CVE-2022-29800
Published: 27 April 2022
A time-of-check-time-of-use (TOCTOU) race condition vulnerability was found in networkd-dispatcher. This flaw exists because there is a certain time between the scripts being discovered and them being run. An attacker can abuse this vulnerability to replace scripts that networkd-dispatcher believes to be owned by root with ones that are not.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
networkd-dispatcher Launchpad, Ubuntu, Debian |
bionic |
Released
(1.7-0ubuntu3.4)
|
| focal |
Released
(2.1-2~ubuntu20.04.2)
|
|
| impish |
Released
(2.1-2ubuntu0.21.10.1)
|
|
| jammy |
Released
(2.1-2ubuntu0.22.04.1)
|
|
| upstream |
Pending
(2.2.1)
|
|
|
Patches: upstream: https://gitlab.com/craftyguy/networkd-dispatcher/-/commit/2e226ee027bdc8022f0e10470318f89f25dc6133 upstream: https://gitlab.com/craftyguy/networkd-dispatcher/-/commit/41e1d0f123c1113de24bafa3f23359e647945173 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 4.7 |
| Attack vector | Local |
| Attack complexity | High |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | High |
| Availability impact | None |
| Vector | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N |
References
- https://www.helpnetsecurity.com/2022/04/27/cve-2022-29799-cve-2022-29800/
- https://www.microsoft.com/security/blog/2022/04/26/microsoft-finds-new-elevation-of-privilege-linux-vulnerability-nimbuspwn/
- https://ubuntu.com/security/notices/USN-5395-1
- https://www.cve.org/CVERecord?id=CVE-2022-29800
- NVD
- Launchpad
- Debian