#VU84984 Path traversal in Xreader - CVE-2023-44451

Vulnerability identifier: #VU84984

Vulnerability risk: High

CVSSv4.0: 7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2023-44451

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Xreader
Client/Desktop applications / Other client software

Vendor: Linux Mint

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. A remote attacker can trick a victim to open a specially crafted EPUB file and read arbitrary files on the system, leading to arbitrary code execution.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Xreader: 1.0.1 - 3.8.4

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External links
https://www.zerodayinitiative.com/advisories/ZDI-23-1835/
https://github.com/linuxmint/xreader/commit/141f1313745b9cc73670df51ac145165efcbb14a

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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.