Access of Uninitialized Pointer in Cisco Systems, Inc products - CVE-2021-1619
Published: September 23, 2021
Vulnerability identifier: #VU56836
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-1619
CWE-ID: CWE-824
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to an uninitialized pointer in the authentication, authorization, and accounting (AAA) function. A remote attacker can send a series of NETCONF or RESTCONF requests and use NETCONF or RESTCONF to install, manipulate, or delete the configuration of a network device
Affected software
Cisco Catalyst 4000 Series Switches
Cisco 2800 Series Integrated Services Routers
Cisco IOS XE
Cisco 2800 Series Integrated Services Routers
Cisco IOS XE
How to mitigate CVE-2021-1619
Install updates from vendor's website.
Cisco IOS XE - addressed in versions 16.9.8, 16.12.6, 17.3.1, 17.3.2a, 17.3.3, 17.3.4, 17.4.1, 17.5.1, 17.6.1