CVE-2019-12654

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

Description

A vulnerability in the common Session Initiation Protocol (SIP) library of Cisco IOS and 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 an internal data structure. An attacker could exploit this vulnerability by sending a sequence of malicious SIP messages to an affected device. An exploit could allow the attacker to cause a NULL pointer dereference, resulting in a crash of the iosd process. This triggers a reload of the device.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.16% Top 25%
Vendor Advisory cisco.com
Affected: Cisco Cisco IOS 15.0(1)XA2
Published at:
Updated at:

References

Link Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-sip-dos vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-12654?
CVE-2019-12654 has been scored as a high severity vulnerability.
How to fix CVE-2019-12654?
To fix CVE-2019-12654, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-12654 being actively exploited in the wild?
It is possible that CVE-2019-12654 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-12654?
CVE-2019-12654 affects Cisco Cisco IOS 15.0(1)XA2.
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