#VU79899 Information disclosure in Tuleap Authentication - CVE-2023-40343

Vulnerability identifier: #VU79899

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-2023-40343

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Tuleap Authentication
Web applications / Modules and components for CMS

Vendor: Jenkins

Description

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

The vulnerability exists due to the affected application does not use a constant-time comparison when checking whether two authentication tokens are equal. A remote attacker can use statistical methods to obtain a valid authentication token.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Tuleap Authentication: 1.0.0 - 1.1.20

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External links
https://jenkins.io/security/advisory/2023-08-16/

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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.