- Description
- Hermes WebUI before version 0.51.303 contains a time-of-check time-of-use (TOCTOU) race condition vulnerability in the git_discard function within api/workspace_git.py that allows attackers to delete files outside the configured workspace boundary by replacing a validated path component with a symlink after validation but before deletion. Attackers can substitute a workspace-controlled path component with a symlink pointing to an external directory between the safe_resolve_ws() validation step and the subsequent Path.unlink() or shutil.rmtree() deletion call, causing the delete operation to follow the symlink and remove arbitrary files outside the workspace.
- Source
- disclosure@vulncheck.com
- NVD status
- Deferred
CVSS 4.0
- Type
- Secondary
- Base score
- 4.3
- Impact score
- -
- Exploitability score
- -
- Vector string
- CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:A/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Severity
- MEDIUM
CVSS 3.1
- Type
- Secondary
- Base score
- 5
- Impact score
- 4.2
- Exploitability score
- 0.8
- Vector string
- CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:H
- Severity
- MEDIUM
- disclosure@vulncheck.com
- CWE-367
- Hype score
- Not currently trending