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ReviewHigh

CVE-2020-3298

Cisco Cisco Adaptive Security Appliance (ASA) Software, secure firewall threat defense, adaptive security appliance software

A vulnerability in the Open Shortest Path First (OSPF) implementation of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to improper memory protection mechanisms while processing certain OSPF packets. An attacker could exploit this vulnerability by sending a series of malformed OSPF packets in a short period of time to an affected device. A successful exploit could allow the at...

CVSS
7.5
EPSS
1.92%
78.5% percentile
CISA KEV
Not listed
Published
2020.05.07
PRIORITY ASSESSMENT

Review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability1.92%
Technical severityCVSS 7.5

Vulnerability overview

A vulnerability in the Open Shortest Path First (OSPF) implementation of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to improper memory protection mechanisms while processing certain OSPF packets. An attacker could exploit this vulnerability by sending a series of malformed OSPF packets in a short period of time to an affected device. A successful exploit could allow the at...

Affected product and versions

Product
Cisco Cisco Adaptive Security Appliance (ASA) Software, secure firewall threat defense, adaptive security appliance software
Affected versions
>= 6.2.0 < 6.2.3.16, >= 6.3.0 < 6.3.0.6, >= 6.4.0 < 6.4.0.9, >= 6.5.0 < 6.5.0.5, >= 9.6.0 <= 9.6.4.40, >= 9.8.0 <= 9.8.4.17, >= 9.9.0 <= 9.9.2.66, >= 9.10.0 <= 9.10.1.37, >= 9.12.0 <= 9.12.3.7, >= 9.13.0 <= 9.13.1.7
Fixed versions
6.2.3.16, 6.3.0.6, 6.4.0.9, 6.5.0.5

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Cisco Cisco Adaptive Security Appliance (ASA) Software, secure firewall threat defense, adaptive security appliance software and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
CWE-125