Auth bypass in F5 Big-Ip Access Policy Manager
CVE-2018-5520
On an F5 BIG-IP 13.0.0-13.1.0.5, 12.1.0-12.1.3.1, or 11.2.1-11.6.3.1 system configured in Appliance mode, the TMOS Shell (tmsh) may allow an administrative user to use the dig utility to gain unauthorized access to file system resources.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.010 (61.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 61.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: -0.000
Affected products
- F5 Big-Ip Access Policy Manager
- F5 Big-Ip Advanced Firewall Manager
- F5 Big-Ip Analytics
- F5 Big-Ip Application Acceleration Manager
- F5 Big-Ip Application Security Manager
- F5 Big-Ip Domain Name System
- F5 Big-Ip Edge Gateway
- F5 Big-Ip Global Traffic Manager
- F5 Big-Ip Link Controller
- F5 Big-Ip Local Traffic Manager
Weakness classification (CWE)
References
- support.f5.com/csp/article/K02043709 (Vendor Advisory)
- www.securitytracker.com/id/1040798 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2018-5520?
- CVE-2018-5520 is a medium-severity vulnerability in F5 Big-Ip Access Policy Manager, classified under Incorrect Authorization. CVSS score: 4.4/10. Published 2018-05-02.
- How severe is CVE-2018-5520?
- Medium severity. CVSS v3 base score is 4.4 out of 10.