#VU83260 Heap-based buffer overflow in exfatprogs - CVE-2023-45897

Vulnerability identifier: #VU83260

Vulnerability risk: Medium

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-45897

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
exfatprogs
Client/Desktop applications / Software for system administration

Vendor: exfatprogs

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when handling file names. A remote attacker can trick the victim to use the filesystem tools against a specially crafted file with an overly long file name, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

exfatprogs: 1.0.1 - 1.2.1

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External links
https://github.com/exfatprogs/exfatprogs/commit/22d0e43e8d24119cbfc6efafabb0dec6517a86c4
https://github.com/exfatprogs/exfatprogs/releases/tag/1.2.2
https://github.com/exfatprogs/exfatprogs/commit/4abc55e976573991e6a1117bb2b3711e59da07ae
https://github.com/exfatprogs/exfatprogs/commit/ec78688e5fb5a70e13df82b4c0da1e6228d3ccdf
https://dfir.ru/2023/11/01/cve-2023-45897-a-vulnerability-in-the-linux-exfat-userspace-tools/

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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.