CVE-2024-10963
Publication date 7 November 2024
Last updated 7 January 2025
Ubuntu priority
A flaw was found in pam_access, where certain rules in its configuration file are mistakenly treated as hostnames. This vulnerability allows attackers to trick the system by pretending to be a trusted hostname, gaining unauthorized access. This issue poses a risk for systems that rely on this feature to control who can access certain services or terminals.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| pam | 24.10 oracular |
Vulnerable
|
| 24.04 LTS noble |
Vulnerable
|
|
| 22.04 LTS jammy |
Not affected
|
|
| 20.04 LTS focal |
Not affected
|
|
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial |
Not affected
|
|
| 14.04 LTS trusty | Ignored end of ESM support, was deferred [2024-11-19] |
Notes
mdeslaur
Introduced in 1.5.3 by https://github.com/linux-pam/linux-pam/pull/447 The fix below simply introduces a new option called "nodns" that reverts behaviour to pre 1.5.3 and will safely allow tty/service names in access.conf
Patch details
| Package | Patch details |
|---|---|
| pam |
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
7.4 · High
|
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |