VDB-138296 · CVE-2019-1010073 · GCVE-0-2019-1010073

BACnet Stack bacserv 0.8.5/0.9.1 bacserv BVLC forwarded NPDU bvlc_bdt_forward_npdu memory corruption

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.9	$0-$5k	0.00

Summaryinfo

A vulnerability was found in BACnet Stack bacserv 0.8.5/0.9.1 and classified as problematic. This issue affects the function bvlc_bdt_forward_npdu of the component bacserv BVLC forwarded NPDU. Such manipulation leads to memory corruption. This vulnerability is documented as CVE-2019-1010073. The attack needs to be performed locally. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in BACnet Stack bacserv 0.8.5/0.9.1. Affected by this issue is the function bvlc_bdt_forward_npdu of the component bacserv BVLC forwarded NPDU. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

BACnet Stack bacserv 0.9.1 and 0.8.5 is affected by: Buffer Overflow. The impact is: exploit was not explored. The component is: bacserv BVLC forwarded NPDU. bvlc_bdt_forward_npdu() calls bvlc_encode_forwarded_npdu() which copies the content from the request into a local in the bvlc_bdt_forward_npdu() stack frame and clobbers the canary. The attack vector is: A BACnet/IP device with BBMD enabled based on this library connected to IP network. The fixed version is: 0.8.6.

The weakness was released 07/18/2019. This vulnerability is handled as CVE-2019-1010073 since 03/20/2019. The attack needs to be approached locally. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

BACnet Stack bacserv

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.9

VulDB Base Score: 5.9
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/20/2019 🔍
07/18/2019 +120 days 🔍
07/19/2019 +1 days 🔍
11/01/2023 +1566 days 🔍

Sourcesinfo

Status: Not defined

CVE: CVE-2019-1010073 (🔍)
GCVE (CVE): GCVE-0-2019-1010073
GCVE (VulDB): GCVE-100-138296

Entryinfo

Created: 07/19/2019 10:24
Updated: 11/01/2023 14:51
Changes: 07/19/2019 10:24 (34), 07/08/2020 12:25 (3), 11/01/2023 14:51 (8)
Complete: 🔍
Cache ID: 216::103