CVE-2019-12210

Name: CVE-2019-12210
Creator: NVD / NIST
Published: 2019-06-04T21:29:00.827+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.87%

Last modified Jun 17, 2026

CVE-2019-12210 is a vulnerability of currently unknown severity. In Yubico pam-u2f 1.0.7, when configured with debug and a custom debug log file is set using debug_file, that file descriptor is not closed when a new process is spawned. This leads to the file descriptor being inherited into the child process; the child process can then read from and write to it. EPSS estimates a 1.87% chance of exploitation in the next 30 days.

Description

In Yubico pam-u2f 1.0.7, when configured with debug and a custom debug log file is set using debug_file, that file descriptor is not closed when a new process is spawned. This leads to the file descriptor being inherited into the child process; the child process can then read from and write to it. This can leak sensitive information and also, if written to, be used to fill the disk or plant misinformation.

Metrics

EPSS Probability

1.87%

76.7th percentile

Probability of exploitation in the next 30 days. Learn more

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/18b1914e32b74ff52000f10e97067e841e5fff62Patch, Third Party Advisory
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/18b1914e32b74ff52000f10e97067e841e5fff62Patch, Third Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2019-12210?

How severe is CVE-2019-12210?

Severity scoring for CVE-2019-12210 is pending analysis. The EPSS model estimates a 1.87% probability of exploitation in the next 30 days.

How do I fix CVE-2019-12210?

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-2019-12210?

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

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Source: NVD / NIST