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

No history.

Information

Published : 2021-09-23 03:15

Updated : 2024-02-28 18:48

NVD link : CVE-2021-34727

Mitre link : CVE-2021-34727

CVE.ORG link : CVE-2021-34727

JSON object : View

Products Affected

cisco

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

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


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