Git LFS may write to arbitrary files via crafted symlinks

Git LFS is a Git extension for versioning large files. In Git LFS versions 0.5.2 through 3.7.0, when populating a Git repository's working tree with the contents of Git LFS objects, certain Git LFS commands may write to files visible outside the current Git working tree if symbolic or hard links exist which collide with the paths of files tracked by Git LFS. The git lfs checkout and git lfs pull commands do not check for symbolic links before writing to files in the working tree, allowing an attacker to craft a repository containing symbolic or hard links that cause Git LFS to write to arbitrary file system locations accessible to the user running these commands. As well, when the git lfs checkout and git lfs pull commands are run in a bare repository, they could write to files visible outside the repository. The vulnerability is fixed in version 3.7.1. As a workaround, support for symlinks in Git may be disabled by setting the core.symlinks configuration option to false, after which further clones and fetches will not create symbolic links. However, any symbolic or hard links in existing repositories will still provide the opportunity for Git LFS to write to their targets.

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在文件访问前对链接解析不恰当(链接跟随)

Git Lfs 后置链接漏洞

Git Lfs是Git Lfs团队的一个用于git项目中处理大文件的命令行工具。 Git Lfs 0.5.2版本至3.7.0版本存在后置链接漏洞，该漏洞源于未检查符号链接，可能导致写入任意文件系统位置。

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