Denial of service in F5 Networks BIG-IP products
| Risk | Low |
| Patch available | NO |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2018-1120 |
| CWE-ID | CWE-20 |
| 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) Improper input validation
EUVDB-ID: #VU12853
Risk: Low
CVSSv4.0: 5.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]
CVE-ID: CVE-2018-1120
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: Yes
DescriptionThe vulnerability allows a local user to cause DoS condition on the target system.
The weakness exists due to insufficient validation of user-supplied input. A local user can block any read() access to /proc/PID/cmdline by mmap()ing a FUSE file (Filesystem in Userspace) onto this process's command-line arguments, block pgrep, pidof, pkill, ps, and w, either forever (a denial of service), or for some controlled time (a synchronization tool for exploiting other vulnerabilities).
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versionsBIG-IP SSLO: 11.6.1 - 16.0.1
BIG-IP PEM: 11.6.1 - 16.0.1
BIG-IP Link Controller: 11.6.1 - 16.0.1
BIG-IP GTM: 11.6.1 - 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 - 16.0.1
BIG-IP APM: 11.6.1 - 16.0.1
BIG-IP Analytics: 11.6.1 - 16.0.1
BIG-IP AFM: 11.6.1 - 16.0.1
BIG-IP Advanced WAF: 11.6.1 - 16.0.1
BIG-IP AAM: 11.6.1 - 16.0.1
BIG-IP LTM: 11.6.1 - 16.0.1
BIG-IP: 11.6.1 - 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:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_sslo:11.6.2 HF1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_pem:11.6.1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_pem:11.6.1 HF1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_pem:11.6.2:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_link_controller:11.6.1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_link_controller:11.6.1 HF1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_link_controller:11.6.2:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_gtm:11.6.1:*:*:*:*:*:*:*
- 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:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_apm:11.6.1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_analytics:11.6.1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_afm:11.6.1:*:*:*:*:*:*:*
- 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:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip_ltm:11.6.1:*:*:*:*:*:*:*
- cpe:2.3:h:f5_networks:big-ip:11.6.1:*:*:*:*:*:*:*
https://support.f5.com/csp/article/K42202505
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.
