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CVE-2019-12209 Details

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

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00012.html	CVE
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00018.html	CVE
https://developers.yubico.com/pam-u2f/Release_Notes.html	CVE	Release NotesVendor Advisory
https://github.com/Yubico/pam-u2f/commit/7db3386fcdb454e33a3ea30dcfb8e8960d4c3aa3	CVE	PatchThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5FOR4ADC356JPCHAJI5UXZORLC3VNBPS/	CVE
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZCGU6UQLI3ZTW3UYCTMQW7VDL5M4LCWR/	CVE
http://www.openwall.com/lists/oss-security/2019/06/05/1	CVE	ExploitMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00012.html	[email protected]
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00018.html	[email protected]
https://developers.yubico.com/pam-u2f/Release_Notes.html	[email protected]	Release NotesVendor Advisory
https://github.com/Yubico/pam-u2f/commit/7db3386fcdb454e33a3ea30dcfb8e8960d4c3aa3	[email protected]	PatchThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5FOR4ADC356JPCHAJI5UXZORLC3VNBPS/	[email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZCGU6UQLI3ZTW3UYCTMQW7VDL5M4LCWR/	[email protected]
http://www.openwall.com/lists/oss-security/2019/06/05/1	[email protected]	ExploitMailing ListThird Party Advisory

see all 14 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-59	Improper Link Resolution Before File Access ('Link Following')	[email protected]

Affected Products

Product	Versions
yubico pam-u2f	1.0.7
CPE cpe:2.3:a:yubico:pam-u2f:1.0.7:::::::* Remediation No remediation found in references.

Change History

11 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Nov 7, 2023	CVE Modified	[email protected]
Aug 24, 2020	CWE Remap	[email protected]
Aug 13, 2019	CVE Modified	[email protected]
Jul 19, 2019	CVE Modified	[email protected]
Jul 19, 2019	CVE Modified	[email protected]
Jun 20, 2019	CVE Modified	[email protected]
Jun 5, 2019	Initial Analysis	[email protected]
Jun 5, 2019	CVE Modified	[email protected]