CVE-2019-12209
Description
Yubico pam-u2f 1.0.7 attempts parsing of the configured authfile (default $HOME/.config/Yubico/u2f_keys) as root (unless openasuser was enabled), and does not properly verify that the path lacks symlinks pointing to other files on the system owned by root. If the debug option is enabled in the PAM configuration, part of the file contents of a symlink target will be logged, possibly revealing sensitive information.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2019-12209
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2019-12209.html
Vendor advisory: arch — https://security.archlinux.org/ASA-201906-5
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 1.0.8-2 | |
| sles | affected | | |
| debian | bookworm | fixed | 1.0.8-1 |
| debian | bullseye | fixed | 1.0.8-1 |
| debian | forky | fixed | 1.0.8-1 |
| debian | sid | fixed | 1.0.8-1 |
| debian | trixie | fixed | 1.0.8-1 |
References
Verify integrity in audit chain (admin only). AS-IS.