Raccoon attack against TLS implementation in F5 BIG-IP
| Risk | Medium |
| Patch available | NO |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-1968 |
| CWE-ID | CWE-200 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
BIG-IP Link Controller Hardware solutions / Routers & switches, VoIP, GSM, etc BIG-IP DNS Hardware solutions / Routers & switches, VoIP, GSM, etc BIG-IP AAM Hardware solutions / Routers & switches, VoIP, GSM, etc BIG-IP GTM Hardware solutions / Security hardware applicances BIG-IP ASM Hardware solutions / Security hardware applicances BIG-IP APM Hardware solutions / Security hardware applicances BIG-IP Analytics Hardware solutions / Security hardware applicances BIG-IP AFM Hardware solutions / Security hardware applicances BIG-IP LTM Hardware solutions / Security hardware applicances BIG-IP PEM Hardware solutions / Security hardware applicances BIG-IP FPS Hardware solutions / Security hardware applicances BIG-IP Hardware solutions / Firmware BIG-IP SSLO Hardware solutions / Firmware BIG-IP DDHD Hardware solutions / Firmware 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) Raccoon attack
EUVDB-ID: #VU46573
Risk: Medium
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2020-1968
CWE-ID:
CWE-200 - Information exposure
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a timing flaw in the TLS specification. A remote attacker can compute the pre-master secret in connections which have used a Diffie-Hellman (DH) based ciphersuite and eavesdrop on all encrypted communications sent over that TLS connection.
Note: The attack can only be exploited if an implementation re-uses a DH secret across multiple TLS connections.
MitigationCybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versionsBIG-IP Link Controller: 11.6.1 HF1 - 16.0.1
BIG-IP GTM: 11.6.1 HF1 - 16.0.1
BIG-IP DNS: 11.6.1 - 16.0.1
BIG-IP ASM: 11.6.1 HF1 - 16.0.1
BIG-IP APM: 11.6.1 HF1 - 16.0.1
BIG-IP Analytics: 11.6.1 HF1 - 16.0.1
BIG-IP AFM: 11.6.1 HF1 - 16.0.1
BIG-IP AAM: 11.6.1 HF1 - 16.0.1
BIG-IP LTM: 11.6.1 HF1 - 16.0.1
BIG-IP: 11.6.1 HF1 - 16.0.1
BIG-IP SSLO: 11.6.1 - 16.0.1
BIG-IP DDHD: 11.6.1 - 16.0.1
BIG-IP Advanced WAF: 11.6.1 - 16.0.1
BIG-IP PEM: 11.6.1 HF1 - 16.0.1
BIG-IP FPS: 11.6.1 - 16.0.1
CPE2.3- cpe:2.3:h:f5_networks:big-ip_link_controller:11.6.1 HF1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_link_controller:11.6.1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_link_controller:11.6.2 HF1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_gtm:11.6.1 HF1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_gtm:11.6.1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_gtm:11.6.2 HF1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_dns:11.6.1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_dns:11.6.2:HF1:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_dns:11.6.2:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_asm:11.6.1 HF1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_apm:11.6.1:HF1:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_analytics:11.6.1 HF1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_afm:11.6.1:HF1:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_aam:11.6.1:HF1:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_ltm:11.6.1 HF1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip:11.6.5.2:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_sslo:11.6.1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_ddhd:11.6.1:*:*:*:*:*:*:*
- cpe:2.3:a:f5_networks:big-ip_advanced_waf:11.6.1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_pem:11.6.1 HF1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_fps:11.6.1:*:*:*:*:*:*:*
https://support.f5.com/csp/article/K92451315
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
