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CiscoCVE-2021-34770

HistorySep 23, 2021 - 3:15 a.m.

CVE-2021-34770

2021-09-2303:15:20

CWE-787

CWE-122

cisco

web.nvd.nist.gov

cve-2021-34770

vulnerability

capwap protocol

cisco

ios xe software

catalyst 9000

wireless controllers

remote code execution

dos

nvd

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:S/C:C/I:C/A:C

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.7

Confidence

High

EPSS

0.002

Percentile

55.7%

JSON

A vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Software for Cisco Catalyst 9000 Family Wireless Controllers could allow an unauthenticated, remote attacker to execute arbitrary code with administrative privileges or cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a logic error that occurs during the validation of CAPWAP packets. An attacker could exploit this vulnerability by sending a crafted CAPWAP packet to an affected device. A successful exploit could allow the attacker to execute arbitrary code with administrative privileges or cause the affected device to crash and reload, resulting in a DoS condition.

Affected configurations

Nvd

Node

ciscoios_xe

ciscoios_xeMatch3.15.1xbs

ciscoios_xeMatch3.15.2xbs

ciscoios_xeMatch16.6.4s

ciscoios_xeMatch16.10.1

ciscoios_xeMatch16.10.1e

ciscoios_xeMatch16.10.1s

ciscoios_xeMatch16.11.1

ciscoios_xeMatch16.11.1a

ciscoios_xeMatch16.11.1b

ciscoios_xeMatch16.11.1c

ciscoios_xeMatch16.11.2

ciscoios_xeMatch16.12.1

ciscoios_xeMatch16.12.1s

ciscoios_xeMatch16.12.1t

ciscoios_xeMatch16.12.2s

ciscoios_xeMatch16.12.2t

ciscoios_xeMatch16.12.3

ciscoios_xeMatch16.12.3s

ciscoios_xeMatch16.12.4

ciscoios_xeMatch16.12.4a

ciscoios_xeMatch17.1.1

ciscoios_xeMatch17.1.1s

ciscoios_xeMatch17.1.1t

ciscoios_xeMatch17.1.2

ciscoios_xeMatch17.1.3

ciscoios_xeMatch17.2.1

ciscoios_xeMatch17.2.1a

ciscoios_xeMatch17.3.1

AND

ciscocatalyst_9800Match-

ciscocatalyst_9800-40Match-

ciscocatalyst_9800-40_wireless_controllerMatch-

ciscocatalyst_9800-80Match-

ciscocatalyst_9800-80_wireless_controllerMatch-

ciscocatalyst_9800-clMatch-

ciscocatalyst_9800-lMatch-

ciscocatalyst_9800-l-cMatch-

ciscocatalyst_9800-l-fMatch-

ciscocatalyst_9800_embedded_wireless_controllerMatch-

VendorProductVersionCPE
ciscoios_xe*cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
ciscoios_xe3.15.1xbscpe:2.3:o:cisco:ios_xe:3.15.1xbs:*:*:*:*:*:*:*
ciscoios_xe3.15.2xbscpe:2.3:o:cisco:ios_xe:3.15.2xbs:*:*:*:*:*:*:*
ciscoios_xe16.6.4scpe:2.3:o:cisco:ios_xe:16.6.4s:*:*:*:*:*:*:*
ciscoios_xe16.10.1cpe:2.3:o:cisco:ios_xe:16.10.1:*:*:*:*:*:*:*
ciscoios_xe16.10.1ecpe:2.3:o:cisco:ios_xe:16.10.1e:*:*:*:*:*:*:*
ciscoios_xe16.10.1scpe:2.3:o:cisco:ios_xe:16.10.1s:*:*:*:*:*:*:*
ciscoios_xe16.11.1cpe:2.3:o:cisco:ios_xe:16.11.1:*:*:*:*:*:*:*
ciscoios_xe16.11.1acpe:2.3:o:cisco:ios_xe:16.11.1a:*:*:*:*:*:*:*
ciscoios_xe16.11.1bcpe:2.3:o:cisco:ios_xe:16.11.1b:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
cisco	ios_xe	*	cpe:2.3:o:cisco:ios_xe::::::::
cisco	ios_xe	3.15.1xbs	cpe:2.3:o:cisco:ios_xe:3.15.1xbs:::::::*
cisco	ios_xe	3.15.2xbs	cpe:2.3:o:cisco:ios_xe:3.15.2xbs:::::::*
cisco	ios_xe	16.6.4s	cpe:2.3:o:cisco:ios_xe:16.6.4s:::::::*
cisco	ios_xe	16.10.1	cpe:2.3:o:cisco:ios_xe:16.10.1:::::::*
cisco	ios_xe	16.10.1e	cpe:2.3:o:cisco:ios_xe:16.10.1e:::::::*
cisco	ios_xe	16.10.1s	cpe:2.3:o:cisco:ios_xe:16.10.1s:::::::*
cisco	ios_xe	16.11.1	cpe:2.3:o:cisco:ios_xe:16.11.1:::::::*
cisco	ios_xe	16.11.1a	cpe:2.3:o:cisco:ios_xe:16.11.1a:::::::*
cisco	ios_xe	16.11.1b	cpe:2.3:o:cisco:ios_xe:16.11.1b:::::::*

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1-10 of 391

CNA Affected

[
  {
    "product": "Cisco IOS XE Software",
    "vendor": "Cisco",
    "versions": [
      {
        "status": "affected",
        "version": "n/a"
      }
    ]
  }
]

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewlc-capwap-rce-LYgj8Kf

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:S/C:C/I:C/A:C

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.7

Confidence

High

EPSS

0.002

Percentile

55.7%

JSON

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