Executive Summary
| Informations | |||
|---|---|---|---|
| Name | CVE-2019-1721 | First vendor Publication | 2019-04-17 |
| Vendor | Cve | Last vendor Modification | 2020-10-07 |
Security-Database Scoring CVSS v3
| Cvss vector : CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | |||
|---|---|---|---|
| Overall CVSS Score | 6.5 | ||
| Base Score | 6.5 | Environmental Score | 6.5 |
| impact SubScore | 3.6 | Temporal Score | 6.5 |
| Exploitabality Sub Score | 2.8 | ||
| Attack Vector | Network | Attack Complexity | Low |
| Privileges Required | Low | User Interaction | None |
| Scope | Unchanged | Confidentiality Impact | None |
| Integrity Impact | None | Availability Impact | High |
| Calculate full CVSS 3.0 Vectors scores | |||
Security-Database Scoring CVSS v2
| Cvss vector : (AV:N/AC:L/Au:S/C:N/I:N/A:C) | |||
|---|---|---|---|
| Cvss Base Score | 6.8 | Attack Range | Network |
| Cvss Impact Score | 6.9 | Attack Complexity | Low |
| Cvss Expoit Score | 8 | Authentication | Requires single instance |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| A vulnerability in the phone book feature of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow an authenticated, remote attacker to cause the CPU to increase to 100% utilization, causing a denial of service (DoS) condition on an affected system. The vulnerability is due to improper handling of the XML input. An attacker could exploit this vulnerability by sending a Session Initiation Protocol (SIP) message with a crafted XML payload to an affected device. A successful exploit could allow the attacker to exhaust CPU resources, resulting in a DoS condition. Manual intervention may be required to recover the device. This vulnerability is fixed in Cisco Expressway Series and Cisco TelePresence Video Communication Server Releases X12.5.1 and later. |
Original Source
| Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-1721 |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-20 | Improper Input Validation |
CPE : Common Platform Enumeration
Snort® IPS/IDS
| Date | Description |
|---|---|
| 2020-12-05 | Cisco VCS exponential XML entity expansion attack attempt RuleID : 49858 - Revision : 1 - Type : PROTOCOL-VOIP |
Sources (Detail)
| Source | Url |
|---|---|
| BID | http://www.securityfocus.com/bid/108016 |
| CISCO | https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-s... |
Alert History
| Date | Informations |
|---|---|
| 2021-05-04 13:32:20 |
|
| 2021-04-22 02:46:26 |
|
| 2020-12-05 21:23:47 |
|
| 2020-10-08 00:22:47 |
|
| 2020-05-23 02:26:28 |
|
| 2019-10-10 05:21:01 |
|
| 2019-06-13 12:10:07 |
|
| 2019-04-23 17:19:03 |
|
| 2019-04-22 21:19:19 |
|
| 2019-04-19 21:19:28 |
|
| 2019-04-18 09:19:12 |
|
