CVE & CISA-KEV Catalog

CVE-2020-5947

MEDIUM
4.3
CVSS v3
NVD

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).

How to fix

Remediation Available
big-ip access policy managerNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2020-5947derived from NVD
big-ip advanced firewall managerNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2020-5947derived from NVD
big-ip advanced web application firewallNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2020-5947derived from NVD
big-ip analyticsNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2020-5947derived from NVD
big-ip application acceleration managerNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2020-5947derived from NVD
big-ip application security managerNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2020-5947derived from NVD
big-ip ddos hybrid defenderNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2020-5947derived from NVD
big-ip domain name systemNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2020-5947derived from NVD
big-ip fraud protection serviceNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2020-5947derived from NVD
big-ip global traffic managerNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2020-5947derived from NVD
big-ip link controllerNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2020-5947derived from NVD
big-ip local traffic managerNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2020-5947derived from NVD
big-ip policy enforcement managerNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2020-5947derived from NVD
ssl orchestratorNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2020-5947derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityLow
IntegrityNone
AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Exploit Intelligence

0.69%probability of exploitation in 30 days
48thpercentile

Moderate risk: more likely to be exploited than 48% of all known CVEs.

References

Vendor Advisory1
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CVE-2020-5947 severity badge

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.