Fermax Outdoor Panel DTMF Receiver authorization

CVSS Meta Temp Score
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CTI Interest Score
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4.4$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Fermax Outdoor Panel. This impacts an unknown function of the component DTMF Receiver. The manipulation leads to authorization. This vulnerability is referenced as CVE-2017-16778. It is possible to launch the attack on the physical device. No exploit is available.

Detailsinfo

A vulnerability was found in Fermax Outdoor Panel (affected version not known) and classified as critical. This issue affects some unknown functionality of the component DTMF Receiver. The manipulation with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-863. The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An access control weakness in the DTMF tone receiver of Fermax Outdoor Panel allows physical attackers to inject a Dual-Tone-Multi-Frequency (DTMF) tone to invoke an access grant that would allow physical access to a restricted floor/level. By design, only a residential unit owner may allow such an access grant. However, due to incorrect access control, an attacker could inject it via the speaker unit to perform an access grant to gain unauthorized access, as demonstrated by a loud DTMF tone representing '1' and a long '#' (697 Hz and 1209 Hz, followed by 941 Hz and 1477 Hz).

The weakness was published 12/24/2019. The identification of this vulnerability is CVE-2017-16778 since 11/10/2017. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

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

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.4

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.6
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Authorization
CWE: CWE-863 / CWE-285 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

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

11/10/2017 🔍
12/24/2019 +774 days 🔍
12/25/2019 +1 days 🔍
12/25/2019 +0 days 🔍

Sourcesinfo

Status: Not defined

CVE: CVE-2017-16778 (🔍)
GCVE (CVE): GCVE-0-2017-16778
GCVE (VulDB): GCVE-100-147695

Entryinfo

Created: 12/25/2019 09:57
Updated: 12/25/2019 10:02
Changes: 12/25/2019 09:57 (34), 12/25/2019 10:02 (17)
Complete: 🔍
Cache ID: 216::103

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