CVE-2020-3195: Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software OSPF Packets Processing Memory Leak Vulnerability

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-05-06 · updated 2026-08-11
Weakness: CWE-400

Description

A vulnerability in the Open Shortest Path First (OSPF) implementation in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a memory leak on an affected device. The vulnerability is due to incorrect processing of certain OSPF packets. An attacker could exploit this vulnerability by sending a series of crafted OSPF packets to be processed by an affected device. A successful exploit could allow the attacker to continuously consume memory on an affected device and eventually cause it to reload, resulting in a denial of service (DoS) condition.

Affected products

Cisco ASA Software: from 9.12 before 9.12.3.2; from 9.13 before 9.13.1.7 — fixed in 9.12.3.2, 9.13.1.7
Cisco Asa 5505 Firmware: 9.12(2)
Cisco Asa 5510 Firmware: 9.12(2)
Cisco Asa 5512-X Firmware: 9.12(2)
Cisco Asa 5515-X Firmware: 9.12(2)
Cisco Asa 5520 Firmware: 9.12(2)
Cisco Asa 5525-X Firmware: 9.12(2)
Cisco Asa 5540 Firmware: 9.12(2)
Cisco Asa 5545-X Firmware: 9.12(2)
Cisco Asa 5550 Firmware: 9.12(2)
Cisco Asa 5555-X Firmware: 9.12(2)
Cisco Asa 5580 Firmware: 9.12(2)
Cisco Asa 5585-X Firmware: 9.12(2)
Cisco Firepower Threat Defense Software: from 6.4.0 before 6.4.0.9; from 6.5.0 before 6.5.0.5 — fixed in 6.4.0.9, 6.5.0.5

How to fix

Upgrade to a fixed version: Cisco ASA Software 9.12.3.2, 9.13.1.7; Cisco Firepower Threat Defense Software 6.4.0.9, 6.5.0.5. Check the vendor advisory for mitigations.

References

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