Process crash via unchecked particle-count parameter
Published Dec 5, 2024 · Updated Dec 6, 2024
Buffer overflow in nav2_amcl in ROS 2 and Nav2 Humble allows remote attackers to crash the process using a crafted YAML file. The max_particles parameter accepts extreme values that reach pf_alloc and pf_kdtree_alloc, where unchecked size arithmetic causes allocator overflow or excessive allocation. The attacker must cause nav2_amcl to start with the supplied parameter file; public demonstrations show process aborts and memory exhaustion, not code execution.
Summary
What happened
Buffer overflow in nav2_amcl in ROS 2 and Nav2 Humble allows remote attackers to crash the process using a crafted YAML file. The max_particles parameter accepts extreme values that reach pf_alloc and pf_kdtree_alloc, where unchecked size arithmetic causes allocator overflow or excessive allocation. The attacker must cause nav2_amcl to start with the supplied parameter file; public demonstrations show process aborts and memory exhaustion, not code execution.
The record
- CVE
- CVE-2024-37861
- Published
- Dec 5, 2024
- Updated
- Dec 6, 2024
- Vendor
- Open Source Robotics Foundation
- Product
- ROS 2
- Classifications
- CWE-120, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 5, 2024CVE publishedPublication date reported by the CVE source.
- Dec 6, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=0 <=*
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
- Extreme max_particles YAML proof of conceptproof of concept · demonstrated
- Negative max_particles YAML proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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