RCE in Cisco Webex Teams
CVE-2019-1636
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.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.469 (98.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Cisco Webex Teams — versions n/a
- Cisco Webex_teams — versions 3.0.4533
Weakness classification (CWE)
Public proof-of-concept exploits
References
- psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
- psirt@cisco.com (Third Party Advisory, vdb-entry, x_refsource_BID)
Frequently asked questions
- What is CVE-2019-1636?
- CVE-2019-1636 is a high-severity vulnerability in Cisco Webex Teams, classified under OS Command Injection. CVSS score: 7.8/10. Published 2019-01-23.
- How severe is CVE-2019-1636?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2019-1636 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.