CVE-2018-15311: f5 networks, inc. big-ip (ltm, aam, afm, analytics, apm, asm, dns, edge gateway, fps, gtm, link controller, pem, webaccelerator)
Vulnerability summary
CVE-2018-15311 is a medium (CVSS 5.9) vulnerability in f5 networks, inc. big-ip (ltm, aam, afm, analytics, apm, asm, dns, edge gateway, fps, gtm, link controller, pem, webaccelerator). EPSS estimates a 1.42% chance of exploitation in the next 30 days, higher than 72.5% of scored vulnerabilities.
Timeline
- 10-10-2018PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
When F5 BIG-IP 13.0.0-13.1.0.5, 12.1.0-12.1.3.5, 11.6.0-11.6.3.2, or 11.5.1-11.5.6 is processing specially crafted TCP traffic with the Large Receive Offload (LRO) feature enabled, TMM may crash, leading to a failover event. This vulnerability is not exposed unless LRO is enabled, so most affected customers will be on 13.1.x. LRO has been available since 11.4.0 but is not enabled by default until 13.1.0.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
1.42%
Chance of exploitation in the next 30 days
Percentile
73%
Versus all other CVEs
30-day change
0.00 pp
From 1.42% on 20-09-2026
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, ≤ 11.5.6 | ≥ 11.6.0.0, ≤ 11.6.3.2 | ≥ 12.1.0.0, ≤ 12.1.3.5 | ≥ 13.0.0.0, ≤ 13.1.0.5
- big-ip_advanced_firewall_manager≥ 11.5.1, ≤ 11.5.6 | ≥ 11.6.0.0, ≤ 11.6.3.2 | ≥ 12.1.0.0, ≤ 12.1.3.5 | ≥ 13.0.0.0, ≤ 13.1.0.5
- big-ip_analytics≥ 11.5.1, ≤ 11.5.6 | ≥ 11.6.0.0, ≤ 11.6.3.2 | ≥ 12.1.0.0, ≤ 12.1.3.5 | ≥ 13.0.0.0, ≤ 13.1.0.5
- big-ip_application_acceleration_manager≥ 11.5.1, ≤ 11.5.6 | ≥ 11.6.0.0, ≤ 11.6.3.2 | ≥ 12.1.0.0, ≤ 12.1.3.5 | ≥ 13.0.0.0, ≤ 13.1.0.5
- big-ip_application_security_manager≥ 11.5.1, ≤ 11.5.6 | ≥ 11.6.0.0, ≤ 11.6.3.2 | ≥ 12.1.0.0, ≤ 12.1.3.5 | ≥ 13.0.0.0, ≤ 13.1.0.5
F5 networks, inc.1 product
- big-ip (ltm, aam, afm, analytics, apm, asm, dns, edge gateway, fps, gtm, link controller, pem, webaccelerator)13.0.0-13.1.0.5 | 12.1.0-12.1.3.5 | 11.6.0-11.6.3.2 | 11.5.1-11.5.6
2 vendors · 14 products