CVE-2018-1000078

Description

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Cross Site Scripting (XSS) vulnerability in gem server display of homepage attribute that can result in XSS. This attack appear to be exploitable via the victim must browse to a malicious gem on a vulnerable gem server. This vulnerability appears to have been fixed in 2.7.6.

How to fix CVE-2018-1000078

To remediate CVE-2018-1000078, upgrade the affected package to a fixed version below.

• —upgrade to 9.1.17.0-1 or later
• —upgrade to 3.2.0~rc.1-1 or later
• —upgrade to 9.1.16.0 or later
• —upgrade to 2.7.6 or later

Is CVE-2018-1000078 being exploited?

Low — EPSS is 0.8%, meaning exploitation activity has not been observed at scale.

Affected packages (4)

• from 0, < 9.1.17.0-1
• from 0, < 3.2.0~rc.1-1
• from 0, < 9.1.16.0
• from 0, < 2.7.6

CVSS scores

References (22)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2018-1000078
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2018-1000078
• WEBblog.rubygems.org/2018/02/15/2.7.6-released.html
• WEBlists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html