#VU26316 Improper Authentication in caldera - CVE-2020-10807

Vulnerability identifier: #VU26316

Vulnerability risk: High

CVSSv4.0: 8.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2020-10807

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
caldera
Server applications / Frameworks for developing and running applications

Vendor: The MITRE Corporation and MIT KIT

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in a forged "localhost" string in the HTTP Host header. A remote attacker can bypass authentication process and gain unauthorized access to the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

caldera: 2.0.0 - 2.6.4

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External links
https://github.com/mitre/caldera/compare/2.6.4...2.6.5
https://github.com/mitre/caldera/issues/1405
https://github.com/mitre/caldera/pull/1407
https://github.com/mitre/caldera/releases/tag/2.6.5

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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. However, proof of concept for this vulnerability is available.