7.8

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 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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Cisco ≫ Ios Xe Version 15.6(1)s4.2
   Cisco ≫ 1000 Integrated Services Router Version -
   Cisco ≫ 1100 Integrated Services Router Version -
   Cisco ≫ 4000 Integrated Services Router Version -
   Cisco ≫ 4221 Integrated Services Router Version -
   Cisco ≫ 4321 Integrated Services Router Version -
   Cisco ≫ 4331 Integrated Services Router Version -
   Cisco ≫ 4351 Integrated Services Router Version -
   Cisco ≫ 4431 Integrated Services Router Version -
   Cisco ≫ 4451-x Integrated Services Router Version -
   Cisco ≫ Asr 1000 Version -
   Cisco ≫ Asr 1001-hx Version -
   Cisco ≫ Asr 1001-x Version -
   Cisco ≫ Asr 1002-hx Version -
   Cisco ≫ Asr 1002-x Version -
   Cisco ≫ Cloud Services Router 1000v Version -
   Cisco ≫ Integrated Services Virtual Router Version -
Cisco ≫ Ios Xe Version 16.3.8
   Cisco ≫ 1000 Integrated Services Router Version -
   Cisco ≫ 1100 Integrated Services Router Version -
   Cisco ≫ 4000 Integrated Services Router Version -
   Cisco ≫ 4221 Integrated Services Router Version -
   Cisco ≫ 4321 Integrated Services Router Version -
   Cisco ≫ 4331 Integrated Services Router Version -
   Cisco ≫ 4351 Integrated Services Router Version -
   Cisco ≫ 4431 Integrated Services Router Version -
   Cisco ≫ 4451-x Integrated Services Router Version -
   Cisco ≫ Asr 1000 Version -
   Cisco ≫ Asr 1001-hx Version -
   Cisco ≫ Asr 1001-x Version -
   Cisco ≫ Asr 1002-hx Version -
   Cisco ≫ Asr 1002-x Version -
   Cisco ≫ Cloud Services Router 1000v Version -
   Cisco ≫ Integrated Services Virtual Router Version -
Cisco ≫ Ios Xe Version 16.9.1
   Cisco ≫ 1000 Integrated Services Router Version -
   Cisco ≫ 1100 Integrated Services Router Version -
   Cisco ≫ 4000 Integrated Services Router Version -
   Cisco ≫ 4221 Integrated Services Router Version -
   Cisco ≫ 4321 Integrated Services Router Version -
   Cisco ≫ 4331 Integrated Services Router Version -
   Cisco ≫ 4351 Integrated Services Router Version -
   Cisco ≫ 4431 Integrated Services Router Version -
   Cisco ≫ 4451-x Integrated Services Router Version -
   Cisco ≫ Asr 1000 Version -
   Cisco ≫ Asr 1001-hx Version -
   Cisco ≫ Asr 1001-x Version -
   Cisco ≫ Asr 1002-hx Version -
   Cisco ≫ Asr 1002-x Version -
   Cisco ≫ Cloud Services Router 1000v Version -
   Cisco ≫ Integrated Services Virtual Router Version -
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 1.98% 0.78
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NIST 7.8 10 6.9
AV:N/AC:L/Au:N/C:N/I:N/A:C
Cisco PSIRT 8.6 3.9 4
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-sip-dos
Vendor Advisory