Cross-site scripting in RubyGems - CVE-2019-8325

Vulnerability identifier: #VU20190

CSH Severity: Low

CVSS v4: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2019-8325

CWE-ID: CWE-79

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform XSS attacks.

The vulnerability exists due to improper input validation when processing alerts in the Gem::CommandManager#run. A remote attacker can inject and execute arbitrary HTML or JavaScript code.

RubyGems
Amazon Linux AMI
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for Power
Opensuse
Fedora
EMC Integrated Data Protection Appliance
ruby (Red Hat package)
ruby (Alpine package)
rh-ruby24-ruby (Red Hat package)
rh-ruby25-ruby (Red Hat package)
ruby
Dell EMC Data Protection Search

Install updates from vendor's website.

RubyGems - addressed in versions 2.7.9, 3.0.2
EMC Integrated Data Protection Appliance - update to 2.7.1
ruby (Red Hat package) - update to 2.0.0.648-37.el7_4
ruby (Alpine package) - update to 2.4.6-r0
Dell EMC Data Protection Search - update to 19.6.0
rh-ruby24-ruby (Red Hat package) - addressed in versions 2.4.6-92.el6, 2.4.6-92.el7
rh-ruby25-ruby (Red Hat package) - update to 2.5.5-7.el7
ruby - addressed in versions 2.5.5-101.fc29, 2.5.5-108.fc28

• http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
• https://hackerone.com/reports/317353

• Amazon Linux AMI update for ruby20, ruby21, ruby24
• Multiple vulnerabilities in RubyGems
• OpenSUSE Linux update for ruby-bundled-gems-rpmhelper, ruby2.5
• Red Hat update for ruby
• Red Hat Enterprise Linux 8 update for the ruby:2.5 module
• Red Hat Enterprise Linux 7 update for ruby
• Cross-site scripting in ruby (Alpine package)
• Multiple vulnerabilities in Dell EMC Integrated Data Protection Appliance
• Multiple vulnerabilities in Dell EMC Data Protection Search
• Red Hat Software Collections update for rh-ruby25-ruby
• Red Hat Software Collections update for rh-ruby24-ruby
• Fedora 29 update for ruby
• Fedora 28 update for ruby