Vulnerability Monitor

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CVE-2020-3555

A vulnerability in the SIP inspection process of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a crash and reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to a watchdog timeout and crash during the cleanup of threads that are associated with a SIP connection that is being deleted from the connection list. An attacker could exploit this vulnerability by sending a high rate of crafted SIP traffic through an affected device. A successful exploit could allow the attacker to cause a watchdog timeout and crash, resulting in a crash and reload of the affected device.

Published

2020-10-21T19:15:17.513

Last Modified

2024-11-21T05:31:18.387

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.8 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: COMPLETE
Exploitability Score

10.0

Impact Score

6.9

Weaknesses
  • Type: Secondary
    CWE-404
  • Type: Primary
    CWE-404
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application cisco adaptive_security_appliance < 9.6.4.43 Yes
Application cisco firepower_threat_defense ≤ 6.2.2 Yes
Application cisco firepower_threat_defense < 6.3.0.6 Yes
Application cisco firepower_threat_defense < 6.4.0.10 Yes
Application cisco firepower_threat_defense < 6.5.0.5 Yes
Application cisco firepower_threat_defense 6.6.0 Yes
Operating System cisco adaptive_security_appliance_software < 9.8.4.24 Yes
Operating System cisco adaptive_security_appliance_software < 9.9.2.80 Yes
Operating System cisco adaptive_security_appliance_software < 9.10.1.43 Yes
Operating System cisco adaptive_security_appliance_software < 9.12.4.2 Yes
Operating System cisco adaptive_security_appliance_software < 9.13.1.13 Yes
Operating System cisco adaptive_security_appliance_software < 9.14.1.19 Yes
References