CVE-2019-12654 — Cisco IOS and IOS XE Software Session Initiation Protocol Denial of Service Vulnerability
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 a…
Published: 2019-09-25 · CVSS: 8.6 · CVSS 3.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7