CVE-2022-28321
Published: 19 September 2022
The Linux-PAM package before 1.5.2-6.1 for openSUSE Tumbleweed allows authentication bypass for SSH logins. The pam_access.so module doesn't correctly restrict login if a user tries to connect from an IP address that is not resolvable via DNS. In such conditions, a user with denied access to a machine can still get access. NOTE: the relevance of this issue is largely limited to openSUSE Tumbleweed and openSUSE Factory; it does not affect Linux-PAM upstream.
Notes
| Author | Note |
|---|---|
| rodrigo-zaiden | it was stated that upstream is not affected, so, Ubuntu might not be affected as well, it worth checking |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
pam Launchpad, Ubuntu, Debian |
bionic |
Released
(1.1.8-3.6ubuntu2.18.04.4)
|
| focal |
Released
(1.3.1-5ubuntu4.4)
|
|
| jammy |
Released
(1.4.0-11ubuntu2.1)
|
|
| kinetic |
Released
(1.5.2-2ubuntu1.1)
|
|
| lunar |
Needs triage
|
|
| trusty |
Released
(1.1.8-1ubuntu2.2+esm1)
|
|
| upstream |
Needs triage
|
|
| xenial |
Released
(1.1.8-3.2ubuntu2.3+esm2)
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 9.8 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28321
- https://www.suse.com/security/cve/CVE-2022-28321.html
- http://download.opensuse.org/source/distribution/openSUSE-current/repo/oss/src/
- https://github.com/linux-pam/linux-pam/pull/447
- https://ubuntu.com/security/notices/USN-5825-1
- NVD
- Launchpad
- Debian