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Vulnerability CVE-2020-3555
Published: 2020-10-21
Description: |
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. |
Type:
CWE-404 (Improper Resource Shutdown or Release)
CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:C)
CVSS Base Score |
Impact Subscore |
Exploitability Subscore |
7.8/10 |
6.9/10 |
10/10 |
Exploit range |
Attack complexity |
Authentication |
Remote |
Low |
No required |
Confidentiality impact |
Integrity impact |
Availability impact |
None |
None |
Complete |
References: |
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-sipdos-3DGvdjvg
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