PT-2021-2175 · Cisco · Cisco Nx-Os+1

Published 2021-02-24 · Updated 2021-03-09 · CVE-2021-1367

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco NX-OS Software (affected versions not specified)

Description The issue is related to insufficient input validation in the Protocol Independent Multicast (PIM) feature of Cisco NX-OS Software. This could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device by sending a crafted PIM packet. A successful exploit could allow the attacker to cause a traffic loop, resulting in a DoS condition.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2021-01082

CVE-2021-1367

Affected Products

Cisco Nx-Os

Cisco Nexus

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2021-1367 · Security Note
• https://osv.dev/vulnerability/CVE-2021-1367 · Vendor Advisory
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-pim-dos-Y8SjMz4 · Vendor Advisory
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-pim-dos-Y8SjMz4 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-01082 · Security Note
• https://cybersecurity-help.cz/vdb/SB2021022522 · Note
• https://t.me/cvenotify/10454 · Telegram Post
• https://t.me/cibsecurity/24110 · Telegram Post