Apache bRPC, a widely used open-source Remote Procedure Call (RPC) framework, contains a critical remote command-injection vulnerability in its built-in heap profiler service, allowing attackers to execute arbitrary commands on affected systems.
The vulnerability affects all Apache bRPC versions prior to 1.15.0 across all platforms.
Vulnerability Details
The vulnerability exists in the bRPC heap profiler service endpoint (/pprof/heap), which is designed to facilitate jemalloc memory profiling operations.
| CVE ID | Affected Versions | Severity | Attack Vector | Fixed Version |
|---|---|---|---|---|
| CVE-2025-60021 | Apache bRPC 1.11.0 – 1.14.x | Important | Remote Command Injection | 1.15.0 |
The root cause stems from inadequate input validation on the extra_options parameter. Attackers can exploit this flaw by injecting malicious command-line arguments into the unvalidated parameter, resulting in arbitrary remote command execution with the privileges of the bRPC service process.
The attack vector is straightforward: when the heap profiler processes user-supplied input in the extra_options field, it directly executes this data as command-line arguments without proper sanitization or validation.
This design flaw enables attackers to bypass security controls and execute system commands remotely.
Organizations deploying Apache bRPC for distributed systems architecture face significant exposure. The vulnerability is particularly concerning for services that expose the heap profiler endpoint to untrusted networks or when bRPC instances run with elevated privileges.
Successful exploitation could lead to complete system compromise, data exfiltration, lateral movement within network infrastructure, and deployment of persistent backdoors.
The affected versions span a significant range, all releases before 1.15.0, meaning legacy deployments remain at critical risk unless actively patched.
Organizations should immediately audit their Apache bRPC deployments to identify vulnerable instances.
The Apache bRPC project has released version 1.15.0, which implements proper input validation for the extra_options parameter.
Organizations have two remediation pathways:
Primary approach: Upgrade to Apache bRPC 1.15.0 or later. This update resolves the vulnerability by implementing comprehensive input validation mechanisms that prevent malicious command injection.
Alternative approach: Apply the security patch available at the official GitHub repository (pull request #3101) if immediate version upgrades are not feasible due to dependency constraints or testing requirements. This targeted patch addresses the vulnerability without requiring a full version migration.
Security teams should prioritize this vulnerability as high-risk. Immediately identify all bRPC instances in your infrastructure, determine their versions, and assess network exposure.
For critical systems, implement network segmentation to restrict access to the /pprof/heap endpoint. Disable the heap profiler service if not actively used for performance monitoring.
Implement comprehensive logging and monitoring for heap profiler endpoint access. Additionally, consider deploying Web Application Firewalls (WAF) configured to detect and block suspicious parameters in bRPC requests as a temporary compensating control while upgrades are staged.
The vulnerability was responsibly disclosed by researcher Simcha Kosman. Further technical details are available through the official CVE record and Apache bRPC security advisory channels.
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