CVE-2019-12480 Information

Description

BACnet Protocol Stack through 0.8.6 has a segmentation fault leading to denial of service in BACnet APDU Layer because a malformed DCC in AtomicWriteFile AtomicReadFile and DeviceCommunicationControl services. An unauthenticated remote attacker could cause a denial of service (bacserv daemon crash) because there is an invalid read in bacdcode.c during parsing of alarm tag numbers.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://packetstormsecurity.com/files/153716/BACnet-Stack-0.8.6-Denial-Of-Service.html https://1modm.github.io/CVE-2019-12480.html https://sourceforge.net/p/bacnet/bugs/62/ https://sourceforge.net/p/bacnet/code/3220 https://sourceforge.net/p/bacnet/code/3223 https://sourceforge.net/p/bacnet/code/3224 https://sourceforge.net/p/bacnet/code/3225

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5