#VU71817 NULL pointer dereference in BIG-IP and BIG-IP DNS - CVE-2023-22839

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Main Vulnerability Database Vulnerabilities #VU71817

#VU71817 NULL pointer dereference in BIG-IP and BIG-IP DNS - CVE-2023-22839

Published: February 6, 2023


Vulnerability identifier: #VU71817
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2023-22839
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
BIG-IP
BIG-IP DNS
Software vendor:
F5 Networks

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dreference error when  a DNS profile with the Rapid Response Mode setting enabled is configured on a virtual server with hardware SYN cookies enabled. A remote attacker can send specially crafted traffic to the device and perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

According to vendor the following models are affected by this vulnerability:

  • BIG-IP
    • BIG-IP 5000 series (C109)
      BIG-IP 7000 series (D110)
      BIG-IP 10000 series (D113)
      BIG-IP 12000 series (D111)
  • BIG-IP iSeries
    • BIG-IP i5600, i5800 (C119)
      BIG-IP i7600, i7800 (C118)
      BIG-IP i10600, i10800 (C116)
      BIG-IP i11600, i11800 (C123)
      BIG-IP i15600, i15800 (D116)
  • F5 rSeries
    • r5000
    • r10000
  • F5 VELOS BX110 blade
  • VIPRION B2100/2150 blade (A109, A113)
  • VIPRION B2250 blade (A112)
  • VIPRION B4300 series blade (A108, A110)
  • VIPRION B4450 series blade


External links