3.1 LOW
- CVSS version (CVSS): 3.1
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): High (H)
- Privileges Required (PR): None (N)
- User Interaction (UI): Required (R)
- Scope (S): Unchanged (U)
- Confidentiality (C): None (N)
- Integrity (I): Low (L)
- Availability (A): None (N)
- Modified Attack Vector (MAV): Network (N)
- Modified Attack Complexity (MAC): High (H)
- Modified Privileges Required (MPR): None (N)
- Modified User Interaction (MUI): Required (R)
- Modified Confidentiality (MC): None (N)
- Modified Scope (MS): Unchanged (U)
- Modified Integrity (MI): Low (L)
- Modified Availability (MA): None (N)
Activity log
- Created suggestion
Symlink guard bypass in unarchive module allows planting symlinks during extraction
BBOT's unarchive module rejects archives containing symlink entries before extraction, but for zip and 7z archives it failed to detect symlinks whose listing carries a DOS-attribute prefix before the unix mode, as produced by legacy versions of p7zip. Such an archive, downloaded and extracted during a scan (for example via filedownload), bypassed the guard and caused an attacker-controlled symlink to be written into the extraction directory. The effect is limited to planting the symlink (its target is not written through), and only hosts using such a legacy p7zip build are affected; current mainline 7-Zip is not.
Affected products
- =<2.8.6
Matching in nixpkgs
pkgs.bbot
OSINT automation for hackers
pkgs.hebbot
Matrix bot which can generate "This Week in X" like blog posts
-
nixos-unstable 2.1-unstable-2024-09-20
- nixpkgs-unstable 2.1-unstable-2024-09-20
- nixos-unstable-small 2.1-unstable-2024-09-20
-
nixos-26.05 2.1-unstable-2024-09-20
- nixos-26.05-small 2.1-unstable-2024-09-20
- nixpkgs-26.05-darwin 2.1-unstable-2024-09-20
Package maintainers
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@robsliwi Robert Sliwinski <r@sliwi.org>
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@fabaff Fabian Affolter <mail@fabian-affolter.ch>
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@a-kenji Alexander Kenji Berthold <aks.kenji@protonmail.com>