Pektron Passive Keyless Entry/Start 5.4 DST40 cryptographic issue

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Pektron Passive Keyless Entry and Start 5.4 and classified as critical. This issue affects some unknown processing of the component DST40. Executing a manipulation can lead to cryptographic issue. This vulnerability is registered as CVE-2018-16806. The attack needs to be launched locally. No exploit is available. This vulnerability is historically impactful due to its background and the reception it garnered.

Detailsinfo

A vulnerability was found in Pektron Passive Keyless Entry and Start 5.4. It has been declared as critical. This vulnerability affects an unknown code of the component DST40. The manipulation with an unknown input leads to a cryptographic issue vulnerability. The CWE definition for the vulnerability is CWE-310. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A Pektron Passive Keyless Entry and Start (PKES) system, as used on the Tesla Model S and possibly other vehicles, relies on the DST40 cipher, which makes it easier for attackers to obtain access via an approach involving a 5.4 TB precomputation, followed by wake-frame reception and two challenge/response operations, to clone a key fob within a few seconds.

The bug was discovered 09/11/2018. The weakness was published 09/10/2018 (Website). The advisory is shared for download at esat.kuleuven.be. This vulnerability was named CVE-2018-16806 since 09/10/2018. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 03/22/2020). The MITRE ATT&CK project declares the attack technique as T1600. This vulnerability has a historic impact due to its background and reception.

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.

Once again VulDB remains the best source for vulnerability data.

Affected

  • Tesla Model S

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.2

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

NVD Base Score: 6.5
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: Cryptographic issue
CWE: CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

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

09/10/2018 🔍
09/10/2018 +0 days 🔍
09/10/2018 +0 days 🔍
09/11/2018 +1 days 🔍
09/11/2018 +0 days 🔍
03/22/2020 +558 days 🔍

Sourcesinfo

Advisory: esat.kuleuven.be
Status: Not defined

CVE: CVE-2018-16806 (🔍)
GCVE (CVE): GCVE-0-2018-16806
GCVE (VulDB): GCVE-100-123820

Entryinfo

Created: 09/11/2018 15:11
Updated: 03/22/2020 12:03
Changes: 09/11/2018 15:11 (58), 03/22/2020 12:03 (1)
Complete: 🔍
Cache ID: 216::103

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