CVE-2018-15311

Home/CVE/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 t

CVE

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 t

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.

MEDIUM · CVSS 5.9 EPSS 0.03533

Monitor

No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence

Sigma rules0 YARA rules0

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Affected Products & Versions

f5 big-ip local traffic manager>= 11.5.1 and <= 11.5.6
f5 big-ip local traffic manager>= 11.6.0.0 and <= 11.6.3.2
f5 big-ip local traffic manager>= 12.1.0.0 and <= 12.1.3.5
f5 big-ip local traffic manager>= 13.0.0.0 and <= 13.1.0.5
f5 big-ip application acceleration manager>= 11.5.1 and <= 11.5.6
f5 big-ip application acceleration manager>= 11.6.0.0 and <= 11.6.3.2
f5 big-ip application acceleration manager>= 12.1.0.0 and <= 12.1.3.5
f5 big-ip application acceleration manager>= 13.0.0.0 and <= 13.1.0.5
Show all 52 affected productsf5 big-ip advanced firewall manager>= 11.5.1 and <= 11.5.6
f5 big-ip advanced firewall manager>= 11.6.0.0 and <= 11.6.3.2
f5 big-ip advanced firewall manager>= 12.1.0.0 and <= 12.1.3.5
f5 big-ip advanced firewall manager>= 13.0.0.0 and <= 13.1.0.5
f5 big-ip analytics>= 11.5.1 and <= 11.5.6
f5 big-ip analytics>= 11.6.0.0 and <= 11.6.3.2
f5 big-ip analytics>= 12.1.0.0 and <= 12.1.3.5
f5 big-ip analytics>= 13.0.0.0 and <= 13.1.0.5
f5 big-ip access policy manager>= 11.5.1 and <= 11.5.6
f5 big-ip access policy manager>= 11.6.0.0 and <= 11.6.3.2
f5 big-ip access policy manager>= 12.1.0.0 and <= 12.1.3.5
f5 big-ip access policy manager>= 13.0.0.0 and <= 13.1.0.5
f5 big-ip application security manager>= 11.5.1 and <= 11.5.6
f5 big-ip application security manager>= 11.6.0.0 and <= 11.6.3.2
f5 big-ip application security manager>= 12.1.0.0 and <= 12.1.3.5
f5 big-ip application security manager>= 13.0.0.0 and <= 13.1.0.5
f5 big-ip domain name system>= 11.5.1 and <= 11.5.6
f5 big-ip domain name system>= 11.6.0.0 and <= 11.6.3.2
f5 big-ip domain name system>= 12.1.0.0 and <= 12.1.3.5
f5 big-ip domain name system>= 13.0.0.0 and <= 13.1.0.5
f5 big-ip edge gateway>= 11.5.1 and <= 11.5.6
f5 big-ip edge gateway>= 11.6.0.0 and <= 11.6.3.2
f5 big-ip edge gateway>= 12.1.0.0 and <= 12.1.3.5
f5 big-ip edge gateway>= 13.0.0.0 and <= 13.1.0.5
f5 big-ip fraud protection service>= 11.5.1 and <= 11.5.6
f5 big-ip fraud protection service>= 11.6.0.0 and <= 11.6.3.2
f5 big-ip fraud protection service>= 12.1.0.0 and <= 12.1.3.5
f5 big-ip fraud protection service>= 13.0.0.0 and <= 13.1.0.5
f5 big-ip global traffic manager>= 11.5.1 and <= 11.5.6
f5 big-ip global traffic manager>= 11.6.0.0 and <= 11.6.3.2
f5 big-ip global traffic manager>= 12.1.0.0 and <= 12.1.3.5
f5 big-ip global traffic manager>= 13.0.0.0 and <= 13.1.0.5
f5 big-ip link controller>= 11.5.1 and <= 11.5.6
f5 big-ip link controller>= 11.6.0.0 and <= 11.6.3.2
f5 big-ip link controller>= 12.1.0.0 and <= 12.1.3.5
f5 big-ip link controller>= 13.0.0.0 and <= 13.1.0.5
f5 big-ip policy enforcement manager>= 11.5.1 and <= 11.5.6
f5 big-ip policy enforcement manager>= 11.6.0.0 and <= 11.6.3.2
f5 big-ip policy enforcement manager>= 12.1.0.0 and <= 12.1.3.5
f5 big-ip policy enforcement manager>= 13.0.0.0 and <= 13.1.0.5
f5 big-ip webaccelerator>= 11.5.1 and <= 11.5.6
f5 big-ip webaccelerator>= 11.6.0.0 and <= 11.6.3.2
f5 big-ip webaccelerator>= 12.1.0.0 and <= 12.1.3.5
f5 big-ip webaccelerator>= 13.0.0.0 and <= 13.1.0.5

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Scoring & Timeline

5.9

MEDIUM · CVSS v3.0 · f5sirt@f5.com

View on NVD

Attack Vector

Network Adjacent Local Physical

Attack Complexity

Low High

Privileges Required

None Low High

User Interaction

None Required

Scope

Unchanged Changed

Confidentiality

None Low High

Integrity

None Low High

Availability

None Low High

Published to NVD10 Oct 2018 · 02:29 PM

CVSS VectorCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

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References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

https://support.f5.com/csp/article/K07550539MitigationVendor Advisory

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