Vulnerability · Published May 3, 2024 · Assigned by zdi

CVE-2023-32157Tesla Model 3 bsa_server BIP Heap-based Buffer Overflow Arbitrary Code Execution Vulnerability

Medium 4.6

In plain English

A medium-severity heap buffer overflow in Model 3 from Tesla. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).

Severity (CVSS 3.0)4.6Medium

Exploit odds (30 days)0.4%top 65.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Tesla Model 3 bsa_server BIP Heap-based Buffer Overflow Arbitrary Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected Tesla Model 3 vehicles. An attacker must first obtain the ability to pair a malicious Bluetooth device with the target system in order to exploit this vulnerability. The specific flaw exists within the bsa_server process. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of an unprivileged user in a sandboxed process. . Was ZDI-CAN-20737.

Affected products (as reported)

Vendor	Product	Versions
Tesla	Model 3	Model 3 - 2023.6

Weakness: CWE-122 · Vector: CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

References

ZDI-23-973 x_research-advisory