CVE-2021-1588

CWE-126 — Buffer Over-readCWE-20 — Improper Input ValidationCWE-125 — Out-of-bounds Read4 documents4 sources
Severity
8.6HIGH
EPSS
1.4%
top 19.73%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Cisco Cisco Nx-os SoftwareCisco Nx-os
Timeline
PublishedAug 25
Latest updateMay 24

Description

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 f…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:HExploitability: 3.9 | Impact: 4.0

Affected Packages2 packages

▶NVDcisco/nx-os7.0\(3\)i7\(9\), 8.4\(1\), 9.3\(7\)+2

Patches

Patch: tools.cisco.com ↗Patch: tools.cisco.com ↗

🔴Vulnerability Details

2
GHSA
GHSA-427g-prh3-hw73: A vulnerability in the MPLS Operation, Administration, and Maintenance (OAM) feature of Cisco NX-OS Software could allow an unauthenticated, remote at↗2022-05-24
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CVEList
Cisco NX-OS Software MPLS OAM Denial of Service Vulnerability↗2021-08-25
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📋Vendor Advisories

1
Cisco
Cisco NX-OS Software MPLS OAM Denial of Service Vulnerability↗2021-08-25
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CVE-2021-1588 (HIGH CVSS 8.6) | A vulnerability in the MPLS Operati | cvebase.io