CVE-2021-1403

Description

A vulnerability in the web UI feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to conduct a cross-site WebSocket hijacking (CSWSH) attack and cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient HTTP protections in the web UI on an affected device. An attacker could exploit this vulnerability by persuading an authenticated user of the web UI to follow a crafted link. A successful exploit could allow the attacker to corrupt memory on the affected device, forcing it to reload and causing a DoS condition.

Related CPE's

ociscoios_xe3.15.1xbs*******
vulnerable
ociscoios_xe3.15.2xbs*******
vulnerable
ociscoios_xe16.3.1*******
vulnerable
ociscoios_xe16.3.1a*******
vulnerable
ociscoios_xe16.3.2*******
vulnerable
ociscoios_xe16.3.3*******
vulnerable
ociscoios_xe16.3.4*******
vulnerable
ociscoios_xe16.3.5*******
vulnerable
ociscoios_xe16.3.5b*******
vulnerable
ociscoios_xe16.3.6*******
vulnerable

References

20210324 Cisco IOS XE Software Web UI Cross-Site WebSocket Hijacking Vulnerability

Vendor Advisory

CvssV3 impact

BaseSeverity

HIGH

ConfidentialityImpact

NONE

AttackComplexity

LOW

Scope

CHANGED

AttackVector

NETWORK

AvailabilityImpact

HIGH

IntegrityImpact

NONE

PrivilegesRequired

NONE

BaseScore

7.4

VectorString

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H

Version

3.1

UserInteraction

REQUIRED

CvssV2 impact

AccessComplexity

MEDIUM

ConfidentialityImpact

NONE

AvailabilityImpact

COMPLETE

IntegrityImpact

NONE

BaseScore

7.1

VectorString

AV:N/AC:M/Au:N/C:N/I:N/A:C

Version

2.0

AccessVector

NETWORK

Authentication

NONE