QID 376371

Date Published: 2022-02-07

QID 376371: F5 BIG-IP Application Security Manager (ASM), Local Traffic Manager (LTM), Access Policy Manager (APM) Linux kernel Vulnerability (K67416037)

A race condition in Linux kernel SCTP sockets (net/sctp/socket.c) before 5.12-rc8 can lead to kernel privilege escalation from the context of a network service or an unprivileged process. If sctp_destroy_sock is called without sock_net(sk)->sctp.addr_wq_lock then an element is removed from the auto_asconf_splist list without any proper locking. This can be exploited by an attacker with network service privileges to escalate to root or from the context of an unprivileged user directly if a BPF_CGROUP_INET_SOCK_CREATE is attached which denies creation of some SCTP socketCVE-2021-23133

Vulnerable Component: BIG-IP ASM,LTM,APM

Affected Versions:
16.1.0 - 16.1.2
15.1.0 - 15.1.5
14.1.0 - 14.1.4
13.1.0 - 13.1.4

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

An attacker may be able to exploit this vulnerability to disclosure sensitive information, modify data, or cause a Denial of Service (DoS).

  • CVSS V3 rated as High - 7 severity.
  • CVSS V2 rated as High - 6.9 severity.
  • Solution
    The vendor has released patch, for more information please visit: K67416037
    Vendor References

    CVEs related to QID 376371

    Software Advisories
    Advisory ID Software Component Link
    K67416037 URL Logo support.f5.com/csp/article/K67416037