SB2019112627 - Inadequate Encryption Strength in Ruby Ruby

Description

This security bulletin contains information about 1 vulnerability.

1) Inadequate Encryption Strength (CVE-ID: CVE-2011-4121)

CWE-ID: CWE-326 - Inadequate Encryption Strength

CVSSv4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

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.

Remediation

Install update from vendor's website.

References

• http://www.openwall.com/lists/oss-security/2013/07/01/1
• https://access.redhat.com/security/cve/cve-2011-4121
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4121
• https://security-tracker.debian.org/tracker/CVE-2011-4121