CVE-2021-34727

CRITICAL

9.8

Description

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published9/23/2021

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

cisco:1000_integrated_services_routercisco:1100-4g\/6g_integrated_services_routercisco:1100-4p_integrated_services_routercisco:1100-8p_integrated_services_routercisco:1100_integrated_services_routercisco:1101-4p_integrated_services_routercisco:1101_integrated_services_routercisco:1109-2p_integrated_services_routercisco:1109-4p_integrated_services_routercisco:1109_integrated_services_routercisco:1111x-8p_integrated_services_routercisco:1111x_integrated_services_routercisco:111x_integrated_services_routercisco:1120_integrated_services_routercisco:1160_integrated_services_routercisco:4000_integrated_services_routercisco:4221_integrated_services_routercisco:422_integrated_services_routercisco:4321_integrated_services_routercisco:4331_integrated_services_routercisco:4351_integrated_services_routercisco:4431_integrated_services_routercisco:4451-x_integrated_services_routercisco:4451_integrated_services_routercisco:4461_integrated_services_routercisco:asr_1000cisco:asr_1000-esp100cisco:asr_1000-xcisco:asr_1000_seriescisco:asr_1000_series_route_processor_\(rp2\)cisco:asr_1000_series_route_processor_\(rp3\)cisco:asr_1001cisco:asr_1001-hxcisco:asr_1001-hx_rcisco:asr_1001-xcisco:asr_1001-x_rcisco:asr_1002cisco:asr_1002-hxcisco:asr_1002-hx_rcisco:asr_1002-xcisco:asr_1002-x_rcisco:asr_1004cisco:asr_1006cisco:asr_1006-xcisco:asr_1009-xcisco:asr_1013cisco:asr_1023cisco:csr_1000vcisco:ios_xe_sd-wan

Weaknesses (CWE)

CWE-120CWE-120

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxesdwan-rbuffover-vE2OB6tp(psirt@cisco.com)

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxesdwan-rbuffover-vE2OB6tp(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.