CVE-2012-2126

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-10-01 · updated 2026-06-16
Weakness: CWE-310

Description

RubyGems before 1.8.23 does not verify an SSL certificate, which allows remote attackers to modify a gem during installation via a man-in-the-middle attack.

Affected products

rubygems: through 1.8.22; 1.8.0, 1.8.1, 1.8.2, 1.8.3, 1.8.4, 1.8.5 (+16)

References

http://rhn.redhat.com/errata/RHSA-2013-1203.html
http://rhn.redhat.com/errata/RHSA-2013-1441.html
http://rhn.redhat.com/errata/RHSA-2013-1852.html
http://secunia.com/advisories/55381
http://www.openwall.com/lists/oss-security/2012/04/20/24
http://www.ubuntu.com/usn/USN-1582-1/
https://bugzilla.redhat.com/show_bug.cgi?id=814718
https://github.com/rubygems/rubygems/blob/1.8/History.txt
http://rhn.redhat.com/errata/RHSA-2013-1203.html
http://rhn.redhat.com/errata/RHSA-2013-1441.html
http://rhn.redhat.com/errata/RHSA-2013-1852.html
http://secunia.com/advisories/55381

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