CVE-2020-3555

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SIP Denial of Service Vulnerability

State: Published
Severity: 6.8 Medium
Published: Oct 21, 2020
Updated: Nov 13, 2024
Reserved: Dec 12, 2019

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.

Scores

CVSS	Score	Vector	Source
3.1	6.8 Medium	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H	cisco

Weaknesses

CWE-404

Affected Products

Product	Versions
Cisco Adaptive Security Appliance (ASA) SoftwareCisco	n/aAffected

References

20201021 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SIP Denial of Service Vulnerabilityvendor-advisory

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