CVE-2019-12209

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Summary

CVECVE-2019-12209
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-06-04 21:29:00 UTC
Updated2023-11-07 03:03:00 UTC
DescriptionYubico 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.

Risk And Classification

Problem Types: CWE-59

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Yubico Pam-u2f 1.0.7 All All All
Application Yubico Pam-u2f 1.0.7 All All All

References

ReferenceSourceLinkTags
Drop privileges by default when opening user-related files · Yubico/pam-u2f@7db3386 · GitHub CONFIRM github.com Patch, Third Party Advisory
[SECURITY] Fedora 30 Update: pam-u2f-1.0.8-1.fc30 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 30 Update: pam-u2f-1.0.8-1.fc30 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
[security-announce] openSUSE-SU-2019:1708-1: moderate: Security update f SUSE lists.opensuse.org
[security-announce] openSUSE-SU-2019:1725-1: moderate: Security update f SUSE lists.opensuse.org
oss-security - pam-u2f: CVE-2019-12210: debug_file file descriptor leak, CVE-2019-12209: symlink attack on u2f_keys leading to possible information leak MLIST www.openwall.com Exploit, Mailing List, Third Party Advisory
[SECURITY] Fedora 29 Update: pam-u2f-1.0.8-1.fc29 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 29 Update: pam-u2f-1.0.8-1.fc29 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
Release Notes CONFIRM developers.yubico.com Release Notes, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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