Brook's tproxy server is vulnerable to a drive-by command injection.

HIGH 8.8CVE-2023-33965 · GHSA-vfrj-fv6p-3cpf · Published 01/06/2023 · updated 17/06/2026

In short

CVE-2023-33965 is a HIGH (CVSS 8.8) vulnerability affecting github.com/txthinking/brook, brook (txthinking).
Chance of exploitation in the next 30 days (EPSS): 1.6%, higher than 75.7% of all vulnerabilities.
Fix: update to 20230606 or later.

Package	Affected versions	Patched versions
github.com/txthinking/brook Go	`< 20230606`	`20230606`
brook txthinking	`< 20230606`	`20230606`

Description

The tproxy server is vulnerable to a drive-by command injection. An attacker may fool a victim into visiting a malicious web page which will trigger requests to the local tproxy service leading to remote code execution.

NVD description

Brook is a cross-platform programmable network tool. The `tproxy` server is vulnerable to a drive-by command injection. An attacker may fool a victim into visiting a malicious web page which will trigger requests to the local `tproxy` service leading to remote code execution. A patch is available in version 20230606.

References

txthinking/brook security advisory · WEB
nvd.nist.gov/vuln/detail/CVE-2023-33965 · ADVISORY
txthinking/brook commit 314d707 · WEB
txthinking/brook · PACKAGE

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