CVE-2021-34727

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-34727
A vulnerability in the vDaemon process in Cisco IOS XE SD-WAN Software could allow an unauthenticated, remote attacker to cause a buffer overflow on an affected device. This vulnerability is due to insufficient bounds checking when an affected device processes traffic. An attacker could exploit this vulnerability by sending crafted traffic to the device. A successful exploit could allow the attacker to cause a buffer overflow and possibly execute arbitrary commands with root-level privileges, or cause the device to reload, which could result in a denial of service condition.

9.8 /10

CVSS v3 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

10.0 /10

CVSS v2.0 : HIGH

V2 Legend

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

Exploitability : 10.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References
Link Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxesdwan-rbuffover-vE2OB6tp Vendor Advisory
Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:cisco:ios_xe_sd-wan:-:*:*:*:*:*:*:*
OR cpe:2.3:h:cisco:1000_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1100-4g\/6g_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1100-4p_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1100-8p_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1100_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1101-4p_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1101_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1109-2p_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1109-4p_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1109_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1111x-8p_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1111x_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:111x_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1120_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1160_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4000_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:422_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4221_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4321_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4331_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4351_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4431_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4451-x_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4451_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4461_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1000:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1000-esp100:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1000-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1000_series:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1000_series_route_processor_\(rp2\):-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1000_series_route_processor_\(rp3\):-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1001:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1001-hx:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1001-hx_r:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1001-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1001-x_r:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1002:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1002-hx:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1002-hx_r:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1002-x_r:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1004:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1006:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1006-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1009-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1013:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1023:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:csr_1000v:-:*:*:*:*:*:*:*
History

22 May 2023, 18:57

Type Values Removed Values Added
First Time Cisco 4321 Integrated Services Router
Cisco 4221 Integrated Services Router
Cisco 4351 Integrated Services Router
Cisco 1101-4p Integrated Services Router
Cisco 111x Integrated Services Router
Cisco 1100-8p Integrated Services Router
Cisco 4451-x Integrated Services Router
Cisco 1111x-8p Integrated Services Router
Cisco 1109-2p Integrated Services Router
Cisco 1100 Integrated Services Router
Cisco 4451 Integrated Services Router
Cisco 1000 Integrated Services Router
Cisco 1101 Integrated Services Router
Cisco 1100-4g\/6g Integrated Services Router
Cisco 1109-4p Integrated Services Router
Cisco 1120 Integrated Services Router
Cisco 4331 Integrated Services Router
Cisco 4000 Integrated Services Router
Cisco 1100-4p Integrated Services Router
Cisco 1111x Integrated Services Router
Cisco 4461 Integrated Services Router
Cisco 1109 Integrated Services Router
Cisco 422 Integrated Services Router
Cisco 1160 Integrated Services Router
Cisco 4431 Integrated Services Router
CPE cpe:2.3:h:cisco:isr_4461:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_4221:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_4000:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_422:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1111x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_4351:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_4451-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1109:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_4331:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1100-4g\/6g:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1109-2p:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_4431:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1160:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1000:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1100-8p:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_111x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1100:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1101:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1101-4p:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1100-4p:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1109-4p:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1111x-8p:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_4451:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1120:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_4321:-:*:*:*:*:*:*:*		 cpe:2.3:h:cisco:1111x_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4321_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4451-x_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1100_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4451_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1100-4g\/6g_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4351_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:111x_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4000_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4331_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1000_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1160_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1120_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1101_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:422_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1100-8p_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1109_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1111x-8p_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4221_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1100-4p_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1101-4p_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1109-4p_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1109-2p_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4461_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4431_integrated_services_router:-:*:*:*:*:*:*:*

13 Oct 2021, 13:47

Type Values Removed Values Added
CWE CWE-120
CVSS v2 : unknown
v3 : unknown 		v2 : 10.0
v3 : 9.8
CPE cpe:2.3:h:cisco:asr_1006-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1100-4g\/6g:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1000-esp100:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1002-hx:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe_sd-wan:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1000_series_route_processor_\(rp2\):-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_4351:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1120:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_4451:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1002-hx_r:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1000-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1002-x_r:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1013:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1006:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1000:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1109-4p:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_4431:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1111x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_4331:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1100:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1001-hx:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1160:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1000_series_route_processor_\(rp3\):-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1101-4p:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_4461:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1101:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1109-2p:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_111x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1009-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1109:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1001-hx_r:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_4451-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1001-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1001:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1000:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:csr_1000v:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_4000:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1100-8p:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1001-x_r:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1100-4p:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_422:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1111x-8p:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_4221:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_4321:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1000_series:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1023:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1002:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1004:-:*:*:*:*:*:*:*
References (CISCO) https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxesdwan-rbuffover-vE2OB6tp - (CISCO) https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxesdwan-rbuffover-vE2OB6tp - Vendor Advisory

23 Sep 2021, 03:15

Type Values Removed Values Added
New CVE
Information

Published : 2021-09-23 03:15

Updated : 2023-12-10 14:09

NVD link : CVE-2021-34727

Mitre link : CVE-2021-34727

CVE.ORG link : CVE-2021-34727

JSON object : View

Products Affected

cisco

  • 1109-2p_integrated_services_router
  • 1109_integrated_services_router
  • asr_1002-hx
  • 1111x_integrated_services_router
  • 4321_integrated_services_router
  • 1109-4p_integrated_services_router
  • 1000_integrated_services_router
  • asr_1001-hx
  • asr_1009-x
  • asr_1001
  • asr_1001-x_r
  • 4351_integrated_services_router
  • asr_1006
  • 4451-x_integrated_services_router
  • asr_1000-x
  • 4000_integrated_services_router
  • asr_1023
  • 1100-4p_integrated_services_router
  • asr_1002-x
  • asr_1000_series_route_processor_\(rp2\)
  • asr_1002-x_r
  • 1100-4g\/6g_integrated_services_router
  • csr_1000v
  • 4331_integrated_services_router
  • 1111x-8p_integrated_services_router
  • 1101_integrated_services_router
  • asr_1002-hx_r
  • 1160_integrated_services_router
  • 4461_integrated_services_router
  • 4221_integrated_services_router
  • asr_1004
  • 4451_integrated_services_router
  • asr_1001-x
  • 1101-4p_integrated_services_router
  • asr_1000_series
  • asr_1002
  • asr_1006-x
  • asr_1000-esp100
  • 1100_integrated_services_router
  • asr_1013
  • asr_1001-hx_r
  • ios_xe_sd-wan
  • 111x_integrated_services_router
  • asr_1000
  • asr_1000_series_route_processor_\(rp3\)
  • 4431_integrated_services_router
  • 1120_integrated_services_router
  • 422_integrated_services_router
  • 1100-8p_integrated_services_router
CWE
CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')