CVE-2023-22809
Publication date 18 January 2023
Last updated 24 July 2024
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| sudo | ||
| 22.04 LTS jammy |
Fixed 1.9.9-1ubuntu2.2
|
|
| 20.04 LTS focal |
Fixed 1.8.31-1ubuntu1.4
|
|
| 18.04 LTS bionic |
Fixed 1.8.21p2-3ubuntu1.5
|
|
| 16.04 LTS xenial |
Fixed 1.8.16-0ubuntu1.10+esm1
|
|
| 14.04 LTS trusty |
Fixed 1.8.9p5-1ubuntu1.5+esm7
|
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Get Ubuntu ProSeverity score breakdown
| Parameter | Value |
|---|---|
| Base score |
7.8 · High
|
| 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 |
References
Related Ubuntu Security Notices (USN)
- USN-5811-1
- Sudo vulnerabilities
- 18 January 2023
- USN-5811-2
- Sudo vulnerability
- 18 January 2023
- USN-5811-3
- Sudo vulnerability
- 30 January 2023