SB2022091327 - Red Hat Enterprise Linux 8 update for the ruby:3.0 module
Published: September 13, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Incorrect Regular Expression (CVE-ID: CVE-2021-41817)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient input validation when processing regular expressions on date parsing methods. A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.
2) Spoofing attack (CVE-ID: CVE-2021-41819)
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to incorrect processing of user-supplied data in CGI::Cookie.parse. A remote attacker can spoof page content.
3) Double Free (CVE-ID: CVE-2022-28738)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in Regexp compilation process in Ruby. A remote attacker can pass specially crafted data to the application, trigger a double free error and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
4) Type conversion (CVE-ID: CVE-2022-28739)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to a type conversion error in some convertion methods like Kernel#Float</code> and <code>String#to_f. A remote attacker can pass specially crafted data to the affected application, trigger memory corruption and execute arbitrary code in the system.
Remediation
Install update from vendor's website.