SECUFOCUSNOW
Home›CVE index›CVE-2020-3189
ReviewHigh

CVE-2020-3189

Cisco Cisco Firepower Threat Defense Software, secure firewall threat defense, asa 5505 firmware

A vulnerability in the VPN System Logging functionality for Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a memory leak that can deplete system memory over time, which can cause unexpected system behaviors or device crashes. The vulnerability is due to the system memory not being properly freed for a VPN System Logging event generated when a VPN session is created or deleted. An attacker could exploit this vulnerability by repeatedly creating or deleting a VPN tunnel connection, which could leak a small amount of system memory for eac...

CVSS
8.6
EPSS
1.80%
76.9% 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 probability1.80%
Technical severityCVSS 8.6

Vulnerability overview

A vulnerability in the VPN System Logging functionality for Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a memory leak that can deplete system memory over time, which can cause unexpected system behaviors or device crashes. The vulnerability is due to the system memory not being properly freed for a VPN System Logging event generated when a VPN session is created or deleted. An attacker could exploit this vulnerability by repeatedly creating or deleting a VPN tunnel connection, which could leak a small amount of system memory for eac...

Affected product and versions

Product
Cisco Cisco Firepower Threat Defense Software, secure firewall threat defense, asa 5505 firmware
Affected versions
6.2.3.12, 6.2.3.13, 6.2.3.14, 6.2.3.15, 9.9(2), 9.9(2.21), 9.9(2.52), 9.9(2.55)
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Cisco Cisco Firepower Threat Defense Software, secure firewall threat defense, asa 5505 firmware 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:C/C:N/I:N/A:H
CWE
CWE-400, CWE-401