CVE-2023-42768: f5 big-ip Insufficient Session Expiration
Vulnerability summary
CVE-2023-42768 is a high (CVSS 7.2) Insufficient Session Expiration vulnerability in f5 big-ip. EPSS estimates a 0.65% chance of exploitation in the next 30 days, higher than 50.5% of scored vulnerabilities.
Timeline
- 10-10-2023PublishedVulnerability first disclosed.
- 19-09-2024Last modifiedVulnerability information updated.
Description
When a non-admin user has been assigned an administrator role via an iControl REST PUT request and later the user's role is reverted back to a non-admin role via the Configuration utility, tmsh, or iControl REST. BIG-IP non-admin user can still have access to iControl REST admin resource. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
CVSS metrics
2 scores · 2 sources · 1 version- NVDNIST7.2HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.65%
Chance of exploitation in the next 30 days
Percentile
51%
Versus all other CVEs
30-day change
+0.12 pp
From 0.53% on 22-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
F520 products
- big-ip≥ 16.1.0, < 16.1.4 | ≥ 15.1.0, < 15.1.9 | ≥ 14.1.0 (No fix recorded) | ≥ 13.1.0 (No fix recorded)
- big-ip_access_policy_manager≥ 13.1.0, ≤ 13.1.5 | ≥ 14.1.0, ≤ 14.1.5 | ≥ 15.1.0, < 15.1.9 | ≥ 16.1.0, < 16.1.4
- big-ip_advanced_firewall_manager≥ 13.1.0, ≤ 13.1.5 | ≥ 14.1.0, ≤ 14.1.5 | ≥ 15.1.0, < 15.1.9 | ≥ 16.1.0, < 16.1.4
- big-ip_advanced_web_application_firewall≥ 13.1.0, ≤ 13.1.5 | ≥ 14.1.0, ≤ 14.1.5 | ≥ 15.1.0, < 15.1.9 | ≥ 16.1.0, < 16.1.4
- big-ip_analytics≥ 13.1.0, ≤ 13.1.5 | ≥ 14.1.0, ≤ 14.1.5 | ≥ 15.1.0, < 15.1.9 | ≥ 16.1.0, < 16.1.4
1 vendor · 20 products
References
1 links- my.f5.com/manage/s/article/K26910459Vendor Advisory