CVE-2019-1636: Cisco Webex Teams URI Handler Insecure Library Loading Vulnerability
First published: Wed Jan 23 2019(Updated: )
A vulnerability in the Cisco Webex Teams client, formerly Cisco Spark, could allow an attacker to execute arbitrary commands on a targeted system. This vulnerability is due to unsafe search paths used by the application URI that is defined in Windows operating systems. An attacker could exploit this vulnerability by convincing a targeted user to follow a malicious link. Successful exploitation could cause the application to load libraries from the directory targeted by the URI link. The attacker could use this behavior to execute arbitrary commands on the system with the privileges of the targeted user if the attacker can place a crafted library in a directory that is accessible to the vulnerable system.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Webex Teams | =3.0.4533 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2019-1636?
The severity of CVE-2019-1636 is critical, with a CVSS score of 7.8.
How can an attacker exploit CVE-2019-1636?
An attacker can exploit CVE-2019-1636 by executing arbitrary commands on a targeted system.
Which software is affected by CVE-2019-1636?
Cisco Webex Teams version 3.0.4533 is affected by CVE-2019-1636.
Where can I find more information about CVE-2019-1636?
More information about CVE-2019-1636 can be found at the following references: http://www.securityfocus.com/bid/106718, https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190123-webex-teams.
How can I fix CVE-2019-1636?
To fix CVE-2019-1636, it is recommended to upgrade Cisco Webex Teams to a patched version.
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