PT-2021-1840 · Cisco · Cisco Staros

Published 2021-01-20 · Updated 2021-02-03 · CVE-2021-1353

Positive Technologies (AI Summary)

CVSS v3.1

8.6

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco StarOS (affected versions not specified)

Description The issue is related to a memory leak that occurs during packet processing in the IPv4 protocol handling of Cisco StarOS. This could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device by sending a series of crafted IPv4 packets. A successful exploit could exhaust the available memory and cause an unexpected restart of the npusim process, leading to a DoS condition.

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

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

BDU:2021-00600

CVE-2021-1353

Affected Products

Cisco Staros

References · 6

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asr-mem-leak-dos-MTWGHKk3 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-1353 · Security Note
• https://bdu.fstec.ru/vul/2021-00600 · Security Note
• https://osv.dev/vulnerability/CVE-2021-1353 · Vendor Advisory
• https://t.me/cvenotify/9361 · Telegram Post
• https://t.me/cibsecurity/22456 · Telegram Post