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.
Advisories
Source ID Title
EUVD EUVD EUVD-2019-3854 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.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-04T23:17:38.129Z

Reserved: 2019-05-20T00:00:00

Link: CVE-2019-12209

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2019-06-04T21:29:00.780

Modified: 2024-11-21T04:22:25.500

Link: CVE-2019-12209

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.