PT-2021-14386 · Unknown · Contiki-Ng

Joakimeriksson · Published 2021-06-18 · Updated 2021-06-22 · CVE-2021-21280

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions: Contiki-NG versions prior to 4.6

Description: The issue affects Contiki-NG, an open-source operating system for internet of things devices. It is possible to cause an out-of-bounds write when transmitting a 6LoWPAN packet with a chain of extension headers. The written header is not checked to be within the available space, making it possible to write outside the buffer.

Recommendations: For versions prior to 4.6, apply the patch for this issue out-of-band as a workaround. For versions prior to 4.6, update to Contiki-NG 4.6 to resolve the issue.

Exploit

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2021-21280

GHSA-R768-HRHF-V592

Affected Products

Contiki-Ng

References · 5

• 🔥 https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-r768-hrhf-v592 · Exploit
• https://github.com/contiki-ng/contiki-ng/pull/1409 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-21280 · Security Note
• https://osv.dev/vulnerability/CVE-2021-21280 · Vendor Advisory
• https://t.me/cvenotify/16559 · Telegram Post