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MEDIUM · 4.3

CVE-2020-5947

In versions 16.0.0-16.0.0.1 and 15.1.0-15.1.1, on specific BIG-IP platforms, attackers may be able to obtain TCP sequence numbers from the BIG-IP system that can be reused in future connections with t...

Vulnerability Description

In versions 16.0.0-16.0.0.1 and 15.1.0-15.1.1, on specific BIG-IP platforms, attackers may 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. Only these platforms are affected: 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).

CVSS Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE

Affected Products

VendorProductVersions
F5Big-Ip Access Policy Manager>= 15.0.0, < 15.1.2
F5Big-Ip Advanced Firewall Manager>= 15.0.0, < 15.1.2
F5Big-Ip Advanced Web Application Firewall>= 15.0.0, < 15.1.2
F5Big-Ip Analytics>= 15.0.0, < 15.1.2
F5Big-Ip Application Acceleration Manager>= 15.0.0, < 15.1.2
F5Big-Ip Application Security Manager>= 15.0.0, < 15.1.2
F5Big-Ip Ddos Hybrid Defender>= 15.0.0, < 15.1.2
F5Big-Ip Domain Name System>= 15.0.0, < 15.1.2
F5Big-Ip Fraud Protection Service>= 15.0.0, < 15.1.2
F5Big-Ip Global Traffic Manager>= 15.0.0, <= 15.1.2
F5Big-Ip Link Controller>= 15.0.0, < 15.1.2
F5Big-Ip Local Traffic Manager>= 15.0.0, < 15.1.2
F5Big-Ip Policy Enforcement Manager>= 15.0.0, < 15.1.2
F5Ssl Orchestrator>= 15.0.0, < 15.1.2
F5Big-Ip Virtual Edition-
F5Big-Ip 2000c112
F5Big-Ip 4000c113
F5Big-Ip I2000c117
F5Big-Ip I4000c115

References

FAQ

What is CVE-2020-5947?

CVE-2020-5947 is a vulnerability with a CVSS score of 4.3 (MEDIUM). In versions 16.0.0-16.0.0.1 and 15.1.0-15.1.1, on specific BIG-IP platforms, attackers may be able to obtain TCP sequence numbers from the BIG-IP system that can be reused in future connections with t...

How severe is CVE-2020-5947?

CVE-2020-5947 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-5947?

Check the references section above for vendor advisories and patch information. Affected products include: F5 Big-Ip Access Policy Manager, F5 Big-Ip Advanced Firewall Manager, F5 Big-Ip Advanced Web Application Firewall, F5 Big-Ip Analytics, F5 Big-Ip Application Acceleration Manager.