CVE-2018-5506: f5 networks, inc. big-ip (ltm, aam, afm, analytics, apm, asm, dns, edge gateway, gtm, link controller, pem, webaccelerator, websafe)
Vulnerability summary
CVE-2018-5506 is a critical (CVSS 9.8) vulnerability in f5 networks, inc. big-ip (ltm, aam, afm, analytics, apm, asm, dns, edge gateway, gtm, link controller, pem, webaccelerator, websafe). EPSS estimates a 0.72% chance of exploitation in the next 30 days, higher than 52.8% of scored vulnerabilities.
Timeline
- 13-04-2018PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
0.72%
Chance of exploitation in the next 30 days
Percentile
53%
Versus all other CVEs
30-day change
-0.01 pp
From 0.73% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
F513 products
- big-ip_access_policy_manager≥ 11.5.1, ≤ 11.5.5 | ≥ 12.1.0, ≤ 12.1.3.1 | 11.2.1 | 11.6.1 | 13.0.0
- big-ip_advanced_firewall_manager≥ 11.5.1, ≤ 11.5.5 | ≥ 12.1.0, ≤ 12.1.3.1 | 11.2.1 | 11.6.1 | 13.0.0
- big-ip_analytics≥ 11.5.1, ≤ 11.5.5 | ≥ 12.1.0, ≤ 12.1.3.1 | 11.2.1 | 11.6.1 | 13.0.0
- big-ip_application_acceleration_manager≥ 11.5.1, ≤ 11.5.5 | ≥ 12.1.0, ≤ 12.1.3.1 | 11.2.1 | 11.6.1 | 13.0.0
- big-ip_application_security_manager≥ 11.5.1, ≤ 11.5.5 | ≥ 12.1.0, ≤ 12.1.3.1 | 11.2.1 | 11.6.1 | 13.0.0
F5 networks, inc.1 product
- big-ip (ltm, aam, afm, analytics, apm, asm, dns, edge gateway, gtm, link controller, pem, webaccelerator, websafe)13.0.0 | 12.1.0-12.1.2 | 11.6.1 | 11.5.1-11.5.5 | 11.2.1
2 vendors · 14 products