#VU70697 Improper Authentication in SAML library for go - CVE-2022-41912

Vulnerability identifier: #VU70697

Vulnerability risk: High

CVSSv4.0: 8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2022-41912

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
SAML library for go
Universal components / Libraries / Libraries used by multiple products

Vendor: Ross Kinder

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error when processing SAML responses containing multiple Assertion elements. A remote attacker can bypass authentication process and gain unauthorized access to the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

SAML library for go: 0.1.0 - 0.4.8

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External links
https://github.com/crewjam/saml/commit/aee3fb1edeeaf1088fcb458727e0fd863d277f8b
https://github.com/crewjam/saml/security/advisories/GHSA-j2jp-wvqg-wc2g
https://packetstormsecurity.com/files/170356/crewjam-saml-Signature-Bypass.html

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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.