Security Bulletin
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU51491
Risk: Medium
CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-23003
CWE-ID:
CWE-399 - Resource Management Errors
Exploit availability: No
DescriptionThe 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.
MitigationInstall updates from vendor's website.
Vulnerable software versionsBIG-IP: 11.6.1 - 16.0.1
BIG-IP LTM: 11.6.1 - 16.0.1
BIG-IP AAM: 11.6.1 - 16.0.1
BIG-IP Advanced WAF: 11.6.1 - 16.0.1
BIG-IP AFM: 11.6.1 - 16.0.1
BIG-IP Analytics: 11.6.1 - 16.0.1
BIG-IP APM: 11.6.1 - 16.0.1
BIG-IP ASM: 11.6.1 - 16.0.1
BIG-IP DDHD: 11.6.1 - 16.0.1
BIG-IP DNS: 11.6.1 - 16.0.1
BIG-IP FPS: 11.6.1 - 16.0.1
BIG-IP GTM: 11.6.1 - 16.0.1
BIG-IP Link Controller: 11.6.1 - 16.0.1
BIG-IP PEM: 11.6.1 - 16.0.1
BIG-IP SSLO: 11.6.1 - 16.0.1
External linkshttp://support.f5.com/csp/article/K43470422
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.