CVE-2017-0902 RubyGems has Origin Validation Error vulnerability

What is CVE-2017-0902?

CVE-2017-0902 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 31 Aug 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-346, CWE-350

Which versions are affected by CVE-2017-0902?

2 open source packages ship an affected version, including rubygems-update. It affects 9 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus, Redhat Enterprise Linux Server Eus and 3 more.

How do I fix CVE-2017-0902?

Upgrade rubygems-update to 2.6.13 or later.

Is CVE-2017-0902 being exploited?

There is no known exploitation of CVE-2017-0902 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2017-0902, CLEANSTART-2026-FO70929, DEBIAN-CVE-2017-0902, GHSA-73w7-6w9g-gc8w, UBUNTU-CVE-2017-0902.