Remote code execution in RubyGems

1) Input validation error

EUVDB-ID: #VU54082

Risk: Medium

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: N/A

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input when processing platform and new line characters. A remote attacker can pass specially crafted input to the application and execute arbitrary code.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

RubyGems: 3.2.0 - 3.2.19

CPE2.3

• cpe:2.3:a:ruby:rubygems:3.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:ruby:rubygems:3.2.1:*:*:*:*:*:*:*
• cpe:2.3:a:ruby:rubygems:3.2.2:*:*:*:*:*:*:*

External links

https://github.com/rubygems/rubygems/releases/tag/v3.2.20
https://github.com/rubygems/rubygems/pull/4667

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.