Information disclosure in WinRAR

1) Out-of-bounds read

EUVDB-ID: #VU71727

Risk: Low

CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-43650

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition when processing .zip files. A remote attacker can create a specially crafted .zip archive, trick the victim into opening it, trigger an out-of-bounds read error and read contents of memory on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

WinRAR: 6.00 - 6.20 beta 2

CPE2.3

• cpe:2.3:a:rarlab:winrar:6.00:*:*:*:*:*:*:*
• cpe:2.3:a:rarlab:winrar:6.01:beta 1:*:*:*:*:*:*
• cpe:2.3:a:rarlab:winrar:6.01:*:*:*:*:*:*:*

External links

https://www.zerodayinitiative.com/advisories/ZDI-23-092/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to open a a specially crafted archive.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.