What is CVE-2011-4121?

CVE-2011-4121 refers to a vulnerability in the OpenSSL extension of Ruby (Git trunk) versions after 2011-09-01 up to 2011-11-03.

What is the severity of CVE-2011-4121?

CVE-2011-4121 has a severity level of critical with a severity value of 9.

How does CVE-2011-4121 impact services?

CVE-2011-4121 can be used by a remote attacker to bypass or corrupt the integrity of services that rely on strong private RSA key generation.

Which software versions are affected by CVE-2011-4121?

CVE-2011-4121 affects Ruby (Git trunk) versions after 2011-09-01 up to 2011-11-03, as well as Ruby 1.8.7.334 and Ruby 1.9.1.

Where can I find more information about CVE-2011-4121?

You can find more information about CVE-2011-4121 at the following references: [Debian Security Tracker](https://security-tracker.debian.org/tracker/CVE-2011-4121), [Red Hat Bugzilla](https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4121), [Red Hat CVE Database](https://access.redhat.com/security/cve/cve-2011-4121).

Vulnerability/
CVE-2011-4121

critical

9.8

CWE

326

26/11/2019

7/8/2024

CVE-2011-4121: Weak Encryption

First published: Tue Nov 26 2019(Updated: )

The OpenSSL extension of Ruby (Git trunk) versions after 2011-09-01 up to 2011-11-03 always generated an exponent value of '1' to be used for private RSA key generation. A remote attacker could use this flaw to bypass or corrupt integrity of services, depending on strong private RSA keys generation mechanism.

Credit: secalert@redhat.com

Affected Software	Affected Version	How to fix
debian/ruby1.9.1
Ruby-lang Ruby	>=1.8.7.334<1.9.3

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Reference Links

Frequently Asked Questions

What is CVE-2011-4121?
CVE-2011-4121 refers to a vulnerability in the OpenSSL extension of Ruby (Git trunk) versions after 2011-09-01 up to 2011-11-03.
What is the severity of CVE-2011-4121?
CVE-2011-4121 has a severity level of critical with a severity value of 9.
How does CVE-2011-4121 impact services?
CVE-2011-4121 can be used by a remote attacker to bypass or corrupt the integrity of services that rely on strong private RSA key generation.
Which software versions are affected by CVE-2011-4121?
CVE-2011-4121 affects Ruby (Git trunk) versions after 2011-09-01 up to 2011-11-03, as well as Ruby 1.8.7.334 and Ruby 1.9.1.
Where can I find more information about CVE-2011-4121?
You can find more information about CVE-2011-4121 at the following references: [Debian Security Tracker](https://security-tracker.debian.org/tracker/CVE-2011-4121), [Red Hat Bugzilla](https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4121), [Red Hat CVE Database](https://access.redhat.com/security/cve/cve-2011-4121).

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