions published on 2023-01-17, going back to v2.30.7. Users are advised to upgrade. Users who are unable to upgrade should disable `git archive` in untrusted repositories. If you expose git archive via `git daemon`, disable it by running `git config --global daemon.uploadArch false`.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
来源: CVE Program / CVE List V5
Vulnerability Title
Git 输入验证错误漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Git是一套免费、开源的分布式版本控制系统。 Git存在输入验证错误漏洞，该漏洞源于存在整数溢出问题。
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
二、漏洞 CVE-2022-41903 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|---|---|---|
| 1 | vulnerabilities, CVE-2022-41903, and CVE-2022-23521, that affect versions 2.39 and older. Git for Windows was also patched to address an additional, Windows-specific issue known as CVE-2022-41953. | https://github.com/sondermc/git-cveissues | POC详情 |
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CVE-2022-41903 补丁与修复 (1)
CVE-2022-41903 厂商安全公告 (2)
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https://github.com/git/git/security/advisories/GHSA-475x-2q3q-hvwq x_refsource_CONFIRM
CVE-2022-41903 其他参考 (2)
IV. Related Vulnerabilities
V. Comments for CVE-2022-41903
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