fix(security): remediate SonarQube vulnerability - use absolute path for docker binary (S4036) - #146
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Resolve SonarQube security hotspot go:S4036 by using exec.LookPath to resolve the docker binary to an absolute path before execution. This avoids relying on PATH lookup, mitigating CWE-426 (Untrusted Search Path) and CWE-427 (Uncontrolled Search Path Element). - Added dockerBinaryPath helper to resolve docker's absolute path - Updated ensureDockerImageBuilt to use resolved path - Updated setupMCPClient Docker args to use resolved path Co-Authored-By: parker.duff@codeium.com <parker.duff@codeium.com>
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SonarQube Vulnerability Remediation
Rule: go:S4036 — Searching OS commands in PATH is security-sensitive
Severity: LOW
CWE: CWE-426 (Untrusted Search Path), CWE-427 (Uncontrolled Search Path Element)
Security Category: Others
Parsing Summary
e2e/e2e_test.go)Fix Summary
Changes
The
e2e/e2e_test.gofile usedexec.Command("docker", ...)which resolves thedockerbinary via PATH lookup at runtime. If PATH contains a writable directory, an attacker could place a maliciousdockerbinary there and have it executed instead.Fix applied:
dockerBinaryPath()helper that usesexec.LookPath("docker")to resolve the absolute path to the docker binary upfrontensureDockerImageBuilt()(line 80) to use the resolved absolute pathsetupMCPClient()Docker args (line 129) to use the resolved absolute path — same pattern, same riskThis ensures the binary path is resolved once to an absolute path, eliminating reliance on PATH directory ordering during execution.
Tradeoffs
exec.LookPathstill reads PATH to find the binary, but the key improvement is that it resolves to a verified absolute path before execution, which is the SonarQube-recommended remediation pattern for Got.Helper()andrequire.NoError()so test failures produce clean diagnostics if docker is not installedAlternatives Considered
/usr/bin/docker: Rejected because docker can be installed in various locations (/usr/local/bin,/snap/bin, etc.)Closes:
Link to Devin session: https://app.devin.ai/sessions/1636e40763c34de0bc4b63f9fdc0216d
Requested by: @parkerduff
Devin Review