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Vulnerability of Cisco IOS XR: information disclosure via CLI Parser

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via CLI Parser of Cisco IOS XR, in order to obtain sensitive information.
Impacted products: Cisco ASR, IOS XR Cisco, Cisco Router.
Severity of this bulletin: 1/4.
Creation date: 03/02/2021.
Références of this threat: CERTFR-2021-AVI-082, cisco-sa-ios-infodisc-4mtm9Gyt, CSCvt41022, CVE-2021-1128, VIGILANCE-VUL-34473.

Description of the vulnerability 

An attacker can bypass access restrictions to data via CLI Parser of Cisco IOS XR, in order to obtain sensitive information.
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This security weakness impacts software or systems such as Cisco ASR, IOS XR Cisco, Cisco Router.

Our Vigil@nce team determined that the severity of this threat bulletin is low.

The trust level is of type confirmed by the editor, with an origin of user account.

An attacker with a expert ability can exploit this threat.

Solutions for this threat 

Cisco IOS XR: solution CSCvt41022.
The solution is described on the Cisco site:
  https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvt41022
  https://tools.cisco.com/bugsearch/bug/CSCvt41022
  https://tools.cisco.com/quickview/bug/CSCvt41022
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