Vulnerability · Published Oct 31, 2023 · Assigned by GitHub_M

CVE-2023-46256PX4-Autopilot Heap Buffer Overflow Bug

Medium 4.4

In plain English

A medium-severity heap buffer overflow in PX4-Autopilot from PX4. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 55% of all known vulnerabilities).

Severity (CVSS 3.1)4.4Medium

Exploit odds (30 days)0.7%top 45.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

PX4-Autopilot provides PX4 flight control solution for drones. In versions 1.14.0-rc1 and prior, PX4-Autopilot has a heap buffer overflow vulnerability in the parser function due to the absence of `parserbuf_index` value checking. A malfunction of the sensor device can cause a heap buffer overflow with leading unexpected drone behavior. Malicious applications can exploit the vulnerability even if device sensor malfunction does not occur. Up to the maximum value of an `unsigned int`, bytes sized data can be written to the heap memory area. As of time of publication, no fixed version is available.

Affected products (as reported)

Vendor	Product	Versions
PX4	PX4-Autopilot	<= 1.14.0-rc1

Weakness: CWE-122, CWE-120 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:L

References

https://github.com/PX4/PX4-Autopilot/security/advisories/GHSA-5hvv-q2r5-rppw x_refsource_CONFIRM
https://github.com/PX4/PX4-Autopilot/blob/main/src/drivers/distance_sensor/lightware_laser_serial/parser.cpp#L87 x_refsource_MISC