#VU25635 Improper control of interaction frequency in MISP - CVE-2020-8891

Vulnerability identifier: #VU25635

Vulnerability 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-2020-8891

CWE-ID: CWE-799

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MISP
Web applications / CMS

Vendor: misp-project.org

Description

The vulnerability allows a remote attacker to perform a brute-force attack.

The vulnerability exists due to software does not canonicalize usernames when trying to block a brute-force series of invalid requests.A remote attacker can bypass implemented security mechanisms and perform a brute-force attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

MISP: 2.4.51 - 2.4.120

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External links
https://github.com/MISP/MISP/commit/934c82819237b4edf1da64587b72a87bec5dd520
https://github.com/MISP/MISP/commit/c1a0b3b2809b21b4df8c1efbc803aff700e262c3
https://github.com/MISP/MISP/compare/v2.4.120...v2.4.121

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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.