8.6

CVE-2021-34768

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.

Data is provided by the National Vulnerability Database (NVD)
Cisco ≫ Ios Xe Version3.15.1xbs
   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 Version3.15.2xbs
   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 Version17.3.1
   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 Version17.3.2
   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 Version17.3.2a
   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 Version17.4.1
   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 Version17.5.1
   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 CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.47% 0.639
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 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
nvd@nist.gov 7.8 10 6.9
AV:N/AC:L/Au:N/C:N/I:N/A:C
psirt@cisco.com 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, potentially leading to modification of unexpected memory locations.