Horizon Alert
Summary of the vulnerability and why it matters
This vulnerability in Automotive Grade Linux allows attackers to write files anywhere on the system by manipulating zip archives during widget installation. Even if the installation is later deemed invalid, malicious files could remain. This could lead to a complete system compromise.
- Attackers can bypass security checks.
- Malicious files can be permanently installed.
- Affects systems running AGL app-framework-main.
Attack Path
How an attacker could exploit the issue
An attacker can exploit this vulnerability to write arbitrary files to the filesystem by crafting a malicious ZIP archive. This archive would contain specially named files that use dot notation for directory traversal, allowing them to overwrite critical system files or plant malicious code before signature verification occurs. Even if the widget installation fails due to signature checks, the overwritten files will persist.
- Unauthenticated, network-based access.
- Malicious ZIP archive.
- Extraction before signature verification.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability is unlikely to be weaponized by widespread automated attacks due to its embedded nature and the specific access required. Attackers would typically target less isolated systems with broader attack surfaces.
- Restricted target environment
- Exploitation requires local access
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
Teams should prioritize investigating and containing affected Automotive Grade Linux systems immediately, as the vulnerability allows unauthenticated code execution before signature verification. Given the criticality and potential for full system compromise, consider taking services offline if feasible until patches or robust mitigations can be applied.
- Block untrusted widget installations.
- Monitor for unexpected file creation.
- Update AGL app-framework-main beyond 17.1.12.
