CVE-2019-12210

Vulnerability 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 Score

Affected Products

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/2019/06/05/1ExploitMailing ListThird Party Advisory
• https://developers.yubico.com/pam-u2f/Release_Notes.htmlRelease NotesVendor Advisory
• https://github.com/Yubico/pam-u2f/commit/18b1914e32b74ff52000f10e97067e841e5fff6PatchThird 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/2019/06/05/1ExploitMailing ListThird Party Advisory
• https://developers.yubico.com/pam-u2f/Release_Notes.htmlRelease NotesVendor Advisory
• https://github.com/Yubico/pam-u2f/commit/18b1914e32b74ff52000f10e97067e841e5fff6PatchThird Party Advisory