CVE-2019-12209

Name: CVE-2019-12209
Creator: NVD / NIST
Published: 2019-06-04T21:29:00.78+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.89%

Last modified Jun 17, 2026

CVE-2019-12209 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 2.89% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

2.89%

85.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-59

Affected Software

Vendor	Product	Versions
Yubico	Pam-U2f	1.0.7

References

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00012.html
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00018.html
http://www.openwall.com/lists/oss-security/2019/06/05/1Exploit, Mailing List, Third Party Advisory
https://developers.yubico.com/pam-u2f/Release_Notes.htmlRelease Notes, Vendor Advisory
https://github.com/Yubico/pam-u2f/commit/7db3386fcdb454e33a3ea30dcfb8e8960d4c3aa3Patch, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5FOR4ADC356JPCHAJI5UXZORLC3VNBPS/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZCGU6UQLI3ZTW3UYCTMQW7VDL5M4LCWR/
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00012.html
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00018.html
http://www.openwall.com/lists/oss-security/2019/06/05/1Exploit, Mailing List, Third Party Advisory
https://developers.yubico.com/pam-u2f/Release_Notes.htmlRelease Notes, Vendor Advisory
https://github.com/Yubico/pam-u2f/commit/7db3386fcdb454e33a3ea30dcfb8e8960d4c3aa3Patch, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5FOR4ADC356JPCHAJI5UXZORLC3VNBPS/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZCGU6UQLI3ZTW3UYCTMQW7VDL5M4LCWR/

Timeline

Published: Jun 4, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-12209?

How severe is CVE-2019-12209?

Severity scoring for CVE-2019-12209 is pending analysis. The EPSS model estimates a 2.89% probability of exploitation in the next 30 days.

How do I fix CVE-2019-12209?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-12209?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST