Vulnerability identifier: #VU8055

Vulnerability risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-0900

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
RubyGems
Universal components / Libraries / Libraries used by multiple products

Vendor: Ruby

Description
The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists due to insufficient validation of user-supplied input. A local attacker can supply a specially crafted 'query' command and cause the service to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation
Update to version 2.6.13.

Vulnerable software versions

RubyGems: 2.2.0 - 2.4.1

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External links
http://www.ruby-lang.org/en/news/2017/08/29/multiple-vulnerabilities-in-rubygems/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.