CVE编号
CVE-2021-21300利用情况
暂无补丁情况
官方补丁披露时间
2021-03-09漏洞描述
Git is an open-source distributed revision control system. In affected versions of Git a specially crafted repository that contains symbolic links as well as files using a clean/smudge filter such as Git LFS, may cause just-checked out script to be executed while cloning onto a case-insensitive file system such as NTFS, HFS+ or APFS (i.e. the default file systems on Windows and macOS). Note that clean/smudge filters have to be configured for that. Git for Windows configures Git LFS by default, and is therefore vulnerable. The problem has been patched in the versions published on Tuesday, March 9th, 2021. As a workaound, if symbolic link support is disabled in Git (e.g. via `git config --global core.symlinks false`), the described attack won't work. Likewise, if no clean/smudge filters such as Git LFS are configured globally (i.e. _before_ cloning), the attack is foiled. As always, it is best to avoid cloning repositories from untrusted sources. The earliest impacted version is 2.14.2. The fix versions are: 2.30.1, 2.29.3, 2.28.1, 2.27.1, 2.26.3, 2.25.5, 2.24.4, 2.23.4, 2.22.5, 2.21.4, 2.20.5, 2.19.6, 2.18.5, 2.17.62.17.6.解决建议
建议您更新当前系统或软件至最新版，完成漏洞的修复。
参考链接 |
|
|---|---|
| http://packetstormsecurity.com/files/163978/Git-LFS-Clone-Command-Execution.html | |
| http://seclists.org/fulldisclosure/2021/Apr/60 | |
| http://www.openwall.com/lists/oss-security/2021/03/09/3 | |
| https://git-scm.com/docs/git-config#Documentation/git-config.txt-coresymlinks | |
| https://git-scm.com/docs/gitattributes#_filter | |
| https://github.com/git/git/commit/684dd4c2b414bcf648505e74498a608f28de4592 | |
| https://github.com/git/git/security/advisories/GHSA-8prw-h3cq-mghm | |
| https://lists.fedoraproject.org/archives/list/[email protected]... | |
| https://lists.fedoraproject.org/archives/list/[email protected]... | |
| https://lists.fedoraproject.org/archives/list/[email protected]... | |
| https://lore.kernel.org/git/[email protected]/ | |
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-21300 | |
| https://security.gentoo.org/glsa/202104-01 | |
| https://support.apple.com/kb/HT212320 |
受影响软件情况
| # | 类型 | 厂商 | 产品 | 版本 | 影响面 | ||||
| 1 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 运行在以下环境 | |||||||||
| 应用 | git-scm | git | * |
Up to (including) 2.14.2 |
|||||
| 运行在以下环境 | |||||||||
| 应用 | git-scm | git | * |
From (including) 2.17.0 |
Up to (excluding) 2.17.6 |
||||
| 运行在以下环境 | |||||||||
| 应用 | git-scm | git | * |
From (including) 2.18.0 |
Up to (excluding) 2.18.5 |
||||
| 运行在以下环境 | |||||||||
| 应用 | git-scm | git | * |
From (including) 2.19.0 |
Up to (excluding) 2.19.6 |
||||
| 运行在以下环境 | |||||||||
| 应用 | git-scm | git | * |
From (including) 2.20.0 |
Up to (excluding) 2.20.5 |
||||
| 运行在以下环境 | |||||||||
| 应用 | git-scm | git | * |
From (including) 2.21.0 |
Up to (excluding) 2.21.4 |
||||
| 运行在以下环境 | |||||||||
| 应用 | git-scm | git | * |
From (including) 2.22.0 |
Up to (excluding) 2.22.5 |
||||
| 运行在以下环境 | |||||||||
| 应用 | git-scm | git | * |
From (including) 2.23.0 |
Up to (excluding) 2.23.4 |
||||
| 运行在以下环境 | |||||||||
| 应用 | git-scm | git | * |
From (including) 2.24.0 |
Up to (excluding) 2.24.4 |
||||
| 运行在以下环境 | |||||||||
| 应用 | git-scm | git | * |
From (including) 2.25.0 |
Up to (excluding) 2.25.5 |
||||
| 运行在以下环境 | |||||||||
| 应用 | git-scm | git | * |
From (including) 2.26.0 |
Up to (excluding) 2.26.3 |
||||
| 运行在以下环境 | |||||||||
| 应用 | git-scm | git | * |
From (including) 2.29.0 |
Up to (excluding) 2.29.3 |
||||
| 运行在以下环境 | |||||||||
| 应用 | git-scm | git | * |
From (including) 2.30.0 |
Up to (excluding) 2.30.2 |
||||
| 运行在以下环境 | |||||||||
| 应用 | git-scm | git | 2.27.0 | - | |||||
| 运行在以下环境 | |||||||||
| 应用 | git-scm | git | 2.28.0 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.10 | git | * |
Up to (excluding) 2.22.5-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.11 | git | * |
Up to (excluding) 2.24.3-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.12 | git | * |
Up to (excluding) 2.26.3-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.13 | git | * |
Up to (excluding) 2.30.2-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.14 | git | * |
Up to (excluding) 2.30.2-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.15 | git | * |
Up to (excluding) 2.30.2-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_edge | git | * |
Up to (excluding) 2.30.2-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_2 | git | * |
Up to (excluding) 2.23.4-1.amzn2.0.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_AMI | git | * |
Up to (excluding) 2.18.5-2.73.amzn1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | git | * |
Up to (excluding) 2.20.1-2+deb10u3 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | git | * |
Up to (excluding) 2.30.1-1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | git | * |
Up to (excluding) 2.11.0-3+deb9u7 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_32 | git | * |
Up to (excluding) 2.26.3-2.fc32 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_33 | git | * |
Up to (excluding) 2.30.2-1.fc33 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_34 | git | * |
Up to (excluding) 2.30.2-1.fc34 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.2 | git | * |
Up to (excluding) 2.26.2-lp152.2.6.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.3 | git | * |
Up to (excluding) 2.31.1-10.3.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP5 | git | * |
Up to (excluding) 2.26.2-27.43.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_16.04 | git | * |
Up to (excluding) 1:2.7.4-0ubuntu1.10 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_18.04 | git | * |
Up to (excluding) 1:2.17.1-1ubuntu0.8 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_20.04 | git | * |
Up to (excluding) 1:2.25.1-1ubuntu3.1 |
|||||
- 攻击路径 远程
- 攻击复杂度 困难
- 权限要求 无需权限
- 影响范围 有限影响
- EXP成熟度 N/A
- 补丁情况 官方补丁
- 数据保密性 数据泄露
- 数据完整性 无影响
- 服务器危害 无影响
- 全网数量 N/A
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