Vulnerability identifier: #VU80194

Vulnerability risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-33551

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
erofs-utils
Universal components / Libraries / Libraries used by multiple products

Vendor: kernel.org

Description

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

The vulnerability exists due to a boundary error within the erofsfsck_dirent_iter() function in fsck/main.c. A remote attacker can trick the victim to use a specially crafted filesystem image to 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 update from vendor's website.

Vulnerable software versions

erofs-utils: 1.0 - 1.6

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External links
http://github.com/lometsj/blog_repo/issues/2
http://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs-utils.git/patch/?id=27aeef179bf17d5f1d98f827e93d24839a6d4176

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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.