Use-after-free in Ruby on Rails - CVE-2021-22902
Published: May 10, 2021
Vulnerability identifier: #VU53002
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-22902
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error in the Action Dispatch. A remote attacker can send specially crafted Accept headers and cause a denial of service condition on the target system.
Affected software
Ruby on Rails
IBM Cloud Pak for Multicloud Management
IBM Cloud Pak for Multicloud Management
How to mitigate CVE-2021-22902
Install updates from vendor's website.
Ruby on Rails - addressed in versions 6.0.3.7, 6.1.0.2