CVE-2017-6138

high

Published 2017-12-21 · Modified 2026-05-13

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CVSS v3

7.5

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

CVSS v4 NEW

—

not yet in upstream

VIR risk

7.5

Description

In F5 BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS, GTM, Link Controller, PEM and WebSafe software version 13.0.0 and 12.1.0 - 12.1.2, malicious requests made to virtual servers with an HTTP profile can cause the TMM to restart. The issue is exposed with BIG-IP APM profiles, regardless of settings. The issue is also exposed with the non-default "normalize URI" configuration options used in iRules and/or BIG-IP LTM policies.

Predictions

Exploit likelihood

83%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

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Application impact

Vendor	Product	Versions
f5	big-ip_local_traffic_manager	`{"startIncluding":"12.1.0","endIncluding":"12.1.2"}`
f5	big-ip_local_traffic_manager	`13.0.0`
f5	big-ip_application_acceleration_manager	`{"startIncluding":"12.1.0","endIncluding":"12.1.2"}`
f5	big-ip_application_acceleration_manager	`13.0.0`
f5	big-ip_advanced_firewall_manager	`{"startIncluding":"12.1.0","endIncluding":"12.1.2"}`
f5	big-ip_advanced_firewall_manager	`13.0.0`
f5	big-ip_analytics	`{"startIncluding":"12.1.0","endIncluding":"12.1.2"}`
f5	big-ip_analytics	`13.0.0`
f5	big-ip_access_policy_manager	`{"startIncluding":"12.1.0","endIncluding":"12.1.2"}`
f5	big-ip_access_policy_manager	`13.0.0`
f5	big-ip_application_security_manager	`{"startIncluding":"12.1.0","endIncluding":"12.1.2"}`
f5	big-ip_application_security_manager	`13.0.0`
f5	big-ip_dns	`{"startIncluding":"12.1.0","endIncluding":"12.1.2"}`
f5	big-ip_dns	`13.0.0`
f5	big-ip_global_traffic_manager	`{"startIncluding":"12.1.0","endIncluding":"12.1.2"}`
f5	big-ip_global_traffic_manager	`13.0.0`
f5	big-ip_link_controller	`{"startIncluding":"12.1.0","endIncluding":"12.1.2"}`
f5	big-ip_link_controller	`13.0.0`
f5	big-ip_policy_enforcement_manager	`{"startIncluding":"12.1.0","endIncluding":"12.1.2"}`
f5	big-ip_policy_enforcement_manager	`13.0.0`
f5	big-ip_websafe	`{"startIncluding":"12.1.0","endIncluding":"12.1.2"}`
f5	big-ip_websafe	`13.0.0`

References

CWEs

CWE-20

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.