Xiaongmai HI3518_50H10L_S39 up to V4.02.R12.Nat.OnvifS.20170727 macGuarder/dvrHelper backdoor

CVSS Meta Temp Score
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CTI Interest Score
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8.5$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Xiaongmai AHB7008T-MH-V2, AHB7804R-ELS, AHB7804R-MH-V2, AHB7808R-MS-V2, AHB7808R-MS, AHB7808T-MS-V2, AHB7804R-LMS and HI3518_50H10L_S39. This vulnerability affects unknown code of the component macGuarder/dvrHelper. Executing a manipulation can lead to backdoor. This vulnerability appears as CVE-2021-41506. In addition, an exploit is available.

Detailsinfo

A vulnerability has been found in Xiaongmai AHB7008T-MH-V2, AHB7804R-ELS, AHB7804R-MH-V2, AHB7808R-MS-V2, AHB7808R-MS, AHB7808T-MS-V2, AHB7804R-LMS and HI3518_50H10L_S39 and classified as critical. This vulnerability affects an unknown functionality of the component macGuarder/dvrHelper. The manipulation with an unknown input leads to a backdoor vulnerability. The CWE definition for the vulnerability is CWE-912. The product contains functionality that is not documented, not part of the specification, and not accessible through an interface or command sequence that is obvious to the product's users or administrators. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Xiaongmai AHB7008T-MH-V2, AHB7804R-ELS, AHB7804R-MH-V2, AHB7808R-MS-V2, AHB7808R-MS, AHB7808T-MS-V2, AHB7804R-LMS, HI3518_50H10L_S39 V4.02.R11.7601.Nat.Onvif.20170420, V4.02.R11.Nat.Onvif.20160422, V4.02.R11.7601.Nat.Onvif.20170424, V4.02.R11.Nat.Onvif.20170327, V4.02.R11.Nat.Onvif.20161205, V4.02.R11.Nat.20170301, V4.02.R12.Nat.OnvifS.20170727 is affected by a backdoor in the macGuarder and dvrHelper binaries of DVR/NVR/IP camera firmware due to static root account credentials in the system.

The weakness was presented 07/01/2022. The advisory is shared for download at github.com. This vulnerability was named CVE-2021-41506 since 09/20/2021. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1588.001.

It is possible to download the exploit at github.com. It is declared as proof-of-concept.

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

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Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.9
VulDB Meta Temp Score: 8.5

VulDB Base Score: 8.0
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Backdoor
CWE: CWE-912
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/20/2021 🔍
07/01/2022 +284 days 🔍
07/01/2022 +0 days 🔍
07/17/2022 +16 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2021-41506 (🔍)
GCVE (CVE): GCVE-0-2021-41506
GCVE (VulDB): GCVE-100-203008
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 07/01/2022 11:30
Updated: 07/17/2022 09:12
Changes: 07/01/2022 11:30 (41), 07/17/2022 09:12 (18)
Complete: 🔍
Cache ID: 216::103

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