Regular Expression Denial of Service in Cleo



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-42966
CWE-ID CWE-185
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 cleo
Other software / Other software solutions

Vendor sdispater (Sébastien Eustace)

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Incorrect Regular Expression

EUVDB-ID: #VU69494

Risk: Medium

CVSSv4.0: 7.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2022-42966

CWE-ID: CWE-185 - Incorrect Regular Expression

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient input validation when processing regular expressions in the Table.set_rows method. A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

cleo: 1.0.0a5

CPE2.3 External links

https://research.jfrog.com/vulnerabilities/cleo-redos-xray-257186/
https://github.com/advisories/GHSA-2p9h-ccw7-33gf


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.



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