Information disclosure in Tinyproxy

1) Insecure Default Initialization of Resource

EUVDB-ID: #VU79737

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-40468

CWE-ID: CWE-1188 - Insecure Default Initialization of Resource

Exploit availability: No

Description

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

The vulnerability exists due to potential leak of left-over heap data if custom error page templates contain special non-standard variables. A remote attacker can gain access to sensitive information.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

tinyproxy: 1.11.0 - 1.11.1

CPE2.3

• cpe:2.3:a:tinyproxy:tinyproxy:1.11.0:*:*:*:*:*:*:*
• cpe:2.3:a:tinyproxy:tinyproxy:1.11.1:*:*:*:*:*:*:*

External links

https://github.com/tinyproxy/tinyproxy/issues/457
https://github.com/tinyproxy/tinyproxy/blob/84f203fb1c4733608c7283bbe794005a469c4b00/src/reqs.c#L346
https://github.com/tinyproxy/tinyproxy/issues/457#issuecomment-1264176815
https://security.gentoo.org/glsa/202305-27

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.