CVE-2021-1619: cisco cisco ios xe software Access of Uninitialized Pointer

Vulnerability summary

CVE-2021-1619 is a critical (CVSS 9.8) Access of Uninitialized Pointer vulnerability in cisco cisco ios xe software. EPSS estimates a 1.76% chance of exploitation in the next 30 days, higher than 77.6% of scored vulnerabilities.

Timeline

1. 23-09-2021
   PublishedVulnerability first disclosed.
2. 07-11-2024
   Last modifiedVulnerability information updated.

Description

A vulnerability in the authentication, authorization, and accounting (AAA) function of Cisco IOS XE Software could allow an unauthenticated, remote attacker to bypass NETCONF or RESTCONF authentication and do either of the following: Install, manipulate, or delete the configuration of an affected device Cause memory corruption that results in a denial of service (DoS) on an affected device This vulnerability is due to an uninitialized variable. An attacker could exploit this vulnerability by sending a series of NETCONF or RESTCONF requests to an affected device. A successful exploit could allow the attacker to use NETCONF or RESTCONF to install, manipulate, or delete the configuration of a network device or to corrupt memory on the device, resulting a DoS.

• CWE-824Access of Uninitialized PointerThe product accesses or uses a pointer that has not been initialized.
• CWE-908Use of Uninitialized ResourceThe product uses or accesses a resource that has not been initialized.