CVE-2019-12210
This can leak sensitive information and also, if written to, be used to fill the disk or plant misinformation.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.06%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.0
- 8.1 HIGHCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- EPSS
- 2.06% probability · 81th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- yubico/pam-u2f
- Source
- cve@mitre.org
EPSS 2.1% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.