PT-2019-3321 · Cisco · Cisco Ios Xe+1

Published 2019-09-25 · Updated 2023-05-22 · CVE-2019-12654

Positive Technologies (AI Summary)

CVSS v3.1

8.6

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Cisco IOS and IOS XE Software (affected versions not specified)

Description A vulnerability in the common Session Initiation Protocol (SIP) library 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, causing a NULL pointer dereference and resulting in a crash of the iosd process.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2019-03428

CVE-2019-12654

Affected Products

Cisco Ios

Cisco Ios Xe

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2019-12654 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-sip-dos · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-12654 · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-03428 · Security Note