How severe is GHSA-wj7f-468m-6mv8?

GHSA-wj7f-468m-6mv8 has a CVSS score of 4/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by GHSA-wj7f-468m-6mv8?

GHSA-wj7f-468m-6mv8 affects the following packages: birdcage (crates.io). Ecosystems affected: crates.io.

How do I fix GHSA-wj7f-468m-6mv8?

Update birdcage to 0.7.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-wj7f-468m-6mv8 is resolved across your whole dependency graph.

How do I detect GHSA-wj7f-468m-6mv8 in my crates.io dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for birdcage. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

How do I mitigate GHSA-wj7f-468m-6mv8 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

How does O3 Security protect against GHSA-wj7f-468m-6mv8?

O3 pinpoints whether GHSA-wj7f-468m-6mv8 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Is GHSA-wj7f-468m-6mv8 actively exploited in the wild?

No public exploit code has been indexed for GHSA-wj7f-468m-6mv8 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

When was GHSA-wj7f-468m-6mv8 published, and has it been updated?

GHSA-wj7f-468m-6mv8 was published on December 1, 2023. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🦀 crates.io

GHSA-wj7f-468m-6mv8

MEDIUM

Environment variables still accessible through /proc

Published

Dec 1, 2023

Updated

Dec 1, 2023

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Blast Radius

1 pkg affected

🦀birdcage

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects crates.io packages — download data is not available via public APIs for these ecosystems.

Description

Impact

Environment variables can be read from procfs unless a new process is started.

PoC

use birdcage::{Birdcage, Sandbox};
use std::{env, fs};

fn main() {
    Birdcage::new().lock().unwrap();

    assert_eq!(env::var_os("SECRET"), None);

    let environ = fs::read_to_string("/proc/self/environ").unwrap();
    assert!(!environ.contains("SECRET"), "ENVIRON CONTAINS SECRET:\n{environ}");
}

$  SECRET=test cargo run
thread 'main' panicked at src/main.rs:10:5:
ENVIRON CONTAINS SECRET:
 [truncated]

Possible Solutions

The simplest solution would be relying on the ptrace isolation and always spawning a new process by changing birdcage's API to create a new command. With an additional PID namespace the guarantees could be even further reinforced.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🦀crates.io	`birdcage`	all versions	0.7.0

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for birdcage. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update birdcage to 0.7.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-wj7f-468m-6mv8 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-wj7f-468m-6mv8 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-wj7f-468m-6mv8. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Impact Environment variables can be read from procfs unless a new process is started. ### PoC ``` use birdcage::{Birdcage, Sandbox}; use std::{env, fs}; fn main() { Birdcage::new().lock().unwrap(); assert_eq!(env::var_os("SECRET"), None); let environ = fs::read_to_string("/proc/self/environ").unwrap(); assert!(!environ.contains("SECRET"), "ENVIRON CONTAINS SECRET:\n{environ}"); } ``` ``` $ SECRET=test cargo run thread 'main' panicked at src/main.rs:10:5: ENVIRON CONTAINS SECRET: [truncated] ``` ### Possible Solutions The simplest solution would be relying on the

O3 Security · Impact-Aware SCA

Is GHSA-wj7f-468m-6mv8 in your dependencies?

O3 detects GHSA-wj7f-468m-6mv8 across crates.io dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my dependencies How O3 SCA works