CVE-2020-3226

Cisco IOS and IOS XE Software Session Initiation Protocol Denial of Service Vulnerability

State: Published
Severity: 8.6 High
Published: Jun 3, 2020
Updated: Nov 15, 2024
Reserved: Dec 12, 2019

Description

A vulnerability in the Session Initiation Protocol (SIP) library of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient sanity checks on received SIP messages. An attacker could exploit this vulnerability by sending crafted SIP messages to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service condition.

Scores

CVSS	Score	Vector	Source
3.0	8.6 High	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H	cisco

Weaknesses

CWE-20

Affected Products

Product	Versions
Cisco IOS 15.0(2)SG11aCisco	n/aAffected

References

20200603 Cisco IOS and IOS XE Software Session Initiation Protocol Denial of Service Vulnerabilityvendor-advisory

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