Denial of service in TMM module in F5 BIG-IP
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-27713 |
| CWE-ID | CWE-401 |
| Exploitation vector | Network |
| Public exploit | N/A |
| 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 medium risk vulnerability.
1) Memory leak
EUVDB-ID: #VU49057
Risk: Medium
CVSSv4.0: 6.6 [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/E:U/U:Green]
CVE-ID: CVE-2020-27713
CWE-ID:
CWE-401 - Missing release of memory after effective lifetime
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak when a BIG-IP AFM HTTP security profile is applied to a virtual
server and the BIG-IP system receives a request with specific
characteristics. A remote attacker can send specially crafted traffic to the server, force TMM module to leak memory and perform a denial of service (DoS) attack.
Install update from vendor's website.
Vulnerable software versionsBIG-IP: 13.1.3.4
BIG-IP LTM: 13.1.3.4
BIG-IP AAM: 13.1.3.4
BIG-IP Advanced WAF: 13.1.3.4
BIG-IP AFM: 13.1.3.4
BIG-IP Analytics: 13.1.3.4
BIG-IP APM: 13.1.3.4
BIG-IP ASM: 13.1.3.4
BIG-IP DDHD: 13.1.3.4
BIG-IP DNS: 13.1.3.4
BIG-IP FPS: 13.1.3.4
BIG-IP GTM: 13.1.3.4
BIG-IP Link Controller: 13.1.3.4
BIG-IP PEM: 13.1.3.4
BIG-IP SSLO: 13.1.3.4
CPE2.3- cpe:2.3:h:f5_networks:big-ip:13.1.3.4:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_ltm:13.1.3.4:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_aam:13.1.3.4:*:*:*:*:*:*:*
- cpe:2.3:a:f5_networks:big-ip_advanced_waf:13.1.3.4:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_afm:13.1.3.4:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_analytics:13.1.3.4:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_apm:13.1.3.4:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_asm:13.1.3.4:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_ddhd:13.1.3.4:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_dns:13.1.3.4:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_fps:13.1.3.4:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_gtm:13.1.3.4:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_link_controller:13.1.3.4:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_pem:13.1.3.4:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_sslo:13.1.3.4:*:*:*:*:*:*:*
https://support.f5.com/csp/article/K37960100
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.
