SB2021031604 - Denial of service in BIG-IP MPTCP
Published: March 16, 2021
Security Bulletin ID
SB2021031604
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) Resource management error (CVE-ID: CVE-2021-23003)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of internal resources within the application when processing MPTCP traffic. A remote attacker can send specially crafted data to the system and force TMM to produce a core file, resulting in denial of service.
The vulnerability can be also triggered in rare circumstances by running the tmsh show conn command.
Remediation
Install update from vendor's website.