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Fix UB in Windows verifier EKU handling #127

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merged 2 commits into from
Aug 23, 2024
Merged

Fix UB in Windows verifier EKU handling #127

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8a96fef
Properly NULL terminate EKU strings on Windows
complexspaces Aug 23, 2024
51b6577
Clarify Windows C-string handling
complexspaces Aug 23, 2024
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5 changes: 4 additions & 1 deletion rustls-platform-verifier/src/verification/mod.rs
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Expand Up @@ -74,14 +74,17 @@ fn invalid_certificate(reason: impl Into<String>) -> rustls::Error {
)))
}

#[cfg(any(windows, target_os = "android"))]
/// List of EKUs that one or more of that *must* be in the end-entity certificate.
///
/// Legacy server-gated crypto OIDs are assumed to no longer be in use.
///
/// Currently supported:
/// - id-kp-serverAuth
// TODO: Chromium also allows for `OID_ANY_EKU` on Android.
#[cfg(target_os = "windows")]
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const ALLOWED_EKUS: &[*mut u8] = &["1.3.6.1.5.5.7.3.1\0".as_ptr() as *mut u8];
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#[cfg(target_os = "android")]
pub const ALLOWED_EKUS: &[&str] = &["1.3.6.1.5.5.7.3.1"];

impl Verifier {
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