New! Vulnerability Priority Rating (VPR)
Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it's different from CVSS.
VPR Score: 3.8
SynopsisThe remote device is missing a vendor-supplied security patch.
DescriptionOn specific BIG-IP platforms, attackersmay be able to obtain TCP sequence numbers from the BIG-IP system that can be reused in future connections with the same source and destination port and IP numbers.(CVE-2020-5947)
Attackersmay be able to spoof TCP packets to be used by a future connection, resulting in a TCP sequence prediction attack.
The following BIG-IP platforms do not contain the high speed bus (HSBe2) chip and do not have hardware-based SYN cookie capability, and are therefore vulnerable :
BIG-IP 2000 series (C112)
BIG-IP 4000 series (C113)
BIG-IP i2000 series (C117)
BIG-IP i4000 series (C115)
BIG-IP Virtual Edition (VE)
SolutionUpgrade to one of the non-vulnerable versions listed in the F5 Solution K64571774.