Vulnerability identifier: #VU80392

Vulnerability risk: Medium

CVSSv3.1: 4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:U/RL:U/RC:C]

CVE-ID: CVE-2023-39810

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
BusyBox
Universal components / Libraries / Software for developers

Vendor: busybox.net

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences within the cpio command. A remote attacker can trick the victim to open a specially crafted archive and overwrite arbitrary files on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

BusyBox: 1.33.0 - 1.33.2

---

External links
http://www.pentagrid.ch/en/blog/busybox-cpio-directory-traversal-vulnerability/

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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