#VU77642 Out-of-bounds write in ReadyMedia (formerly MiniDLNA) - CVE-2023-33476

Vulnerability identifier: #VU77642

Vulnerability risk: High

CVSSv4.0: 8.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2023-33476

CWE-ID: CWE-787

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
ReadyMedia (formerly MiniDLNA)
Server applications / Other server solutions

Vendor: Jakub Vrána

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when handling HTTP requests using chunked transport encoding. A remote attacker can send a specially crafted HTTP request to the server, trigger an out-of-bounds write and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

ReadyMedia (formerly MiniDLNA): 1.1.5 - 1.3.2

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External links
https://sourceforge.net/projects/minidlna/
https://sourceforge.net/p/minidlna/git/ci/9bd58553fae5aef3e6dd22f51642d2c851225aec/
https://blog.coffinsec.com/0day/2023/05/31/minidlna-heap-overflow-rca.html
https://lists.debian.org/debian-lts-announce/2023/06/msg00027.html
https://www.debian.org/security/2023/dsa-5434

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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. However, proof of concept for this vulnerability is available.