Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2019-1922

Severity CVSS v4.0:
Pending analysis
Type:
CWE-476 NULL Pointer Dereference
Publication date:
06/07/2019
Last modified:
09/10/2019

Description

A vulnerability in Cisco SIP IP Phone Software for Cisco IP Phone 7800 Series and 8800 Series could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected phone. The vulnerability is due to insufficient validation of input Session Initiation Protocol (SIP) packets. An attacker could exploit this vulnerability by altering the SIP replies that are sent to the affected phone during the registration process. A successful exploit could allow the attacker to cause the phone to reboot and not complete the registration process.

Impact

Vector 3.x
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete

Base Score 2.0
7.80
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:ip_conference_phone_7832_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ip_conference_phone_7832:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ip_conference_phone_8832_firmware:11.5\(1\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:ip_conference_phone_8832_firmware:12.5\(1\):*:*:*:*:*:*:*
cpe:2.3:h:cisco:ip_conference_phone_8832:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ip_phone_7811_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ip_phone_7811:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ip_phone_7821_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ip_phone_7821:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ip_phone_7841_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ip_phone_7841:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ip_phone_7861_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ip_phone_7861:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ip_phone_8811_firmware:11.5\(1\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:ip_phone_8811_firmware:12.5\(1\):*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools