CVE-2023-29193 (published 2023-04-14T20:15Z)

SpiceDB is an open source, Google Zanzibar-inspired, database system for creating and managing security-critical application permissions. The `spicedb serve` command contains a flag named `--grpc-preshared-key` which is used to protect the gRPC API from being accessed by unauthorized requests. The values of this flag are to be considered sensitive, secret data. The `/debug/pprof/cmdline` endpoint served by the metrics service (defaulting running on port `9090`) reveals the command-line flags provided for debugging purposes. If a password is set via the `--grpc-preshared-key` then the key is revealed by this endpoint along with any other flags provided to the SpiceDB binary. This issue has been fixed in version 1.19.1.\n\n### Impact\n\nAll deployments abiding by the recommended best practices for production usage are **NOT affected**:\n- Authzed's SpiceDB Serverless\n- Authzed's SpiceDB Dedicated\n- SpiceDB Operator\n\nUsers configuring SpiceDB via environment variables are **NOT affected**.\n\nUsers **MAY be affected** if they expose their metrics port to an untrusted network and are configuring `--grpc-preshared-key` via command-line flag.\n\n### Patches\n\nTODO\n\n### Workarounds\n\nTo workaround this issue you can do one of the following:\n\n- Configure the preshared key via an environment variable (e.g. `SPICEDB_GRPC_PRESHARED_KEY=yoursecret spicedb serve`)\n- Reconfigure the `--metrics-addr` flag to bind to a trusted network (e.g. `--metrics-addr=localhost:9090`)\n- Disable the metrics service via the flag (e.g. `--metrics-enabled=false`)\n- Adopt one of the recommended deployment models: [Authzed's managed services](https://authzed.com/pricing) or the [SpiceDB Operator](https://github.com/authzed/spicedb-operator)\n\n### References\n\n- [GitHub Security Advisory issued for SpiceDB](https://github.com/authzed/spicedb/security/advisories/GHSA-cjr9-mr35-7xh6)\n- [Go issue #22085](https://github.com/golang/go/issues/22085) for documenting the risks of exposing pprof to the internet\n- [Go issue #42834](https://github.com/golang/go/issues/42834) discusses preventing pprof registration to the default serve mux\n- [semgrep rule go.lang.security.audit.net.pprof.pprof-debug-exposure](https://semgrep.dev/r?q=go.lang.security.audit.net.pprof) checks for a variation of this issue\n\n### Credit\n\nWe'd like to thank Amit Laish, a security researcher at GE Vernova for responsibly disclosing this vulnerability.\n

CVSS v3 base score: 7.5, HIGH (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)

Weakness information:
cwe_id: CWE-209
cwe_name: Generation of Error Message Containing Sensitive Information
description: The product generates an error message that includes sensitive information about its environment, users, or associated data.
extended_description: The sensitive information may be valuable information on its own (such as a password), or it may be useful for launching other, more serious attacks. The error message may be created in different ways:
           
             self-generated: the source code explicitly constructs the error message and delivers it
	     externally-generated: the external environment, such as a language interpreter, handles the error and constructs its own message, whose contents are not under direct control by the programmer
	   
	 An attacker may use the contents of error messages to help launch another, more focused attack. For example, an attempt to exploit a path traversal weakness (CWE-22) might yield the full pathname of the installed application. In turn, this could be used to select the proper number of ".." sequences to navigate to the targeted file. An attack using SQL injection (CWE-89) might not initially succeed, but an error message could reveal the malformed query, which would expose query logic and possibly even passwords or other sensitive information used within the query.
         

Fix information:
repo_url: https://github.com/authzed/spicedb
commit_details: repo_url: https://github.com/authzed/spicedb
author: Jimmy Zelinskie
author_date: 2023-04-13 11:51:01-04:00
msg: Merge pull request from GHSA-cjr9-mr35-7xh6

pkg/cmd: disable cmdline profile
repository: repo_url: https://github.com/authzed/spicedb
repo_name: authzed/spicedb
description: Open Source, Google Zanzibar-inspired permissions database to enable fine-grained authorization for customer applications
repo_language: Go
owner: authzed