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No exploitation reportedFix available

CVE-2019-12209

No exploitation reported by the sources we read.

  • Published2019-06-04
  • WeaknessCWE-59

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2019-06-0421:29CVE publishedNVD

Versions per branch

NVD
Yubico pam-u2f
BranchAffectedFixed in
1.0= 1.0.7no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • libu2f-hostSUSE:Linux Enterprise Server for SAP Applications 12 SP4all versions · fixed in 1.1.6-3.5.1
  • libu2f-hostSUSE:Linux Enterprise Server 12 SP4all versions · fixed in 1.1.6-3.5.1
  • libu2f-hostSUSE:Linux Enterprise Module for Basesystem 15 SP1all versions · fixed in 1.1.6-3.6.1
  • libu2f-hostSUSE:Linux Enterprise Module for Basesystem 15all versions · fixed in 1.1.6-3.6.1
  • libu2f-hostSUSE:Linux Enterprise Desktop 12 SP4all versions · fixed in 1.1.6-3.5.1
  • libu2f-hostopenSUSE:Leap 15.1all versions · fixed in 1.1.6-lp151.2.6.1
  • libu2f-hostopenSUSE:Leap 15.0all versions · fixed in 1.1.6-lp150.10.1
  • pam_u2fSUSE:Linux Enterprise Server for SAP Applications 12 SP4all versions · fixed in 1.0.8-3.3.1

10 more package ranges on OSV.dev

Vendor advisories

  • CVE-2019-12209 Red Hat Product Security

    pam-u2f: insecure debug file handling leads to information disclosure

Full record on NVD

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2019-06-04
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-cf2r-5chq-jmm8

Frequently asked questions

What is CVE-2019-12209?

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.

Is CVE-2019-12209 actively exploited?

Active exploitation of CVE-2019-12209 has not been confirmed. Its EPSS score was 2.8% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-12209?

CVE-2019-12209 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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