Executive Summary
| Summary | |
|---|---|
| Title | Cisco Expressway Series and TelePresence VCS Denial of Service Vulnerability |
| Informations | |||
|---|---|---|---|
| Name | cisco-sa-20170125-expressway | First vendor Publication | 2017-01-25 |
| Vendor | Cisco | Last vendor Modification | 2017-01-25 |
| Severity (Vendor) | N/A | Revision | 1.0 |
Security-Database Scoring CVSS v3
| Cvss vector : N/A | |||
|---|---|---|---|
| Overall CVSS Score | NA | ||
| Base Score | NA | Environmental Score | NA |
| impact SubScore | NA | Temporal Score | NA |
| Exploitabality Sub Score | NA | ||
| Calculate full CVSS 3.0 Vectors scores | |||
Security-Database Scoring CVSS v2
| Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:C) | |||
|---|---|---|---|
| Cvss Base Score | 7.8 | Attack Range | Network |
| Cvss Impact Score | 6.9 | Attack Complexity | Low |
| Cvss Expoit Score | 10 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| A vulnerability in the received packet parser of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) software could allow an unauthenticated, remote attacker to cause a reload of the affected system, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient size validation of user-supplied data. An attacker could exploit this vulnerability by sending crafted H.224 data in Real-Time Transport Protocol (RTP) packets in an H.323 call. An exploit could allow the attacker to overflow a buffer in a cache that belongs to the received packet parser, which will result in a crash of the application, resulting in a DoS condition. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170125-expressway BEGIN PGP SIGNATURE iQIVAwUBWIeDZq89gD3EAJB5AQJoOhAAm8pNabl5Kr9d+LAe4IluOsqyeHf2gMg0 drcfsdA36rLpGDHkjNrY8bLkOpC1CG+XM0DNTcRztggya05W4EiI26DmFyxlIWyR bVI6h5VcTO4TpqNRrIYq9+iqEV2oKKTLNcBn5YCS0qU2dwGoN882cFoUsgKQcnCj etLfzRByCEpAye02Lz8bZFRuRdPe98GCqxo7mSnZzxQNtiUfN1LfUvlryoeDh01J d0oDQy8fsOtoKfWJi6DtZwZO79ySJ3Z6FDp03Xd2OqJmWNCMfYYkmzKMrfMI/Jyo l1Ze70epM9SJyxZp0h5dsSDryCMQdBvdwlhQuk84Dnu1hZOTcM2d88KhWIEpiUGo RcVQsAHMMkqHZYz14uy1bRc5Y0QxRu8WooSVQsDofSOJD/p33aDGudgnPZwyEvQQ V2w5oQ29jEiInPd+sadpBUtVcq2/EI79qJK9PaLmx7ML3lZmKynXfwCyWbS5o91q orsl7/+/EH+ty3VKF0c6x8n5tnRMTEfaD+bL7akjGaespehEL7t5qQiIHIBxWleX jXpYh5NeoVPGARMoQt6KtDsbjPY0I4nVbb5kTRoKMQ/9kZ3H0FAwxUwkKAnEVt6C g7USmB32lBaSCqnKAuRzOVz8bSy/6rdG9Br7bTZ8ezQatOCZBgmu5cBZ5yNVTxsb aifANu7jBdc= =fBku END PGP SIGNATURE _______________________________________________ cust-security-announce mailing list cust-security-announce@cisco.com To unsubscribe, send the command "unsubscribe" in the subject of your message to cust-security-announce-leave@cisco.com |
Original Source
| Url : http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco (...) |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 50 % | CWE-119 | Failure to Constrain Operations within the Bounds of a Memory Buffer |
| 50 % | CWE-20 | Improper Input Validation |
CPE : Common Platform Enumeration
Snort® IPS/IDS
| Date | Description |
|---|---|
| 2017-01-26 | Cisco Expressway and TelePresence VCS denial of service attempt RuleID : 41415 - Revision : 1 - Type : PROTOCOL-VOIP |
Nessus® Vulnerability Scanner
| Date | Description |
|---|---|
| 2017-02-22 | Name : A video conferencing application running on the remote host is affected by a ... File : cisco_telepresence_vcs_sa_20170125-expressway.nasl - Type : ACT_GATHER_INFO |
Alert History
| Date | Informations |
|---|---|
| 2017-02-27 21:27:53 |
|
| 2017-02-23 13:25:30 |
|
| 2017-01-25 21:21:02 |
|
