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Cisco IOS XR Software Unauthorized Information Disclosure Vulnerability

cisco-sa-ios-infodisc-4mtm9Gyt · Medium · Published · Updated

A vulnerability in the CLI parser of Cisco IOS XR Software could allow an authenticated, local attacker to view more information than their privileges allow. The vulnerability is due to insufficient application of restrictions during the execution of a specific command. An attacker could exploit this vulnerability by using a specific command at the command line. A successful exploit could allow the attacker to obtain sensitive information within the configuration that otherwise might not have been accessible beyond the privileges of the invoking user. 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-ios-infodisc-4mtm9Gyt

Cisco advisory ·CSAF JSON

Workarounds

There is a workaround that addresses this vulnerability.

Administrators can configure the following to limit the information that is displayed to the unprivileged user:

aaa authorization exec default local

CVEsCVE-2021-1128
Cisco Bug IDsCSCvt41022
CVSS ScoreBase 5.5
Base 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:X/RL:X/RC:X
Product Names From Source
Cisco IOS XR Software

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