PT-2021-22100 · Contiki · Contiki

Jerrytesting · Published 2021-08-10 · Updated 2021-08-17 · CVE-2021-38386

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Contiki version 3.0

Description The issue is related to a buffer overflow in the Telnet service, which can be exploited by remote attackers to cause a denial of service. This occurs because the ls command is mishandled when a directory contains many files with long names.

Recommendations For Contiki version 3.0, consider disabling the Telnet service until a patch is available to prevent potential denial of service attacks. Restrict access to directories with many files to minimize the risk of exploitation. Avoid using the ls command in the Telnet service for directories with long file names until the issue is resolved.

Fix

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

CVE-2021-38386

Affected Products

Contiki

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2021-38386 · Security Note
• https://osv.dev/vulnerability/CVE-2021-38386 · Vendor Advisory
• https://github.com/contiki-os/contiki/issues/2687 · Note
• https://t.me/cvenotify/19035 · Telegram Post