#VU63635 Information disclosure in Puma - CVE-2022-23634

Vulnerability identifier: #VU63635

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-23634

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Puma
Server applications / Web servers

Vendor: Evan Phoenix

Description

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

The vulnerability exists due to puma may not always call close on the response body. A remote attacker can gain unauthorized access to sensitive information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Puma: 4.0.0 - 4.0.1, 4.1.0 - 4.1.1, 4.2.0 - 4.2.1, 4.3.0 - 4.3.10, 5.0.0 - 5.0.4, 5.1.0 - 5.1.1, 5.2.0 - 5.2.2, 5.3.0 - 5.3.2, 5.4.0, 5.5.0 - 5.5.2, 5.6.0 - 5.6.1

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External links
https://github.com/puma/puma/security/advisories/GHSA-rmj8-8hhh-gv5h
https://github.com/puma/puma/commit/b70f451fe8abc0cff192c065d549778452e155bb
https://groups.google.com/g/ruby-security-ann/c/FkTM-_7zSNA/m/K2RiMJBlBAAJ?utm_medium=email&utm_source=footer&pli=1
https://github.com/advisories/GHSA-rmj8-8hhh-gv5h
https://github.com/advisories/GHSA-wh98-p28r-vrc9
https://www.debian.org/security/2022/dsa-5146

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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.