Unexpected drone behavior via unchecked parser index
Published Oct 31, 2023 · Updated Sep 5, 2024
Heap buffer overflow in PX4 Autopilot 1.14.0-rc1 and earlier allows attackers to alter drone behavior via crafted sensor data. The LightWare serial parser repeatedly increments parserbuf_index while writing digits into a 10-byte line buffer without enforcing an upper bound. A malfunctioning sensor or malicious application must feed the enabled driver; the overwrite can span an unsigned-integer range and produce unexpected flight behavior.
Summary
What happened
Heap buffer overflow in PX4 Autopilot 1.14.0-rc1 and earlier allows attackers to alter drone behavior via crafted sensor data. The LightWare serial parser repeatedly increments parserbuf_index while writing digits into a 10-byte line buffer without enforcing an upper bound. A malfunctioning sensor or malicious application must feed the enabled driver; the overwrite can span an unsigned-integer range and produce unexpected flight behavior.
The record
- CVE
- CVE-2023-46256
- Published
- Oct 31, 2023
- Updated
- Sep 5, 2024
- Vendor
- PX4
- Product
- PX4 Autopilot
- Classifications
- CWE-122, CWE-787, CWE-120, T1499.004
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Oct 31, 2023CVE publishedPublication date reported by the CVE source.
- Sep 5, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=<= 1.14.0-rc1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- PX4 LightWare serial parser trigger payloadproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo