CVEvulnerability
CVE-2019-12209
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2019-06-04
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 7.5 HIGH — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:P/I:N/A:N
- Weaknesses
- CWE-59
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.
Affected configurations
• yubico pam-u2f 1.0.7
Related
Weakness · CWE (1)
- CWE-59 Improper Link Resolution Before File Access weakness
References
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00012.html lists.opensuse.org
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00018.html lists.opensuse.org
- http://www.openwall.com/lists/oss-security/2019/06/05/1 Exploit, Mailing List, Third Party Advisory
- https://developers.yubico.com/pam-u2f/Release_Notes.html Release Notes, Vendor Advisory
- https://github.com/Yubico/pam-u2f/commit/7db3386fcdb454e33a3ea30dcfb8e8960d4c3aa3 Patch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5FOR4ADC356JPCHAJI5UXZORLC3VNBPS/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZCGU6UQLI3ZTW3UYCTMQW7VDL5M4LCWR/ lists.fedoraproject.org
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00012.html lists.opensuse.org
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00018.html lists.opensuse.org
- http://www.openwall.com/lists/oss-security/2019/06/05/1 Exploit, Mailing List, Third Party Advisory
- https://developers.yubico.com/pam-u2f/Release_Notes.html Release Notes, Vendor Advisory
- https://github.com/Yubico/pam-u2f/commit/7db3386fcdb454e33a3ea30dcfb8e8960d4c3aa3 Patch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5FOR4ADC356JPCHAJI5UXZORLC3VNBPS/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZCGU6UQLI3ZTW3UYCTMQW7VDL5M4LCWR/ lists.fedoraproject.org