Age Encryption Tool Flaw Allows Arbitrary Code Execution via Plugin Names
A validation bypass in the age encryption utility exposes systems to remote code execution when processing specially crafted recipient or identity strings. Ubuntu has released a security patch addressing the plugin name validation vulnerability.
TL;DR
- age encryption tool fails to properly validate plugin names, enabling arbitrary code execution
- Attackers can exploit crafted recipient or identity strings to trigger malicious program execution
- Ubuntu security update USN-8372-1 patches the vulnerability across affected distributions
- Organizations using age for file encryption should apply updates immediately to prevent exploitation
The age encryption utility, widely used for secure file encryption and key management, contains a critical input validation flaw that could allow attackers to execute arbitrary code on affected systems. The vulnerability stems from insufficient validation of plugin names when processing recipient and identity strings, creating a pathway for remote code execution.
Ubuntu has released security notice USN-8372-1 to address this issue across supported distributions. The flaw is particularly concerning for organizations that rely on age for sensitive data protection, as it undermines the tool's security guarantees and could be exploited during routine encryption operations.
Vulnerability Details
- age fails to properly validate plugin names in recipient and identity string parameters
- Attackers can supply crafted strings designed to bypass validation checks
- Successful exploitation leads to arbitrary program execution with the privileges of the age process
- The vulnerability affects multiple Ubuntu releases and versions of the age tool
Remediation and Impact
- Ubuntu security update USN-8372-1 implements proper plugin name validation
- Organizations should prioritize patching systems running age encryption utilities
- Review logs for suspicious age operations or unexpected process execution
- Consider restricting age usage to trusted, validated input sources until patched
- Verify integrity of files encrypted with potentially compromised age instances
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