Race condition in Linux kernel in F5 Networks BIG-IP
| Risk | Low |
| Patch available | NO |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2017-10661 |
| CWE-ID | CWE-362 |
| Exploitation vector | Local |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software |
BIG-IP SSLO Hardware solutions / Firmware BIG-IP DDHD Hardware solutions / Firmware BIG-IP Hardware solutions / Firmware BIG-IP PEM Hardware solutions / Security hardware applicances BIG-IP GTM Hardware solutions / Security hardware applicances BIG-IP FPS 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 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 Advanced WAF Client/Desktop applications / Antivirus software/Personal firewalls |
| Vendor | F5 Networks |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Race condition
EUVDB-ID: #VU9693
Risk: Low
CVSSv4.0: 7.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]
CVE-ID: CVE-2017-10661
Exploit availability: Yes
DescriptionThe vulnerability allows a local attacker to gain elevated privileges or cause DoS condition on the target system.
The weakness exists due to race condition in fs/timerfd.c in the Linux kernel. A local attacker can use simultaneous file-descriptor operations, leverage improper might_cancel queueing, trigger list corruption or use-after-free and cause the service to crash or execute arbitrary code with root privileges.
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
BIG-IP SSLO: 11.6.1 - 16.0.1
BIG-IP PEM: 11.6.1 HF1 - 16.0.1
BIG-IP Link Controller: 11.6.1 HF1 - 16.0.1
BIG-IP GTM: 11.6.1 HF1 - 16.0.1
BIG-IP FPS: 11.6.1 - 16.0.1
BIG-IP DNS: 11.6.1 - 16.0.1
BIG-IP DDHD: 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 Advanced WAF: 11.6.1 - 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
CPE2.3- cpe:2.3:h:f5_networks:big-ip_sslo:11.6.1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_sslo:11.6.2 HF1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_sslo:11.6.2:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_pem:11.6.1 HF1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_pem:11.6.1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_pem:11.6.2 HF1:*:*:*:*:*:*:*
- 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_fps:11.6.1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_dns:11.6.1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_ddhd:11.6.1:*:*:*:*:*:*:*
- 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:a:f5_networks:big-ip_advanced_waf:11.6.1:*:*:*:*:*:*:*
- 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:*:*:*:*:*:*:*
http://support.f5.com/csp/article/K04337834
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
