Risk | High |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-22991 |
CWE-ID | CWE-119 |
Exploitation vector | Network |
Public exploit | Vulnerability #1 is being exploited in the wild. |
Vulnerable software |
BIG-IP Hardware solutions / Firmware BIG-IP DDHD Hardware solutions / Firmware BIG-IP SSLO Hardware solutions / Firmware BIG-IP LTM Hardware solutions / Security hardware applicances BIG-IP AFM Hardware solutions / Security hardware applicances BIG-IP Analytics Hardware solutions / Security hardware applicances BIG-IP APM Hardware solutions / Security hardware applicances BIG-IP ASM Hardware solutions / Security hardware applicances BIG-IP FPS Hardware solutions / Security hardware applicances BIG-IP GTM Hardware solutions / Security hardware applicances BIG-IP PEM Hardware solutions / Security hardware applicances BIG-IP AAM Hardware solutions / Routers & switches, VoIP, GSM, etc BIG-IP DNS Hardware solutions / Routers & switches, VoIP, GSM, etc BIG-IP Link Controller Hardware solutions / Routers & switches, VoIP, GSM, etc BIG-IP Advanced WAF Client/Desktop applications / Antivirus software/Personal firewalls |
Vendor | F5 Networks |
Security Bulletin
This security bulletin contains one high risk vulnerability.
EUVDB-ID: #VU51422
Risk: High
CVSSv4.0: [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber]
CVE-ID: CVE-2021-22991
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing HTTP requests within the Traffic Management Microkernel (TMM) URI normalization feature. A remote attacker can create a specially crafted HTTP request to the virtual server associated with an HTTP profile, trigger memory corruption and crash the service or execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsBIG-IP: 12.1.0 HF1 - 16.0.1
BIG-IP LTM: 12.1.0 HF1 - 16.0.1
BIG-IP AAM: 12.1.0 HF1 - 16.0.1
BIG-IP Advanced WAF: 12.1.0 - 16.0.1
BIG-IP AFM: 12.1.0 HF1 - 16.0.1
BIG-IP Analytics: 12.1.0 - 16.0.1
BIG-IP APM: 12.1.0 HF1 - 16.0.1
BIG-IP ASM: 12.1.0 HF1 - 16.0.1
BIG-IP DDHD: 12.1.0 - 16.0.1
BIG-IP DNS: 12.1.0 - 16.0.1
BIG-IP FPS: 12.1.0 - 16.0.1
BIG-IP GTM: 12.1.0 - 16.0.1
BIG-IP Link Controller: 12.1.0 HF1 - 16.0.1
BIG-IP PEM: 12.1.0 HF1 - 16.0.1
BIG-IP SSLO: 12.1.0 - 16.0.1
CPE2.3http://support.f5.com/csp/article/K56715231
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?
Yes. This vulnerability is being exploited in the wild.