CVE-2023-30630
Publication date 13 April 2023
Last updated 24 July 2024
Ubuntu priority
Dmidecode before 3.5 allows -dump-bin to overwrite a local file. This has security relevance because, for example, execution of Dmidecode via Sudo is plausible.
Mitigation
Do not configure sudoers file to allow running dmidecode with elevated privileges.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| cpu-x | 24.10 oracular |
Needs evaluation
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| 18.04 LTS bionic | Not in release | |
| 16.04 LTS xenial | Ignored end of standard support | |
| 14.04 LTS trusty | Ignored end of standard support | |
| dmidecode | 24.10 oracular |
Not affected
|
| 24.04 LTS noble |
Not affected
|
|
| 22.04 LTS jammy |
Vulnerable
|
|
| 20.04 LTS focal |
Vulnerable
|
|
| 18.04 LTS bionic |
Vulnerable
|
|
| 16.04 LTS xenial |
Needs evaluation
|
|
| 14.04 LTS trusty | Ignored end of ESM support, was needs-triage |
Notes
rodrigo-zaiden
cpu-x embedds dmidecode source
mdeslaur
This CVE relies on an improbable non-default configuration of allowing an unprivileged user to run demidecode under sudo with a specific insecure configuration in the sudoers file. Using dmidecode in such a manner is no different than allowing any other tool to unexpectedly run with elevated privileges. Setting priority to low. The upstream commits listed below only prevent overwriting a file as root, but still allows creating arbitrary files as root so using dmidecode with elevated privileges via sudoers is still unsafe.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
7.1 · High
|
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |