Vulnerability Monitor

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CVE-2012-2126

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.

Security Impact Summary

CVE-2012-2126 is a security vulnerability that . Impacting 3 products from rubygems, from redhat, from canonical organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2013, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2013-10-01T17:55:03.367

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 4.3 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:P/A:N

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Primary
CWE-310

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	rubygems	rubygems	≤ 1.8.22	Yes
Application	rubygems	rubygems	1.8.0	Yes
Application	rubygems	rubygems	1.8.1	Yes
Application	rubygems	rubygems	1.8.2	Yes
Application	rubygems	rubygems	1.8.3	Yes
Application	rubygems	rubygems	1.8.4	Yes
Application	rubygems	rubygems	1.8.5	Yes
Application	rubygems	rubygems	1.8.6	Yes
Application	rubygems	rubygems	1.8.7	Yes
Application	rubygems	rubygems	1.8.8	Yes
Application	rubygems	rubygems	1.8.9	Yes
Application	rubygems	rubygems	1.8.10	Yes
Application	rubygems	rubygems	1.8.11	Yes
Application	rubygems	rubygems	1.8.12	Yes
Application	rubygems	rubygems	1.8.13	Yes
Application	rubygems	rubygems	1.8.14	Yes
Application	rubygems	rubygems	1.8.15	Yes
Application	rubygems	rubygems	1.8.16	Yes
Application	rubygems	rubygems	1.8.17	Yes
Application	rubygems	rubygems	1.8.18	Yes
Application	rubygems	rubygems	1.8.19	Yes
Application	rubygems	rubygems	1.8.20	Yes
Application	rubygems	rubygems	1.8.21	Yes
Application	redhat	openshift	1.2.2	No
Operating System	canonical	ubuntu_linux	12.04	No

References

http://rhn.redhat.com/errata/RHSA-2013-1203.html ([email protected])
http://rhn.redhat.com/errata/RHSA-2013-1441.html ([email protected])
http://rhn.redhat.com/errata/RHSA-2013-1852.html ([email protected])
http://secunia.com/advisories/55381 ([email protected])
http://www.openwall.com/lists/oss-security/2012/04/20/24 ([email protected])
http://www.ubuntu.com/usn/USN-1582-1/ ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=814718 ([email protected])
https://github.com/rubygems/rubygems/blob/1.8/History.txt Patch, Vendor Advisory ([email protected])
http://rhn.redhat.com/errata/RHSA-2013-1203.html (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2013-1441.html (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2013-1852.html (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/55381 (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2012/04/20/24 (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-1582-1/ (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=814718 (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/rubygems/rubygems/blob/1.8/History.txt Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For rubygems's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.