| 标题 | GNU cramfs-tools below v2.2 Symlink Following |
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| 描述 | GNU cramfs-tools is a set of utilities for managing the Cramfs (Compressed ROM File System), a lightweight, read-only Linux file system optimized for space efficiency and low memory usage. It includes mkcramfs/mkfs.cramfs to create Cramfs images from directories, and cramfsck to verify integrity or extract contents.
cramfs-tools cramfsck contains a hostile-prestate filesystem issue in continue-on-error mode (-c): if the chosen extraction directory already exists as a symlink, cramfsck -x records the mkdir() failure but still continues extraction and performs filesystem writes through the symlink target, outside the intended destination directory.
This aligns with CWE-59: Improper Link Resolution Before File Access. |
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| 来源 | ⚠️ https://github.com/npitre/cramfs-tools/issues/13 |
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| 用户 | nich0las (UID 51709) |
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| 提交 | 2026-04-24 04時52分 (6 月前) |
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| 管理 | 2026-05-17 11時59分 (23 days later) |
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| 状态 | 已接受 |
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| VulDB条目 | 364408 [npitre cramfs-tools 直到 2.2 cramfsck.c change_file_status 权限提升] |
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| 积分 | 20 |
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