Headline
CVE-2022-42431: ZDI-22-1407
This vulnerability allows local attackers to escalate privileges on affected Tesla vehicles. An attacker must first obtain the ability to execute privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the bcmdhd driver. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root. Was ZDI-CAN-17544.
October 7th, 2022
Tesla bcmdhd Buffer Overflow Privilege Escalation Vulnerability****ZDI-22-1407
ZDI-CAN-17544
CVE ID
CVE-2022-42431
CVSS SCORE
8.8, (AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H)
AFFECTED VENDORS
Tesla
AFFECTED PRODUCTS
Model 3
VULNERABILITY DETAILS
This vulnerability allows local attackers to escalate privileges on affected Tesla vehicles. An attacker must first obtain the ability to execute privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the bcmdhd driver. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root.
ADDITIONAL DETAILS
Fixed in Tesla’s 2022.28 release.
DISCLOSURE TIMELINE
- 2022-05-24 - Vulnerability reported to vendor
- 2022-10-07 - Coordinated public release of advisory
CREDIT
Vincent DEHORS of @Synacktiv
BACK TO ADVISORIES
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