Description:
Cisco released security advisories to address multiple vulnerabilities in Cisco devices and software. For information about the vulnerabilities and the attacking vectors, please refer to the corresponding security advisories at the vendor's website.
Affected Systems:
- Cisco AnyConnect Secure
- Cisco DNA Center
- Cisco Email Security Appliance
- Cisco Jabber
- Cisco Meeting Server API
- Cisco Small Business 200 Series Smart Switches
- Cisco Unified Communications Centre
- Cisco Web Security Appliance
- Cisco Webex Teams
For detailed information of the affected products, please refer to the section "Affected Products" of corresponding security advisory at vendor's website.
Impact:
Depending on the vulnerabilities being exploited, a successful exploitation could lead to arbitrary command execution, arbitrary code execution, cross-site scripting, denial of service, information disclosure, privilege escalation, spoofing or take control of affected system.
Recommendation:
Software updates for affected systems are now available. System administrators of affected systems should follow the recommendations provided by the product vendor and take immediate actions to mitigate the risk. For detailed information of the available patches, please refer to the section "Fixed Software" of corresponding security advisory at vendor's website.
System administrators should contact their product support vendors for the fixes and assistance.
More Information:
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-dos-hMhyDfb8
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-pos-dll-ff8j6dFv
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ciscosb-multivulns-Wwyb7s5E
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cuic-xss-csHUdtrL
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dnac-certvalid-USEj2CZk
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-wsa-cert-vali-n8L97RW
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-jabber-GuC5mLwG
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-meetingserver-dos-NzVWMMQT
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-teams-7ZMcXG99
- https://www.hkcert.org/security-bulletin/cisco-products-multiple-vulnerabilities_20210617
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1134
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1242
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1395
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1524
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1541 (to CVE-2021-1543)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1566 (to CVE-2021-1571)