CVE-2019-12480 : BACnet Protocol Stack through 0.8.6 has a segmentation fault leading to denial o

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.

Published 2019-05-30 22:29:00

Updated 2019-07-19 19:15:11

Source MITRE

View at NVD, CVE.org

Vulnerability category: Memory CorruptionDenial of service

Products affected by CVE-2019-12480

Bacnet Protocol Stack Project » Bacnet Protocol Stack
Versions up to, including, (<=) 0.8.6
cpe:2.3:a:bacnet_protocol_stack_project:bacnet_protocol_stack:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2019-12480

EPSS FAQ

20.35%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 95 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-12480

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
7.5	HIGH	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2019-12480

CWE-125 Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2019-12480

https://sourceforge.net/p/bacnet/code/3220

BACnet Protocol Stack / Code / Commit [r3220]
https://sourceforge.net/p/bacnet/bugs/62/

BACnet Protocol Stack / Bugs / #62 Invalid read in bacserv when decoding alarm tags
Exploit;Third Party Advisory
https://sourceforge.net/p/bacnet/code/3223

BACnet Protocol Stack / Code / Commit [r3223]
https://1modm.github.io/CVE-2019-12480.html

BACnet CVE-2019-12480 · M
https://sourceforge.net/p/bacnet/code/3224

BACnet Protocol Stack / Code / Commit [r3224]
http://packetstormsecurity.com/files/153716/BACnet-Stack-0.8.6-Denial-Of-Service.html

BACnet Stack 0.8.6 Denial Of Service ≈ Packet Storm
https://sourceforge.net/p/bacnet/code/3225

BACnet Protocol Stack / Code / Commit [r3225]

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Vulnerability Details : CVE-2019-12480

Products affected by CVE-2019-12480

Exploit prediction scoring system (EPSS) score for CVE-2019-12480

CVSS scores for CVE-2019-12480

CWE ids for CVE-2019-12480

References for CVE-2019-12480