Resource exhaustion in F5 Big-ip_access_policy_manager

CVE-2018-5391

The Linux kernel, versions 3.9+, is vulnerable to a denial of service attack with low rates of specially modified packets targeting IP fragment re-assembly. An attacker may cause a denial of service condition by sending specially crafted I…

Vulnerability class: DoS (Denial of Service)

EPSS: 0.241 (97.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

  • cret@cert.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
  • cret@cert.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
  • cret@cert.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
  • cret@cert.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
  • cret@cert.org (US Government Resource, x_refsource_CERT-VN, Third Party Advisory, third-party-advisory)
  • cret@cert.org (x_refsource_CONFIRM, Third Party Advisory)
  • cret@cert.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
  • cret@cert.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
  • cret@cert.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
  • cret@cert.org (Patch, x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2018-5391?
CVE-2018-5391 is a high-severity vulnerability in F5 Big-ip_access_policy_manager, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2018-09-06.
How severe is CVE-2018-5391?
High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2018-5391 known to be exploited?
3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.