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[email protected]NVD:CVE-2021-34727

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

CVE-2021-34727

2021-09-2303:15:19

CWE-120

[email protected]

web.nvd.nist.gov

cisco

ios xe

sd-wan software

buffer overflow

remote attacker

denial of service

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.02

Percentile

89.0%

JSON

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.

Affected configurations

Nvd

Node

ciscoios_xe_sd-wanMatch-

AND

cisco1000_integrated_services_routerMatch-

cisco1100-4g\/6g_integrated_services_routerMatch-

cisco1100-4p_integrated_services_routerMatch-

cisco1100-8p_integrated_services_routerMatch-

cisco1100_integrated_services_routerMatch-

cisco1101-4p_integrated_services_routerMatch-

cisco1101_integrated_services_routerMatch-

cisco1109-2p_integrated_services_routerMatch-

cisco1109-4p_integrated_services_routerMatch-

cisco1109_integrated_services_routerMatch-

cisco1111x-8p_integrated_services_routerMatch-

cisco1111x_integrated_services_routerMatch-

cisco111x_integrated_services_routerMatch-

cisco1120_integrated_services_routerMatch-

cisco1160_integrated_services_routerMatch-

cisco4000_integrated_services_routerMatch-

cisco422_integrated_services_routerMatch-

cisco4221_integrated_services_routerMatch-

cisco4321_integrated_services_routerMatch-

cisco4331_integrated_services_routerMatch-

cisco4351_integrated_services_routerMatch-

cisco4431_integrated_services_routerMatch-

cisco4451-x_integrated_services_routerMatch-

cisco4451_integrated_services_routerMatch-

cisco4461_integrated_services_routerMatch-

ciscoasr_1000Match-

ciscoasr_1000-esp100Match-

ciscoasr_1000-xMatch-

ciscoasr_1000_seriesMatch-

ciscoasr_1000_series_route_processor_\(rp2\)Match-

ciscoasr_1000_series_route_processor_\(rp3\)Match-

ciscoasr_1001Match-

ciscoasr_1001-hxMatch-

ciscoasr_1001-hx_rMatch-

ciscoasr_1001-xMatch-

ciscoasr_1001-x_rMatch-

ciscoasr_1002Match-

ciscoasr_1002-hxMatch-

ciscoasr_1002-hx_rMatch-

ciscoasr_1002-xMatch-

ciscoasr_1002-x_rMatch-

ciscoasr_1004Match-

ciscoasr_1006Match-

ciscoasr_1006-xMatch-

ciscoasr_1009-xMatch-

ciscoasr_1013Match-

ciscoasr_1023Match-

ciscocsr_1000vMatch-

VendorProductVersionCPE
ciscoios_xe_sd-wan-cpe:2.3:o:cisco:ios_xe_sd-wan:-:*:*:*:*:*:*:*
cisco1000_integrated_services_router-cpe:2.3:h:cisco:1000_integrated_services_router:-:*:*:*:*:*:*:*
cisco1100-4g\/6g_integrated_services_router-cpe:2.3:h:cisco:1100-4g\/6g_integrated_services_router:-:*:*:*:*:*:*:*
cisco1100-4p_integrated_services_router-cpe:2.3:h:cisco:1100-4p_integrated_services_router:-:*:*:*:*:*:*:*
cisco1100-8p_integrated_services_router-cpe:2.3:h:cisco:1100-8p_integrated_services_router:-:*:*:*:*:*:*:*
cisco1100_integrated_services_router-cpe:2.3:h:cisco:1100_integrated_services_router:-:*:*:*:*:*:*:*
cisco1101-4p_integrated_services_router-cpe:2.3:h:cisco:1101-4p_integrated_services_router:-:*:*:*:*:*:*:*
cisco1101_integrated_services_router-cpe:2.3:h:cisco:1101_integrated_services_router:-:*:*:*:*:*:*:*
cisco1109-2p_integrated_services_router-cpe:2.3:h:cisco:1109-2p_integrated_services_router:-:*:*:*:*:*:*:*
cisco1109-4p_integrated_services_router-cpe:2.3:h:cisco:1109-4p_integrated_services_router:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
cisco	ios_xe_sd-wan	-	cpe:2.3:o:cisco:ios_xe_sd-wan:-:::::::*
cisco	1000_integrated_services_router	-	cpe:2.3:h:cisco:1000_integrated_services_router:-:::::::*
cisco	1100-4g\/6g_integrated_services_router	-	cpe:2.3:h:cisco:1100-4g\/6g_integrated_services_router:-:::::::*
cisco	1100-4p_integrated_services_router	-	cpe:2.3:h:cisco:1100-4p_integrated_services_router:-:::::::*
cisco	1100-8p_integrated_services_router	-	cpe:2.3:h:cisco:1100-8p_integrated_services_router:-:::::::*
cisco	1100_integrated_services_router	-	cpe:2.3:h:cisco:1100_integrated_services_router:-:::::::*
cisco	1101-4p_integrated_services_router	-	cpe:2.3:h:cisco:1101-4p_integrated_services_router:-:::::::*
cisco	1101_integrated_services_router	-	cpe:2.3:h:cisco:1101_integrated_services_router:-:::::::*
cisco	1109-2p_integrated_services_router	-	cpe:2.3:h:cisco:1109-2p_integrated_services_router:-:::::::*
cisco	1109-4p_integrated_services_router	-	cpe:2.3:h:cisco:1109-4p_integrated_services_router:-:::::::*

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References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxesdwan-rbuffover-vE2OB6tp

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.02

Percentile

89.0%

JSON

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