SB2021051011 - Denial of service in Ruby on Rails
Published: May 10, 2021
Security Bulletin ID
SB2021051011
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2021-22902)
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.
Remediation
Install update from vendor's website.