PT-2023-31891 · Unknown · Bacnet Stack

Skarg · Published 2023-12-25 · Updated 2024-08-01 · CVE-2023-51773

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions BACnet Stack versions prior to 1.3.2

Description The issue is related to a decode function APDU buffer over-read in the bacapp decode application data function in bacapp.c. This over-read occurs in versions of the BACnet Stack before 1.3.2.

Recommendations For versions prior to 1.3.2, update to version 1.3.2 or later to resolve the issue. As a temporary workaround, consider restricting access to the bacapp decode application data function until a patch is available.

Fix

Buffer Over-read

Weakness Enumeration

CWE-126

Related Identifiers

CVE-2023-51773

Affected Products

Bacnet Stack

References · 8

• https://github.com/bacnet-stack/bacnet-stack/pull/546 · Patch
• https://github.com/bacnet-stack/bacnet-stack/compare/bacnet-stack-1.3.1...bacnet-stack-1.3.2 · Patch
• https://github.com/bacnet-stack/bacnet-stack/pull/546/commits/c465412a076ca6c9ddf649612f2b4e1874d8dcb8 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2023-51773 · Security Note
• https://osv.dev/vulnerability/CVE-2023-51773 · Vendor Advisory
• https://github.com/bacnet-stack/bacnet-stack/blob/master/CHANGELOG.md · Note
• https://twitter.com/CVEnew/status/1739388677950775502 · Twitter Post
• https://sourceforge.net/p/bacnet/bugs/85 · Note