CVE-2017-3823
A vulnerability in these Cisco WebEx browser extensions could allow an unauthenticated, remote attacker to execute arbitrary code with the privileges of the affected browser on an affected system.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 27.2%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
An issue was discovered in the Cisco WebEx Extension before 1.0.7 on Google Chrome, the ActiveTouch General Plugin Container before 106 on Mozilla Firefox, the GpcContainer Class ActiveX control plugin before 10031.6.2017.0126 on Internet Explorer, and the Download Manager ActiveX control plugin before 2.1.0.10 on Internet Explorer. A vulnerability in these Cisco WebEx browser extensions could allow an unauthenticated, remote attacker to execute arbitrary code with the privileges of the affected browser on an affected system. This vulnerability affects the browser extensions for Cisco WebEx Meetings Server and Cisco WebEx Centers (Meeting Center, Event Center, Training Center, and Support Center) when they are running on Microsoft Windows. The vulnerability is a design defect in an application programing interface (API) response parser within the extension. An attacker that can convince an affected user to visit an attacker-controlled web page or follow an attacker-supplied link with an affected browser could exploit the vulnerability. If successful, the attacker could execute arbitrary code with the privileges of the affected browser.
- CVSS 3.0
- 8.8 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 27.23% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- cisco/activetouch general plugin container · cisco/download manager · cisco/gpccontainer class · cisco/webex · cisco/webex meetings server · cisco/webex meeting center
- Source
- psirt@cisco.com
EPSS 27.2% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.securityfocus.com/bid/95737Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037680
- https://0patch.blogspot.com/2017/01/micropatching-remote-code-execution-in.html
- https://blog.filippo.io/webex-extension-vulnerability/
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1096Technical Description, Third Party Advisory
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1100
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170124-webexVendor Advisory
- https://www.kb.cert.org/vuls/id/909240
- http://www.securityfocus.com/bid/95737Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037680
- https://0patch.blogspot.com/2017/01/micropatching-remote-code-execution-in.html
- https://blog.filippo.io/webex-extension-vulnerability/
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1096Technical Description, Third Party Advisory
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1100
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170124-webexVendor Advisory
- https://www.kb.cert.org/vuls/id/909240
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.