What’s Vulnerable › Vulnerabilities

CVE-2017-0902

• Severity: high (CVSS 8.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2017-08-31 · updated 2026-06-17
• Weakness: CWE-350

Description

RubyGems version 2.6.12 and earlier is vulnerable to a DNS hijacking vulnerability that allows a MITM attacker to force the RubyGems client to download and install gems from a server that the attacker controls.

Affected products

• Canonical Ubuntu Linux: 14.04, 16.04, 17.10
• Debian Linux: 8.0, 9.0
• RedHat Enterprise Linux Desktop: 7.0
• RedHat Enterprise Linux Server: 7.0
• RedHat Enterprise Linux Server Aus: 7.4, 7.6
• RedHat Enterprise Linux Server Eus: 7.4, 7.5, 7.6
• RedHat Enterprise Linux Server Tus: 7.4, 7.6
• RedHat Enterprise Linux Workstation: 7.0
• rubygems: through 2.6.12

References

• http://blog.rubygems.org/2017/08/27/2.6.13-released.html
• http://www.securityfocus.com/bid/100586
• http://www.securitytracker.com/id/1039249
• https://access.redhat.com/errata/RHSA-2017:3485
• https://access.redhat.com/errata/RHSA-2018:0378
• https://access.redhat.com/errata/RHSA-2018:0583
• https://access.redhat.com/errata/RHSA-2018:0585
• https://github.com/rubygems/rubygems/commit/8d91516fb7037ecfb27622f605dc40245e0f8d32
• https://hackerone.com/reports/218088
• https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
• https://security.gentoo.org/glsa/201710-01
• https://usn.ubuntu.com/3553-1/

Get alerted when CVE-2017-0902 or the next vulnerability affects your stack