7.8

CVE-2021-34768

Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Denial of Service Vulnerabilities

Multiple vulnerabilities in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Software for Cisco Catalyst 9000 Family Wireless Controllers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. These vulnerabilities are due to insufficient validation of CAPWAP packets. An attacker could exploit the vulnerabilities by sending a malformed CAPWAP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to crash and reload, resulting in a DoS condition.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Cisco ≫ Ios Xe Version 3.15.1xbs
   Cisco ≫ Catalyst 9800 Version -
   Cisco ≫ Catalyst 9800-40 Version -
   Cisco ≫ Catalyst 9800-40 Wireless Controller Version -
   Cisco ≫ Catalyst 9800-80 Version -
   Cisco ≫ Catalyst 9800-80 Wireless Controller Version -
   Cisco ≫ Catalyst 9800-cl Version -
   Cisco ≫ Catalyst 9800-l Version -
   Cisco ≫ Catalyst 9800-l-c Version -
   Cisco ≫ Catalyst 9800-l-f Version -
   Cisco ≫ Catalyst 9800 Embedded Wireless Controller Version -
Cisco ≫ Ios Xe Version 3.15.2xbs
   Cisco ≫ Catalyst 9800 Version -
   Cisco ≫ Catalyst 9800-40 Version -
   Cisco ≫ Catalyst 9800-40 Wireless Controller Version -
   Cisco ≫ Catalyst 9800-80 Version -
   Cisco ≫ Catalyst 9800-80 Wireless Controller Version -
   Cisco ≫ Catalyst 9800-cl Version -
   Cisco ≫ Catalyst 9800-l Version -
   Cisco ≫ Catalyst 9800-l-c Version -
   Cisco ≫ Catalyst 9800-l-f Version -
   Cisco ≫ Catalyst 9800 Embedded Wireless Controller Version -
Cisco ≫ Ios Xe Version 17.3.1
   Cisco ≫ Catalyst 9800 Version -
   Cisco ≫ Catalyst 9800-40 Version -
   Cisco ≫ Catalyst 9800-40 Wireless Controller Version -
   Cisco ≫ Catalyst 9800-80 Version -
   Cisco ≫ Catalyst 9800-80 Wireless Controller Version -
   Cisco ≫ Catalyst 9800-cl Version -
   Cisco ≫ Catalyst 9800-l Version -
   Cisco ≫ Catalyst 9800-l-c Version -
   Cisco ≫ Catalyst 9800-l-f Version -
   Cisco ≫ Catalyst 9800 Embedded Wireless Controller Version -
Cisco ≫ Ios Xe Version 17.3.2
   Cisco ≫ Catalyst 9800 Version -
   Cisco ≫ Catalyst 9800-40 Version -
   Cisco ≫ Catalyst 9800-40 Wireless Controller Version -
   Cisco ≫ Catalyst 9800-80 Version -
   Cisco ≫ Catalyst 9800-80 Wireless Controller Version -
   Cisco ≫ Catalyst 9800-cl Version -
   Cisco ≫ Catalyst 9800-l Version -
   Cisco ≫ Catalyst 9800-l-c Version -
   Cisco ≫ Catalyst 9800-l-f Version -
   Cisco ≫ Catalyst 9800 Embedded Wireless Controller Version -
Cisco ≫ Ios Xe Version 17.3.2a
   Cisco ≫ Catalyst 9800 Version -
   Cisco ≫ Catalyst 9800-40 Version -
   Cisco ≫ Catalyst 9800-40 Wireless Controller Version -
   Cisco ≫ Catalyst 9800-80 Version -
   Cisco ≫ Catalyst 9800-80 Wireless Controller Version -
   Cisco ≫ Catalyst 9800-cl Version -
   Cisco ≫ Catalyst 9800-l Version -
   Cisco ≫ Catalyst 9800-l-c Version -
   Cisco ≫ Catalyst 9800-l-f Version -
   Cisco ≫ Catalyst 9800 Embedded Wireless Controller Version -
Cisco ≫ Ios Xe Version 17.4.1
   Cisco ≫ Catalyst 9800 Version -
   Cisco ≫ Catalyst 9800-40 Version -
   Cisco ≫ Catalyst 9800-40 Wireless Controller Version -
   Cisco ≫ Catalyst 9800-80 Version -
   Cisco ≫ Catalyst 9800-80 Wireless Controller Version -
   Cisco ≫ Catalyst 9800-cl Version -
   Cisco ≫ Catalyst 9800-l Version -
   Cisco ≫ Catalyst 9800-l-c Version -
   Cisco ≫ Catalyst 9800-l-f Version -
   Cisco ≫ Catalyst 9800 Embedded Wireless Controller Version -
Cisco ≫ Ios Xe Version 17.5.1
   Cisco ≫ Catalyst 9800 Version -
   Cisco ≫ Catalyst 9800-40 Version -
   Cisco ≫ Catalyst 9800-40 Wireless Controller Version -
   Cisco ≫ Catalyst 9800-80 Version -
   Cisco ≫ Catalyst 9800-80 Wireless Controller Version -
   Cisco ≫ Catalyst 9800-cl Version -
   Cisco ≫ Catalyst 9800-l Version -
   Cisco ≫ Catalyst 9800-l-c Version -
   Cisco ≫ Catalyst 9800-l-f Version -
   Cisco ≫ Catalyst 9800 Embedded Wireless Controller Version -
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 1.39% 0.692
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NIST 7.8 10 6.9
AV:N/AC:L/Au:N/C:N/I:N/A:C
Cisco PSIRT 8.6 3.9 4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CWE-415 Double Free

The product calls free() twice on the same memory address.

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewlc-capwap-dos-gmNjdKOY
Vendor Advisory