7.5
HIGH
CVE-2019-1635
"Cisco SIP Software XML Payload Parsing Remote DoS 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.

INFO

Published Date :

May 3, 2019, 3:29 p.m.

Last Modified :

Nov. 21, 2024, 4:36 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2019-1635 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Cisco ip_conference_phone_8832_firmware
2 Cisco ip_phone_7811_firmware
3 Cisco ip_phone_7821_firmware
4 Cisco ip_phone_7841_firmware
5 Cisco ip_phone_7861_firmware
6 Cisco ip_phone_8811_firmware
7 Cisco ip_phone_8841_firmware
8 Cisco ip_phone_8845_firmware
9 Cisco ip_phone_8851_firmware
10 Cisco ip_phone_8861_firmware
11 Cisco ip_phone_8865_firmware
12 Cisco wireless_ip_phone_8821_firmware
13 Cisco wireless_ip_phone_8821-ex_firmware
14 Cisco ip_conference_phone_7832_firmware
15 Cisco unified_ip_8831_conference_phone1_firmware
16 Cisco unified_ip_8831_conference_phone_for_third-party_call_control2_firmware
17 Cisco ip_phone_7861
18 Cisco ip_phone_8851
19 Cisco ip_phone_7811
20 Cisco ip_phone_7821
21 Cisco ip_phone_7841
22 Cisco ip_phone_8811
23 Cisco ip_phone_8841
24 Cisco ip_phone_8845
25 Cisco ip_phone_8861
26 Cisco ip_phone_8865
27 Cisco ip_conference_phone_7832
28 Cisco ip_conference_phone_8832
29 Cisco unified_ip_8831_conference_phone1
30 Cisco unified_ip_8831_conference_phone_for_third-party_call_control2
31 Cisco wireless_ip_phone_8821
32 Cisco wireless_ip_phone_8821-ex
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2019-1635.

URL Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-phone-sip-xml-dos Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-phone-sip-xml-dos Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2019-1635 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2019-1635 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-phone-sip-xml-dos
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Oct. 16, 2020

    Action Type Old Value New Value
    Removed CVSS V3 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Removed CWE NIST CWE-399
    Removed CWE NIST CWE-388
    Added CWE NIST CWE-755
  • CVE Modified by [email protected]

    Oct. 09, 2019

    Action Type Old Value New Value
    Added CVSS V3 Cisco Systems, Inc. AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Added CWE Cisco Systems, Inc. CWE-399
  • Initial Analysis by [email protected]

    May. 07, 2019

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:N/A:C)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-phone-sip-xml-dos No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-phone-sip-xml-dos Vendor Advisory
    Added CWE CWE-388
    Added CWE CWE-399
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_conference_phone_7832_firmware:9.3\(4\)sr3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_conference_phone_7832_firmware:10.3\(1\)sr4b:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_conference_phone_7832_firmware:11.0\(4\)sr2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_conference_phone_7832_firmware:12.1\(1\)sr1:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:ip_conference_phone_7832:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_conference_phone_8832_firmware:9.3\(4\)sr3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_conference_phone_8832_firmware:10.3\(1\)sr4b:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_conference_phone_8832_firmware:11.0\(4\)sr2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_conference_phone_8832_firmware:12.1\(1\)sr1:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:ip_conference_phone_8832:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_phone_7811_firmware:9.3\(4\)sr3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_7811_firmware:10.3\(1\)sr4b:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_7811_firmware:11.0\(4\)sr2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_7811_firmware:12.1\(1\)sr1:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:ip_phone_7811:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_phone_7821_firmware:9.3\(4\)sr3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_7821_firmware:10.3\(1\)sr4b:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_7821_firmware:11.0\(4\)sr2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_7821_firmware:12.1\(1\)sr1:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:ip_phone_7821:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_phone_7841_firmware:9.3\(4\)sr3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_7841_firmware:10.3\(1\)sr4b:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_7841_firmware:11.0\(4\)sr2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_7841_firmware:12.1\(1\)sr1:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:ip_phone_7841:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_phone_7861_firmware:9.3\(4\)sr3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_7861_firmware:10.3\(1\)sr4b:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_7861_firmware:11.0\(4\)sr2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_7861_firmware:12.1\(1\)sr1:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:ip_phone_7861:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_phone_8811_firmware:9.3\(4\)sr3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_8811_firmware:10.3\(1\)sr4b:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_8811_firmware:11.0\(4\)sr2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_8811_firmware:12.1\(1\)sr1:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:ip_phone_8811:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_phone_8841_firmware:9.3\(4\)sr3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_8841_firmware:10.3\(1\)sr4b:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_8841_firmware:11.0\(4\)sr2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_8841_firmware:12.1\(1\)sr1:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:ip_phone_8841:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_phone_8845_firmware:9.3\(4\)sr3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_8845_firmware:10.3\(1\)sr4b:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_8845_firmware:11.0\(4\)sr2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_8845_firmware:12.1\(1\)sr1:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:ip_phone_8845:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_phone_8851_firmware:9.3\(4\)sr3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_8851_firmware:10.3\(1\)sr4b:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_8851_firmware:11.0\(4\)sr2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_8851_firmware:12.1\(1\)sr1:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:ip_phone_8851:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_phone_8861_firmware:9.3\(4\)sr3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_8861_firmware:10.3\(1\)sr4b:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_8861_firmware:11.0\(4\)sr2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_8861_firmware:12.1\(1\)sr1:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:ip_phone_8861:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_phone_8865_firmware:9.3\(4\)sr3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_8865_firmware:10.3\(1\)sr4b:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_8865_firmware:11.0\(4\)sr2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ip_phone_8865_firmware:12.1\(1\)sr1:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:ip_phone_8865:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:unified_ip_8831_conference_phone1_firmware:9.3\(4\)sr3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:unified_ip_8831_conference_phone1_firmware:10.3\(1\)sr4b:*:*:*:*:*:*:* *cpe:2.3:o:cisco:unified_ip_8831_conference_phone1_firmware:11.0\(4\)sr2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:unified_ip_8831_conference_phone1_firmware:12.1\(1\)sr1:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:unified_ip_8831_conference_phone1:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:unified_ip_8831_conference_phone_for_third-party_call_control2_firmware:9.3\(4\)sr3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:unified_ip_8831_conference_phone_for_third-party_call_control2_firmware:10.3\(1\)sr4b:*:*:*:*:*:*:* *cpe:2.3:o:cisco:unified_ip_8831_conference_phone_for_third-party_call_control2_firmware:11.0\(4\)sr2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:unified_ip_8831_conference_phone_for_third-party_call_control2_firmware:12.1\(1\)sr1:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:unified_ip_8831_conference_phone_for_third-party_call_control2:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:wireless_ip_phone_8821_firmware:9.3\(4\)sr3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:wireless_ip_phone_8821_firmware:10.3\(1\)sr4b:*:*:*:*:*:*:* *cpe:2.3:o:cisco:wireless_ip_phone_8821_firmware:11.0\(4\)sr2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:wireless_ip_phone_8821_firmware:12.1\(1\)sr1:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:wireless_ip_phone_8821:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:wireless_ip_phone_8821-ex_firmware:9.3\(4\)sr3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:wireless_ip_phone_8821-ex_firmware:10.3\(1\)sr4b:*:*:*:*:*:*:* *cpe:2.3:o:cisco:wireless_ip_phone_8821-ex_firmware:11.0\(4\)sr2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:wireless_ip_phone_8821-ex_firmware:12.1\(1\)sr1:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:wireless_ip_phone_8821-ex:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2019-1635 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2019-1635 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.16 }} 0.00%

score

0.50670

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability