Vulnerability identifier: #VU84986

Vulnerability risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2023-44452

CWE-ID: CWE-20

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 execute arbitrary code on the system.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can trick a victim to open a specially crafted CBT file and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Xreader: 1.0.1 - 3.8.4

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External links
http://www.zerodayinitiative.com/advisories/ZDI-23-1836/
http://github.com/linuxmint/xreader/commit/cd678889ecfe4e84a5cbcf3a0489e15a5e2e3736

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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.