QID 376077

Date Published: 2021-11-18

QID 376077: F5 BIG-IP Access Policy Manager (APM), Application Security Manager (ASM), Local Traffic Manager (LTM) Linux kernel Vulnerability (K32380005)

The flow_dissector feature in the Linux kernel 4.3 through 5.x before 5.3.10 has a device tracking vulnerability, aka CID-55667441c84f. This occurs because the auto flowlabel of a UDP IPv6 packet relies on a 32-bit hashrnd value as a secret, and because jhash (instead of siphash) is used. The hashrnd value remains the same starting from boot time, and can be inferred by an attacker. This affects net/core/flow_dissector.c and related code.CVE-2019-18282

Vulnerable Component: BIG-IP LTM,APM,ASM

Affected Versions:
16.0.0 - 16.0.1
15.1.0 - 15.1.2
14.1.0 - 14.1.4
13.1.0 - 13.1.3
12.1.0 - 12.1.5
11.6.1 - 11.6.5

QID Detection Logic(Authenticated):
This QID checks for the vulnerable versions of F5 BIG-IP devices using the tmsh command.

An attacker can exploit this vulnerability and access sensitive information on an affected system.

  • CVSS V3 rated as Medium - 5.3 severity.
  • CVSS V2 rated as Medium - 5 severity.
    • Solution
    The vendor has released patch, for more information please visit: K32380005
    Vendor References

    CVEs related to QID 376077

    CVE-2019-18282 |
    Software Advisories
    Advisory ID Software Component Link
    K32380005 URL Logo support.f5.com/csp/article/K32380005
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