SB2022091330 - Red Hat Enterprise Linux 8 update for the ruby:2.7 module

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Main Vulnerability Database SB2022091330

SB2022091330 - Red Hat Enterprise Linux 8 update for the ruby:2.7 module

Published: September 13, 2022

Security Bulletin ID SB2022091330
Severity
High
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 33% Medium 67%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 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) 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.

References