PT-2021-2553 · Cisco · Cisco Ios Xe

Fabian Beck + 2 · Published 2021-03-24 · Updated 2022-08-05 · CVE-2021-1403

Positive Technologies (AI Summary)

CVSS v3.1

7.4

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: Cisco IOS XE Software (affected versions not specified)

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.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Insufficient Verification of Data Authenticity

Clickjacking

Weakness Enumeration

CWE-345

CWE-1021

Related Identifiers

BDU:2021-01961

CVE-2021-1403

Affected Products

Cisco Ios Xe

References · 6

• https://osv.dev/vulnerability/CVE-2021-1403 · Vendor Advisory
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-cswsh-FKk9AzT5 · Vendor Advisory
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-cswsh-FKk9AzT5 · Vendor Advisory
• https://safe-surf.ru/specialists/bulletins-nkcki/663955 · Security Note
• https://bdu.fstec.ru/vul/2021-01961 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-1403 · Security Note