Spoofing attack in UnRAR



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2024-33899
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 UnRar
Client/Desktop applications / Software for archiving

Vendor RARLAB

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Input validation error

EUVDB-ID: #VU92077

Risk: Low

CVSSv4.0: 0.2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-33899

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service or spoofing attack.

The vulnerability exists due to insufficient validation of ANSI escape sequences within the CLI interface. A remote attacker can pass specially crafted input via CLI and spoof the archive output or perform a denial of service (DoS) attack.

Note, the vulnerability affects Linux and Unix installations only.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

UnRar: 0.0.1 - 6.24

CPE2.3 External links

https://www.rarlab.com/rarnew.htm
https://sdushantha.medium.com/ansi-escape-injection-vulnerability-in-winrar-a2cbfac4b983


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.



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