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Vulnerability Details : 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.
Publish Date : 2019-06-04 Last Update Date : 2019-06-05
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- CVSS Scores & Vulnerability Types

CVSS Score
5.0
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Obtain Information
CWE ID 200

- Products Affected By CVE-2019-12209

# Product Type Vendor Product Version Update Edition Language
1 Application Yubico Pam-u2f 1.0.7 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Yubico Pam-u2f 1

- References For CVE-2019-12209

http://www.openwall.com/lists/oss-security/2019/06/05/1
MLIST [oss-security] 20190605 pam-u2f: CVE-2019-12210: debug_file file descriptor leak, CVE-2019-12209: symlink attack on u2f_keys leading to possible information leak
https://developers.yubico.com/pam-u2f/Release_Notes.html CONFIRM
https://github.com/Yubico/pam-u2f/commit/7db3386fcdb454e33a3ea30dcfb8e8960d4c3aa3 CONFIRM

- Metasploit Modules Related To CVE-2019-12209

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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