#VU21553 Improper Certificate Validation in Codefresh Integration - CVE-2019-10381

Vulnerability identifier: #VU21553

Vulnerability risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-10381

CWE-ID: CWE-295

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Codefresh Integration
Web applications / Modules and components for CMS

Vendor: Jenkins

Description
The vulnerability allows a remote attacker to perform a man-in-the-middle (MiTM) attack.

The vulnerability exists due to the affected software unconditionally disables SSL/TLS certificate validation for the entire Jenkins master JVM. A remote attacker can supply a specially crafted SSL/TLS certificate, conduct man-in-the-middle attacks and connect to a targeted system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Codefresh Integration: 1.0 - 1.8

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External links
https://www.openwall.com/lists/oss-security/2019/08/07/1
https://jenkins.io/security/advisory/2019-08-07/#SECURITY-931

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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.