#VU62689 Path traversal in networkd-dispatcher - CVE-2022-29799

Vulnerability identifier: #VU62689

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-29799

CWE-ID: CWE-22

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
networkd-dispatcher
Universal components / Libraries / Libraries used by multiple products

Vendor: clayton craft

Description

The vulnerability allows a local user to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in OperationalState or the AdministrativeState. Since the states are used to build the script path, it is possible that a state would contain directory traversal patterns (e.g. “../../”) to escape from the “/etc/networkd-dispatcher” base directory. A local user can abuse this vulnerability to bypass implemented security restrictions.

Mitigation
Install update from vendor's website.

Vulnerable software versions

networkd-dispatcher: 1.0 - 2.1

---

External links
https://gitlab.com/craftyguy/networkd-dispatcher/-/tags/2.2
https://www.microsoft.com/security/blog/2022/04/26/microsoft-finds-new-elevation-of-privilege-linux-vulnerability-nimbuspwn/

---

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.