Vulnerability identifier: #VU66066

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-32148

CWE-ID: CWE-254

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Go programming language
Universal components / Libraries / Scripting languages

Vendor: Google

Description

The vulnerability allows a remote attacker to bypass certain security restrictions.

The vulnerability exists due to unexpected behavior of httputil.ReverseProxy.ServeHTTP. When the method is called with a Request.Header map containing a nil value for the X-Forwarded-For header, ReverseProxy would set the client IP as the value of the X-Forwarded-For header, contrary to its documentation.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Go programming language: 1.18 - 1.18.3, 1.17 - 1.17.11

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External links
http://bugzilla.redhat.com/show_bug.cgi?id=2107383

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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.