Mazda Vehicle up to 2020 Remote Keyless Entry RollBack improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.4$5k-$25k0.06

A vulnerability was found in Mazda Vehicle up to 2020 and classified as very critical. Affected by this issue is an unknown code block of the component Remote Keyless Entry. The manipulation with an unknown input leads to a weak authentication vulnerability (RollBack). Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the software does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The Remote Keyless Entry (RKE) receiving unit on certain Mazda vehicles through 2020 allows remote attackers to perform unlock operations and force a resynchronization after capturing three consecutive valid key-fob signals over the radio, aka a RollBack attack. The attacker retains the ability to unlock indefinitely.

The weakness was released 08/24/2022. The advisory is available at hackaday.com. This vulnerability is handled as CVE-2022-36945 since 07/27/2022. Technical details are unknown but an exploit is available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 09/25/2022). This vulnerability has a historic impact due to its background and reception.

It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k.

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

medium.com is providing further details.

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CPE 2.3info

CPE 2.2info

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CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.4

VulDB Base Score: 6.4
VulDB Temp Score: 6.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 6.4
NVD Vector: 🔒

CVSSv2info

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

Exploitinginfo

Name: RollBack
Class: Weak authentication / RollBack
CWE: CWE-287
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔒
Status: Proof-of-Concept

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

07/27/2022 CVE reserved
08/24/2022 +28 days Advisory disclosed
08/24/2022 +0 days VulDB entry created
09/25/2022 +32 days VulDB last update

Sourcesinfo

Advisory: hackaday.com
Status: Not defined

CVE: CVE-2022-36945 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔒

Entryinfo

Created: 08/24/2022 01:00 PM
Updated: 09/25/2022 11:01 AM
Changes: (9) vulnerability_cvss3_nvd_basescore vulnerability_cvss3_nvd_av vulnerability_cvss3_nvd_ac vulnerability_cvss3_nvd_pr vulnerability_cvss3_nvd_ui vulnerability_cvss3_nvd_s vulnerability_cvss3_nvd_c vulnerability_cvss3_nvd_i vulnerability_cvss3_nvd_a
Complete: 🔍

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