GHSA-6xv5-86q9-7xr8 – github.com/cyphar/filepath-securejoin

Package

Manager: go
Name: github.com/cyphar/filepath-securejoin
Vulnerable Version: >=0 <0.2.4

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS: N/A pctlN/A

Details

SecureJoin: on windows, paths outside of the rootfs could be inadvertently produced ### Impact For Windows users of `github.com/cyphar/filepath-securejoin`, until v0.2.4 it was possible for certain rootfs and path combinations (in particular, where a malicious Unix-style `/`-separated unsafe path was used with a Windows-style rootfs path) to result in generated paths that were outside of the provided rootfs. It is unclear to what extent this has a practical impact on real users, but given the possible severity of the issue we have released an emergency patch release that resolves this issue. Thanks to @pjbgf for discovering, debugging, and fixing this issue (as well as writing some tests for it). ### Patches c121231e1276e11049547bee5ce68d5a2cfe2d9b is the patch fixing this issue. v0.2.4 contains the fix. ### Workarounds Users could use `filepath.FromSlash()` on all unsafe paths before passing them to `filepath-securejoin`. ### References See #9.

Metadata

Created: 2023-09-07T12:58:58Z
Modified: 2023-09-07T12:58:58Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/09/GHSA-6xv5-86q9-7xr8/GHSA-6xv5-86q9-7xr8.json
CWE IDs: []
Alternative ID: N/A
Finding: F063
Auto approve: 1