CVE-2019-12209
Published: 4 June 2019
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.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
pam-u2f Launchpad, Ubuntu, Debian |
bionic |
Needed
|
| cosmic |
Ignored
(end of life)
|
|
| disco |
Ignored
(end of life)
|
|
| eoan |
Not vulnerable
(1.0.8-1)
|
|
| focal |
Not vulnerable
(1.0.8-1)
|
|
| groovy |
Not vulnerable
(1.0.8-1)
|
|
| hirsute |
Not vulnerable
(1.0.8-1)
|
|
| impish |
Not vulnerable
(1.0.8-1)
|
|
| jammy |
Not vulnerable
(1.0.8-1)
|
|
| kinetic |
Not vulnerable
(1.0.8-1)
|
|
| lunar |
Not vulnerable
(1.0.8-1)
|
|
| mantic |
Not vulnerable
(1.0.8-1)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(1.0.8)
|
|
| xenial |
Needed
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |