Vulnerability identifier: #VU8058

Vulnerability risk: Low

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

CVE-ID: CVE-2017-0902

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

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

Vendor: Ruby

Description
The vulnerability allows a remote attacker to hijack the target user's session.

The weakness exists due to improper access control. A remote attacker can hijack DNS sessions.

Mitigation
Update to version 2.6.13.

Vulnerable software versions

RubyGems: 2.2.0 - 2.4.1

---

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

---

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.