CVE-2018-5506

high-risk
Published 2018-04-13

In F5 BIG-IP 13.0.0, 12.1.0-12.1.2, 11.6.1, 11.5.1-11.5.5, or 11.2.1 the Apache modules apache_auth_token_mod and mod_auth_f5_auth_token.cpp allow possible unauthenticated bruteforce on the em_server_ip authorization parameter to obtain which SSL client certificates used for mutual authentication between BIG-IQ or Enterprise Manager (EM) and managed BIG-IP devices.

Do I need to act?

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0.19% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (20)

Affected Vendors

F5

References (2)

Vendor Advisory https://support.f5.com/csp/article/K65355492
Vendor Advisory https://support.f5.com/csp/article/K65355492
59
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 1/34 · Minimal
Exposure 26/34 · High