SB2019112627 - Inadequate Encryption Strength in Ruby Ruby
Published: November 26, 2019 Updated: July 17, 2020
Security Bulletin ID
SB2019112627
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Inadequate Encryption Strength (CVE-ID: CVE-2011-4121)
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.