Man-in-the-Middle (MitM) attack in IBM Rational Build Forge

1) Man-in-the-Middle (MitM) attack

EUVDB-ID: #VU57487

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-2021-35550

CWE-ID: CWE-300 - Channel Accessible by Non-Endpoint ('Man-in-the-Middle')

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

The vulnerability exists due to the JSSE component in Oracle GraalVM Enterprise Edition offers cipher suites in the wrong way, which causes weaker cipher suites to be offered ahead of the strong ones. A remote non-authenticated attacker can exploit this vulnerability to gain access to sensitive information.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Rational Build Forge: 8.0.0.0 - 8.0.0.22

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_rational_build_forge:8.0.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:ibm_corporation:ibm_rational_build_forge:8.0.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:ibm_corporation:ibm_rational_build_forge:8.0.0.2:*:*:*:*:*:*:*

External links

https://www.ibm.com/support/pages/node/6985007

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.