cisco-sa-aaa-Yx47ZT8Q: Cisco IOS XE Software NETCONF and RESTCONF Authentication Bypass Vulnerability

First published: Wed Sep 22 2021(Updated: )

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: 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. Cisco has released software updates that address this vulnerability. There are workarounds that address this vulnerability. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aaa-Yx47ZT8Q This advisory is part of the September 2021 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: September 2021 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication.

Credit: This vulnerability was found during the resolution a Cisco TAC support case

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

• agent/type
• agent/event
• agent/last-modified-date
• agent/first-publish-date
• collector/cisco-advisory
• source/Cisco
• agent/title
• agent/references
• agent/remedy
• agent/severity
• agent/weakness
• agent/author
• agent/description
• agent/source
• agent/softwarecombine
• agent/tags
• agent/guess-ai
• agent/software-canonical-lookup
• agent/software-canonical-lookup-request
• vendor/cisco
• canonical/cisco ios and ios xe software