CVE-2021-1588

EPSS 1.03%
Published 25.08.2021 20:15:11
Last modified 21.11.2024 05:44:41
Source psirt@cisco.com
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A vulnerability in the MPLS Operation, Administration, and Maintenance (OAM) feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper input validation when an affected device is processing an MPLS echo-request or echo-reply packet. An attacker could exploit this vulnerability by sending malicious MPLS echo-request or echo-reply packets to an interface that is enabled for MPLS forwarding on the affected device. A successful exploit could allow the attacker to cause the MPLS OAM process to crash and restart multiple times, causing the affected device to reload and resulting in a DoS condition.

Affected products Warnungen 0 Metrics 4 CWE 3 References 4

Data is provided by the National Vulnerability Database (NVD)

Cisco ≫ Nx-os Version7.0(3)i7(9)

   Cisco ≫ Nexus 3000 Version-
   Cisco ≫ Nexus 3048 Version-
   Cisco ≫ Nexus 31108pc-v Version-
   Cisco ≫ Nexus 31108tc-v Version-
   Cisco ≫ Nexus 31128pq Version-
   Cisco ≫ Nexus 3132c-z Version-
   Cisco ≫ Nexus 3132q-v Version-
   Cisco ≫ Nexus 3132q-x/3132q-xl Version-
   Cisco ≫ Nexus 3164q Version-
   Cisco ≫ Nexus 3172pq/pq-xl Version-
   Cisco ≫ Nexus 3172tq-xl Version-
   Cisco ≫ Nexus 3232c Version-
   Cisco ≫ Nexus 3264c-e Version-
   Cisco ≫ Nexus 3264q Version-
   Cisco ≫ Nexus 3408-s Version-
   Cisco ≫ Nexus 34180yc Version-
   Cisco ≫ Nexus 3432d-s Version-
   Cisco ≫ Nexus 3464c Version-
   Cisco ≫ Nexus 3524-x/xl Version-
   Cisco ≫ Nexus 3548-x/xl Version-
   Cisco ≫ Nexus 36180yc-r Version-
   Cisco ≫ Nexus 3636c-r Version-
   Cisco ≫ Nexus 7000 10-slot Version-
   Cisco ≫ Nexus 7000 18-slot Version-
   Cisco ≫ Nexus 7000 4-slot Version-
   Cisco ≫ Nexus 7000 9-slot Version-
   Cisco ≫ Nexus 9000v Version-
   Cisco ≫ Nexus 92160yc-x Version-
   Cisco ≫ Nexus 92300yc Version-
   Cisco ≫ Nexus 92304qc Version-
   Cisco ≫ Nexus 92348gc-x Version-
   Cisco ≫ Nexus 9236c Version-
   Cisco ≫ Nexus 9272q Version-
   Cisco ≫ Nexus 93108tc-ex Version-
   Cisco ≫ Nexus 93108tc-ex-24 Version-
   Cisco ≫ Nexus 93108tc-fx Version-
   Cisco ≫ Nexus 93108tc-fx-24 Version-
   Cisco ≫ Nexus 93108tc-fx3p Version-
   Cisco ≫ Nexus 93120tx Version-
   Cisco ≫ Nexus 93128tx Version-
   Cisco ≫ Nexus 9316d-gx Version-
   Cisco ≫ Nexus 93180lc-ex Version-
   Cisco ≫ Nexus 93180yc-ex Version-
   Cisco ≫ Nexus 93180yc-ex-24 Version-
   Cisco ≫ Nexus 93180yc-fx Version-
   Cisco ≫ Nexus 93180yc-fx-24 Version-
   Cisco ≫ Nexus 93180yc-fx3 Version-
   Cisco ≫ Nexus 93180yc-fx3s Version-
   Cisco ≫ Nexus 93216tc-fx2 Version-
   Cisco ≫ Nexus 93240yc-fx2 Version-
   Cisco ≫ Nexus 9332c Version-
   Cisco ≫ Nexus 9332pq Version-
   Cisco ≫ Nexus 93360yc-fx2 Version-
   Cisco ≫ Nexus 9336c-fx2 Version-
   Cisco ≫ Nexus 9336c-fx2-e Version-
   Cisco ≫ Nexus 9348gc-fxp Version-
   Cisco ≫ Nexus 93600cd-gx Version-
   Cisco ≫ Nexus 9364c Version-
   Cisco ≫ Nexus 9364c-gx Version-
   Cisco ≫ Nexus 9372px Version-
   Cisco ≫ Nexus 9372px-e Version-
   Cisco ≫ Nexus 9372tx Version-
   Cisco ≫ Nexus 9372tx-e Version-
   Cisco ≫ Nexus 9396px Version-
   Cisco ≫ Nexus 9396tx Version-
   Cisco ≫ Nexus 9508 Version-

Cisco ≫ Nx-os Version8.4(1)

Cisco ≫ Nx-os Version9.3(7)

Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.

EPSS Metriken
Type	Source	Score	Percentile
EPSS	FIRST.org	1.03%	0.765

CVSS Metriken
Source	Base Score	Exploit Score	Impact Score	Vector string
nvd@nist.gov	8.6	3.9	4	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
nvd@nist.gov	5	10	2.9	AV:N/AC:L/Au:N/C:N/I:N/A:P
psirt@cisco.com	8.6	3.9	4	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CWE-125 Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

CWE-126 Buffer Over-read

The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.

CWE-20 Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-mpls-oam-dos-sGO9x5GM

Patch

Vendor Advisory

https://nvd.nist.gov/vuln/detail/CVE-2021-1588

CVE Source (NVD)

https://cveawg.mitre.org/api/cve/CVE-2021-1588

CVE Source (JSON)

https://euvd.enisa.europa.eu/vulnerability/CVE-2021-1588

EUVD