CVE-2023-22809
Published: 18 January 2023
In Sudo before 1.9.12p2, the sudoedit (aka -e) feature mishandles extra arguments passed in the user-provided environment variables (SUDO_EDITOR, VISUAL, and EDITOR), allowing a local attacker to append arbitrary entries to the list of files to process. This can lead to privilege escalation. Affected versions are 1.8.0 through 1.9.12.p1. The problem exists because a user-specified editor may contain a "--" argument that defeats a protection mechanism, e.g., an EDITOR='vim -- /path/to/extra/file' value.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
sudo Launchpad, Ubuntu, Debian |
bionic |
Released
(1.8.21p2-3ubuntu1.5)
|
| focal |
Released
(1.8.31-1ubuntu1.4)
|
|
| jammy |
Released
(1.9.9-1ubuntu2.2)
|
|
| kinetic |
Released
(1.9.11p3-1ubuntu1.1)
|
|
| lunar |
Released
(1.9.11p3-1ubuntu3)
|
|
| trusty |
Released
(1.8.9p5-1ubuntu1.5+esm7)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| upstream |
Released
(1.9.12p2)
|
|
| xenial |
Released
(1.8.16-0ubuntu1.10+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
|
Patches: upstream: https://www.sudo.ws/repos/sudo/rev/2ca90805f471 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |