CVE-2019-12209
- State
- Published
- Severity
- Not scored
- Published
- Jun 4, 2019
- Updated
- Aug 4, 2024
- Reserved
- May 20, 2019
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.
Scores
The record has no CVSS score.
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- https://github.com/Yubico/pam-u2f/commit/7db3386fcdb454e33a3ea30dcfb8e8960d4c3aa3
- https://developers.yubico.com/pam-u2f/Release_Notes.html
- [oss-security] 20190605 pam-u2f: CVE-2019-12210: debug_file file descriptor leak, CVE-2019-12209: symlink attack on u2f_keys leading to possible information leakmailing-list
- FEDORA-2019-b6d3c8b0a8vendor-advisory
- openSUSE-SU-2019:1708vendor-advisory
- openSUSE-SU-2019:1725vendor-advisory
- FEDORA-2019-cd8f4b9568vendor-advisory
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