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[email protected]NVD:CVE-2021-34714

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

CVE-2021-34714

2021-09-2303:15:18

CWE-20

[email protected]

web.nvd.nist.gov

cisco

vulnerability

networking software

unauthenticated attacker

device reload

input validation

denial of service

CVSS2

5.7

Attack Vector

ADJACENT_NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

CVSS3

7.4

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.001

Percentile

25.0%

JSON

A vulnerability in the Unidirectional Link Detection (UDLD) feature of Cisco FXOS Software, Cisco IOS Software, Cisco IOS XE Software, Cisco IOS XR Software, and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause an affected device to reload. This vulnerability is due to improper input validation of the UDLD packets. An attacker could exploit this vulnerability by sending specifically crafted UDLD packets to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. Note: The UDLD feature is disabled by default, and the conditions to exploit this vulnerability are strict. An attacker must have full control of a directly connected device. On Cisco IOS XR devices, the impact is limited to the reload of the UDLD process.

Affected configurations

Nvd

Node

ciscofirepower_4100Match-

ciscofirepower_4110Match-

ciscofirepower_4112Match-

ciscofirepower_4115Match-

ciscofirepower_4120Match-

ciscofirepower_4125Match-

ciscofirepower_4140Match-

ciscofirepower_4145Match-

ciscofirepower_4150Match-

ciscofirepower_9300Match-

ciscofirepower_9300_sm-24Match-

ciscofirepower_9300_sm-36Match-

ciscofirepower_9300_sm-40Match-

ciscofirepower_9300_sm-44Match-

ciscofirepower_9300_sm-44_x_3Match-

ciscofirepower_9300_sm-48Match-

ciscofirepower_9300_sm-56Match-

ciscofirepower_9300_sm-56_x_3Match-

ciscofirepower_9300_with_1_sm-24_moduleMatch-

ciscofirepower_9300_with_1_sm-36_moduleMatch-

ciscofirepower_9300_with_1_sm-44_moduleMatch-

ciscofirepower_9300_with_3_sm-44_moduleMatch-

AND

ciscofxosRange2.2–2.2.2.148

ciscofxosRange2.3–2.3.1.216

ciscofxosRange2.4–2.4.1.273

ciscofxosRange2.6–2.6.1.224

ciscofxosRange2.7–2.7.1.143

ciscofxosRange2.8–2.8.1.143

ciscofxosRange2.9–2.9.1.135

Node

ciscomds_9000Match-

ciscomds_9100Match-

ciscomds_9132tMatch-

ciscomds_9134Match-

ciscomds_9140Match-

ciscomds_9148Match-

ciscomds_9148sMatch-

ciscomds_9148tMatch-

ciscomds_9200Match-

ciscomds_9216Match-

ciscomds_9216aMatch-

ciscomds_9216iMatch-

ciscomds_9222iMatch-

ciscomds_9250iMatch-

ciscomds_9396sMatch-

ciscomds_9396tMatch-

ciscomds_9500Match-

ciscomds_9506Match-

ciscomds_9509Match-

ciscomds_9513Match-

ciscomds_9700Match-

ciscomds_9706Match-

ciscomds_9710Match-

ciscomds_9718Match-

cisconexus_7000Match-

cisconexus_7000_10-slotMatch-

cisconexus_7000_18-slotMatch-

cisconexus_7000_4-slotMatch-

cisconexus_7000_9-slotMatch-

cisconexus_7000_supervisor_1Match-

cisconexus_7000_supervisor_2Match-

cisconexus_7000_supervisor_2eMatch-

cisconexus_7004Match-

cisconexus_7009Match-

cisconexus_7010Match-

cisconexus_7018Match-

cisconexus_7700Match-

cisconexus_7700_10-slotMatch-

cisconexus_7700_18-slotMatch-

cisconexus_7700_2-slotMatch-

cisconexus_7700_6-slotMatch-

cisconexus_7700_supervisor_2eMatch-

cisconexus_7700_supervisor_3eMatch-

cisconexus_7702Match-

cisconexus_7706Match-

cisconexus_7710Match-

cisconexus_7718Match-

AND

ciscofirepower_extensible_operating_systemRange≤8.4\(3.115\)

ciscoiosRange≤8.4\(3.115\)

ciscoios_xeRange≤8.4\(3.115\)

ciscoios_xrRange≤8.4\(3.115\)

cisconx-osRange≤8.4\(3.115\)

Node

cisconexus_3000Match-

cisconexus_3016Match-

cisconexus_3016qMatch-

cisconexus_3048Match-

cisconexus_3064Match-

cisconexus_3064-32tMatch-

cisconexus_3064-tMatch-

cisconexus_3064-xMatch-

cisconexus_3064tMatch-

cisconexus_3064xMatch-

cisconexus_3100Match-

cisconexus_3100-vMatch-

cisconexus_3100-zMatch-

cisconexus_3100vMatch-

cisconexus_31108pc-vMatch-

cisconexus_31108pv-vMatch-

cisconexus_31108tc-vMatch-

cisconexus_31128pqMatch-

cisconexus_3132c-zMatch-

cisconexus_3132qMatch-

cisconexus_3132q-vMatch-

cisconexus_3132q-xMatch-

cisconexus_3132q-x\/3132q-xlMatch-

cisconexus_3132q-xlMatch-

cisconexus_3164qMatch-

cisconexus_3172Match-

cisconexus_3172pqMatch-

cisconexus_3172pq-xlMatch-

cisconexus_3172pq\/pq-xlMatch-

cisconexus_3172tqMatch-

cisconexus_3172tq-32tMatch-

cisconexus_3172tq-xlMatch-

cisconexus_3200Match-

cisconexus_3232cMatch-

cisconexus_3232c_Match-

cisconexus_3264c-eMatch-

cisconexus_3264qMatch-

cisconexus_3400Match-

cisconexus_3408-sMatch-

cisconexus_34180ycMatch-

cisconexus_34200yc-smMatch-

cisconexus_3432d-sMatch-

cisconexus_3464cMatch-

cisconexus_3500Match-

cisconexus_3500_platformMatch-

cisconexus_3524Match-

cisconexus_3524-xMatch-

cisconexus_3524-x\/xlMatch-

cisconexus_3524-xlMatch-

cisconexus_3548Match-

cisconexus_3548-xMatch-

cisconexus_3548-x\/xlMatch-

cisconexus_3548-xlMatch-

cisconexus_3600Match-

cisconexus_36180yc-rMatch-

cisconexus_3636c-rMatch-

cisconexus_9000Match-

cisconexus_9000_in_aci_modeMatch-

cisconexus_9000_in_standaloneMatch-

cisconexus_9000_in_standalone_nx-os_modeMatch-

cisconexus_9000vMatch-

cisconexus_9200Match-

cisconexus_92160yc-xMatch-

cisconexus_9221cMatch-

cisconexus_92300ycMatch-

cisconexus_92304qcMatch-

cisconexus_92348gc-xMatch-

cisconexus_9236cMatch-

cisconexus_9272qMatch-

cisconexus_9300Match-

cisconexus_93108tc-exMatch-

cisconexus_93108tc-ex-24Match-

cisconexus_93108tc-fxMatch-

cisconexus_93108tc-fx-24Match-

cisconexus_93108tc-fx3pMatch-

cisconexus_93120txMatch-

cisconexus_93128Match-

cisconexus_93128txMatch-

cisconexus_9316d-gxMatch-

cisconexus_93180lc-exMatch-

cisconexus_93180tc-exMatch-

cisconexus_93180yc-exMatch-

cisconexus_93180yc-ex-24Match-

cisconexus_93180yc-fxMatch-

cisconexus_93180yc-fx-24Match-

cisconexus_93180yc-fx3Match-

cisconexus_93180yc-fx3sMatch-

cisconexus_93216tc-fx2Match-

cisconexus_93240yc-fx2Match-

cisconexus_9332cMatch-

cisconexus_9332pqMatch-

cisconexus_93360yc-fx2Match-

cisconexus_9336c-fx2Match-

cisconexus_9336c-fx2-eMatch-

cisconexus_9336pqMatch-

cisconexus_9336pq_aci_spineMatch-

cisconexus_9348gc-fxpMatch-

cisconexus_93600cd-gxMatch-

cisconexus_9364cMatch-

cisconexus_9364c-gxMatch-

cisconexus_9372pxMatch-

cisconexus_9372px-eMatch-

cisconexus_9372txMatch-

cisconexus_9372tx-eMatch-

cisconexus_9396pxMatch-

cisconexus_9396txMatch-

cisconexus_9500Match-

cisconexus_9500_supervisor_aMatch-

cisconexus_9500_supervisor_a\+Match-

cisconexus_9500_supervisor_bMatch-

cisconexus_9500_supervisor_b\+Match-

cisconexus_9500rMatch-

cisconexus_9504Match-

cisconexus_9508Match-

cisconexus_9516Match-

AND

ciscofirepower_extensible_operating_systemRange≤7.0\(3\)i7\(9\)

ciscoiosRange≤7.0\(3\)i7\(9\)

ciscoios_xeRange≤7.0\(3\)i7\(9\)

ciscoios_xrRange≤7.0\(3\)i7\(9\)

cisconx-osRange≤7.0\(3\)i7\(9\)

Node

cisconexus_5000Match-

cisconexus_5010Match-

cisconexus_5020Match-

cisconexus_5500Match-

cisconexus_5548pMatch-

cisconexus_5548upMatch-

cisconexus_5596tMatch-

cisconexus_5596upMatch-

cisconexus_5600Match-

cisconexus_56128pMatch-

cisconexus_5624qMatch-

cisconexus_5648qMatch-

cisconexus_5672upMatch-

cisconexus_5672up-16gMatch-

cisconexus_5696qMatch-

cisconexus_6000Match-

cisconexus_6001Match-

cisconexus_6001pMatch-

cisconexus_6001tMatch-

cisconexus_6004Match-

cisconexus_6004xMatch-

AND

ciscofirepower_extensible_operating_systemRange≤7.3\(8\)n1\(1\)

ciscoiosRange≤7.3\(8\)n1\(1\)

ciscoios_xeRange≤7.3\(8\)n1\(1\)

ciscoios_xrRange≤7.3\(8\)n1\(1\)

cisconx-osRange≤7.3\(8\)n1\(1\)

Node

ciscoucs_6200Match-

ciscoucs_6248_up_fabric_interconnectMatch-

ciscoucs_6248upMatch-

ciscoucs_6296_up_fabric_interconnectMatch-

ciscoucs_6296upMatch-

ciscoucs_6300Match-

ciscoucs_6324Match-

ciscoucs_6324_fabric_interconnectMatch-

ciscoucs_6332Match-

ciscoucs_6332-16upMatch-

ciscoucs_6332-16up_fabric_interconnectMatch-

ciscoucs_6332_fabric_interconnectMatch-

AND

ciscofirepower_extensible_operating_systemRange≤3.2\(3o\)a

ciscoiosRange≤3.2\(3o\)a

ciscoios_xeRange≤3.2\(3o\)a

ciscoios_xrRange≤3.2\(3o\)a

cisconx-osRange≤3.2\(3o\)a

Node

ciscoucs_6400Match-

ciscoucs_6454Match-

AND

ciscofirepower_extensible_operating_systemRange≤4.1\(1a\)a

ciscoiosRange≤4.1\(1a\)a

ciscoios_xeRange≤4.1\(1a\)a

ciscoios_xrRange≤4.1\(1a\)a

cisconx-osRange≤3.2\(3o\)a

VendorProductVersionCPE
ciscofirepower_4100-cpe:2.3:h:cisco:firepower_4100:-:*:*:*:*:*:*:*
ciscofirepower_4110-cpe:2.3:h:cisco:firepower_4110:-:*:*:*:*:*:*:*
ciscofirepower_4112-cpe:2.3:h:cisco:firepower_4112:-:*:*:*:*:*:*:*
ciscofirepower_4115-cpe:2.3:h:cisco:firepower_4115:-:*:*:*:*:*:*:*
ciscofirepower_4120-cpe:2.3:h:cisco:firepower_4120:-:*:*:*:*:*:*:*
ciscofirepower_4125-cpe:2.3:h:cisco:firepower_4125:-:*:*:*:*:*:*:*
ciscofirepower_4140-cpe:2.3:h:cisco:firepower_4140:-:*:*:*:*:*:*:*
ciscofirepower_4145-cpe:2.3:h:cisco:firepower_4145:-:*:*:*:*:*:*:*
ciscofirepower_4150-cpe:2.3:h:cisco:firepower_4150:-:*:*:*:*:*:*:*
ciscofirepower_9300-cpe:2.3:h:cisco:firepower_9300:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
cisco	firepower_4100	-	cpe:2.3:h:cisco:firepower_4100:-:::::::*
cisco	firepower_4110	-	cpe:2.3:h:cisco:firepower_4110:-:::::::*
cisco	firepower_4112	-	cpe:2.3:h:cisco:firepower_4112:-:::::::*
cisco	firepower_4115	-	cpe:2.3:h:cisco:firepower_4115:-:::::::*
cisco	firepower_4120	-	cpe:2.3:h:cisco:firepower_4120:-:::::::*
cisco	firepower_4125	-	cpe:2.3:h:cisco:firepower_4125:-:::::::*
cisco	firepower_4140	-	cpe:2.3:h:cisco:firepower_4140:-:::::::*
cisco	firepower_4145	-	cpe:2.3:h:cisco:firepower_4145:-:::::::*
cisco	firepower_4150	-	cpe:2.3:h:cisco:firepower_4150:-:::::::*
cisco	firepower_9300	-	cpe:2.3:h:cisco:firepower_9300:-:::::::*

Rows per page:

1-10 of 2251

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-nxos-xr-udld-dos-W5hGHgtQ

CVSS2

5.7

Attack Vector

ADJACENT_NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

CVSS3

7.4

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.001

Percentile

25.0%

JSON

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