#VU93459 Use-after-free in BusyBox - CVE-2023-42364

Vulnerability identifier: #VU93459

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-42364

CWE-ID: CWE-416

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 a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error within the evaluate() function in awk.c. A remote attacker can trick the victim to pass a specially crafted awk pattern to the application and crash it.

Mitigation
Install update from vendor's website.

Vulnerable software versions

BusyBox: 1.00 - 1.36.1

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External links
https://bugs.busybox.net/show_bug.cgi?id=15868

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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.