Buffer overflow in Cisco Webex Event Center
CVE-2017-6753
A vulnerability in Cisco WebEx browser extensions for Google Chrome and Mozilla Firefox 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, Cisco WebEx Centers (Meeting Center, Event Center, Training Center, and Support Center), and Cisco WebEx Meetings when they are running on Microsoft Windows. The vulnerability is due to a design defect in the extension. An attacker who 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. The following versions of the Cisco WebEx browser extensions are affected: Versions prior to 1.0.12 of the Cisco WebEx extension on Google Chrome, Versions prior to 1.0.12 of the Cisco WebEx extension on Mozilla Firefox. Cisco Bug IDs: CSCvf15012 CSCvf15020 CSCvf15030 CSCvf15033 CSCvf15036 CSCvf15037.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.060 (93.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 93.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.060 · newest: 0.060 · change: 0.000
Affected products
- Cisco Webex Event Center — versions t30_base, t31_base, t32_base
- Cisco Webex Meeting Center — versions t30_base, t31_base, t32_base
- Cisco Webex Meetings — versions t30_base
- Cisco Webex Meetings Server — versions 1.1_base, 1.5.1.6, 1.5.1.131
- Cisco Webex Meetings Server 2.0 — versions mr2, mr3, mr4
- Cisco Webex Meetings Server 2.0 Mr8 Patch — versions 1
- Cisco Webex Meetings Server 2.0 Mr9 Patch — versions 1, 2, 3
- Cisco Webex Meetings Server 2.5 — versions mr1, mr2, mr3
- Cisco Webex Meetings Server 2.5 Mr2 Patch — versions 1
- Cisco Webex Meetings Server 2.5 Mr5 Patch — versions 1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securitytracker.com/id/1038911 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securityfocus.com/bid/99614 (VDB Entry, Third Party Advisory, vdb-entry)
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170717… (Vendor Advisory)
- www.securitytracker.com/id/1038910 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securitytracker.com/id/1038909 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2017-6753?
- CVE-2017-6753 is a high-severity vulnerability in Cisco Webex Event Center, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2017-07-25.
- How severe is CVE-2017-6753?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2017-6753 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.