PT-2023-12621 · Unknown · Cetic-6Lbr

Published 2023-12-31 · Updated 2024-01-08 · CVE-2021-46901

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 CETIC-6LBR (aka 6lbr) version 1.5.0

Description The issue is a strcat stack-based buffer overflow that occurs when a request for a long URL is made over a 6LoWPAN network. This can be exploited via the httpd.c file in the examples/6lbr/apps/6lbr-webserver directory.

Recommendations For CETIC-6LBR (aka 6lbr) version 1.5.0, consider disabling the httpd.c file or restricting access to it until a patch is available to prevent exploitation of the buffer overflow vulnerability.

Exploit

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2021-46901

Affected Products

Cetic-6Lbr

References · 8

• 🔥 https://github.com/cetic/6lbr/issues/414 · Exploit
• https://github.com/cetic/6lbr/blob/c3092a1ccc6b6b0e668f33f6f4b2d6967975d664/examples/6lbr/apps/6lbr-webserver/httpd.c#L119 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-46901 · Security Note
• https://osv.dev/vulnerability/CVE-2021-46901 · Vendor Advisory
• https://twitter.com/CVEnew/status/1741359627051352366 · Twitter Post
• https://t.me/cibsecurity/74055 · Telegram Post
• https://t.me/cvenotify/65833 · Telegram Post
• https://t.me/cvenotify/66661 · Telegram Post