CVE-2021-1403 - Insufficient Verification of Data Authenticity

Severity

74%

Complexity

27%

Confidentiality

66%

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.

CVSS 3.1 Base Score 7.4. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H).

CVSS 2.0 Base Score 7.1. CVSS Attack Vector: network. CVSS Attack Complexity: medium. CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:N/A:C).

Overview

Type

Cisco IOS

First reported 3 years ago

2021-03-24 20:15:00

Last updated 3 years ago

2021-03-29 20:08:00

Affected Software

Cisco IOS XE 16.3.4

16.3.4

Cisco IOS XE 16.3.5

16.3.5

Cisco IOS XE 16.3.7

16.3.7

Cisco IOS XE 16.3.8

16.3.8

Cisco IOS XE 16.4.2

16.4.2

Cisco IOS XE 16.4.3

16.4.3

Cisco IOS XE 16.5.1

16.5.1

Cisco IOS XE 16.5.1B

16.5.1b

Cisco IOS XE 16.5.2

16.5.2

Cisco IOS XE 16.5.3

16.5.3

Cisco IOS XE 16.6.4

16.6.4

Cisco IOS XE 16.6.4A

16.6.4a

Cisco IOS XE 16.6.4S

16.6.4s

Cisco IOS XE 16.6.5A

16.6.5a

Cisco IOS XE 16.6.5B

16.6.5b

Cisco IOS XE 16.6.6

16.6.6

Cisco IOS XE 16.6.7A

16.6.7a

Cisco IOS XE 16.6.8

16.6.8

Cisco IOS XE 16.7.1A

16.7.1a

Cisco IOS XE 16.7.1B

16.7.1b

Cisco IOS XE 16.7.3

16.7.3

Cisco IOS XE 16.7.4

16.7.4

Cisco IOS XE 16.8.1A

16.8.1a

Cisco IOS XE 16.8.1B

16.8.1b

Cisco IOS XE 16.8.1C

16.8.1c

Cisco IOS XE 16.8.1D

16.8.1d

Cisco IOS XE 16.8.1E

16.8.1e

Cisco IOS XE 16.8.1S

16.8.1s

Cisco IOS XE 16.8.2

16.8.2

Cisco IOS XE 16.8.3

16.8.3

Cisco IOS XE16.9.1

16.9.1

Cisco IOS XE 16.9.1A

16.9.1a

Cisco IOS XE 16.9.1B

16.9.1b

Cisco IOS XE 16.9.1C

16.9.1c

Cisco IOS XE 16.9.1D

16.9.1d

Cisco IOS XE 16.9.1S

16.9.1s

Cisco IOS XE 16.9.2

16.9.2

Cisco IOS XE 16.9.2A

16.9.2a

Cisco IOS XE 16.9.2S

16.9.2s

Cisco IOS XE 16.9.3

16.9.3

Cisco IOS XE 16.9.3A

16.9.3a

Cisco IOS XE 16.9.3H

16.9.3h

Cisco IOS XE 16.9.3S

16.9.3s

Cisco IOS XE 16.9.4C

16.9.4c

Cisco IOS XE 16.9.5

16.9.5

Cisco IOS XE 16.9.5F

16.9.5f

Cisco IOS XE 16.10.1

16.10.1

Cisco IOS XE 16.10.1A

16.10.1a

Cisco IOS XE 16.10.1B

16.10.1b

Cisco IOS XE 16.10.1C

16.10.1c

Cisco IOS XE 16.10.1D

16.10.1d

Cisco IOS XE 16.10.1E

16.10.1e

Cisco IOS XE 16.10.1F

16.10.1f

Cisco IOS XE 16.10.1G

16.10.1g

Cisco IOS XE 16.10.1S

16.10.1s

Cisco IOS XE 16.10.2

16.10.2

Cisco IOS XE 16.10.3

16.10.3

Cisco IOS XE 16.11.1

16.11.1

Cisco IOS XE 16.12.1

16.12.1

Cisco IOS XE 16.12.1Y

16.12.1y

Cisco IOS XE 16.12.2

16.12.2

Cisco IOS XE 16.12.2A

16.12.2a

Cisco IOS XE 16.12.4

16.12.4

Cisco IOS XE 17.1.1

17.1.1

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