Cisco IP Phones 7800 Series and 8800 Series Session Initiation Protocol XML Denial of Service (CVE-2019-1635)

high Tenable OT Security Plugin ID 502112

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A vulnerability in the call-handling functionality of Session Initiation Protocol (SIP) Software for Cisco IP Phone 7800 Series and 8800 Series could allow an unauthenticated, remote attacker to cause an affected phone to reload unexpectedly, resulting in a temporary denial of service (DoS) condition. The vulnerability is due to incomplete error handling when XML data within a SIP packet is parsed.
An attacker could exploit this vulnerability by sending a SIP packet that contains a malicious XML payload to an affected phone. A successful exploit could allow the attacker to cause the affected phone to reload unexpectedly, resulting in a temporary DoS condition.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

Refer to the vendor advisory.

Plugin Details

Severity: High

ID: 502112

Version: 1.1

Type: remote

Family: Tenable.ot

Published: 3/18/2024

Updated: 3/18/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2019-1635

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:ip_phone_7811_firmware:10.3%281%29sr4b, cpe:/o:cisco:ip_phone_7811_firmware:11.0%284%29sr2, cpe:/o:cisco:ip_phone_7811_firmware:12.1%281%29sr1, cpe:/o:cisco:ip_phone_7811_firmware:9.3%284%29sr3, cpe:/o:cisco:ip_phone_7821_firmware:10.3%281%29sr4b, cpe:/o:cisco:ip_phone_7821_firmware:11.0%284%29sr2, cpe:/o:cisco:ip_phone_7821_firmware:12.1%281%29sr1, cpe:/o:cisco:ip_phone_7821_firmware:9.3%284%29sr3, cpe:/o:cisco:ip_phone_7841_firmware:10.3%281%29sr4b, cpe:/o:cisco:ip_phone_7841_firmware:11.0%284%29sr2, cpe:/o:cisco:ip_phone_7841_firmware:12.1%281%29sr1, cpe:/o:cisco:ip_phone_7841_firmware:9.3%284%29sr3, cpe:/o:cisco:ip_phone_7861_firmware:10.3%281%29sr4b, cpe:/o:cisco:ip_phone_7861_firmware:11.0%284%29sr2, cpe:/o:cisco:ip_phone_7861_firmware:12.1%281%29sr1, cpe:/o:cisco:ip_phone_7861_firmware:9.3%284%29sr3, cpe:/o:cisco:ip_phone_8811_firmware:10.3%281%29sr4b, cpe:/o:cisco:ip_phone_8811_firmware:11.0%284%29sr2, cpe:/o:cisco:ip_phone_8811_firmware:12.1%281%29sr1, cpe:/o:cisco:ip_phone_8811_firmware:9.3%284%29sr3, cpe:/o:cisco:ip_phone_8841_firmware:10.3%281%29sr4b, cpe:/o:cisco:ip_phone_8841_firmware:11.0%284%29sr2, cpe:/o:cisco:ip_phone_8841_firmware:12.1%281%29sr1, cpe:/o:cisco:ip_phone_8841_firmware:9.3%284%29sr3, cpe:/o:cisco:ip_phone_8845_firmware:10.3%281%29sr4b, cpe:/o:cisco:ip_phone_8845_firmware:11.0%284%29sr2, cpe:/o:cisco:ip_phone_8845_firmware:12.1%281%29sr1, cpe:/o:cisco:ip_phone_8845_firmware:9.3%284%29sr3, cpe:/o:cisco:ip_phone_8851_firmware:10.3%281%29sr4b, cpe:/o:cisco:ip_phone_8851_firmware:11.0%284%29sr2, cpe:/o:cisco:ip_phone_8865_firmware:9.3%284%29sr3, cpe:/o:cisco:wireless_ip_phone_8821-ex_firmware:10.3%281%29sr4b, cpe:/o:cisco:wireless_ip_phone_8821-ex_firmware:11.0%284%29sr2, cpe:/o:cisco:wireless_ip_phone_8821-ex_firmware:12.1%281%29sr1, cpe:/o:cisco:wireless_ip_phone_8821-ex_firmware:9.3%284%29sr3, cpe:/o:cisco:wireless_ip_phone_8821_firmware:10.3%281%29sr4b, cpe:/o:cisco:wireless_ip_phone_8821_firmware:11.0%284%29sr2, cpe:/o:cisco:wireless_ip_phone_8821_firmware:12.1%281%29sr1, cpe:/o:cisco:wireless_ip_phone_8821_firmware:9.3%284%29sr3, cpe:/o:cisco:ip_phone_8851_firmware:12.1%281%29sr1, cpe:/o:cisco:ip_phone_8851_firmware:9.3%284%29sr3, cpe:/o:cisco:ip_phone_8861_firmware:10.3%281%29sr4b, cpe:/o:cisco:ip_phone_8861_firmware:11.0%284%29sr2, cpe:/o:cisco:ip_phone_8861_firmware:12.1%281%29sr1, cpe:/o:cisco:ip_phone_8861_firmware:9.3%284%29sr3, cpe:/o:cisco:ip_phone_8865_firmware:10.3%281%29sr4b, cpe:/o:cisco:ip_phone_8865_firmware:11.0%284%29sr2, cpe:/o:cisco:ip_phone_8865_firmware:12.1%281%29sr1

Required KB Items: Tenable.ot/Cisco

Exploit Ease: No known exploits are available

Patch Publication Date: 5/3/2019

Vulnerability Publication Date: 5/3/2019

Reference Information

CVE: CVE-2019-1635

CWE: 755

Detections

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