Fenrir Fixes#10675
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Fixes F-5393.
…ng it. Fixes F-4023.
Fixes F-4228.
…M_resize. Also fix a potential overread in wolfSSL_BUF_MEM_grow_ex for the non-realloc case. Fixes F-5730
Fixes F-4285.
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Pull request overview
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This PR applies a set of security/correctness fixes across cryptographic routines and URL/buffer handling to address multiple Fenrir issues (F-5393, F-4023, F-4228, F-5730, F-4285).
Changes:
- Zeroizes sensitive temporary crypto state / output buffers on error paths (ChaCha20-Poly1305 AEAD context, AES-GCM plaintext on failure).
- Tightens URL parsing validation (IPv6 literal termination, port length/range checks).
- Fixes size/copy handling in
WOLFSSL_BUF_MEM_*growth/resize to avoid truncation and over-reads.
Reviewed changes
Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
| wolfcrypt/src/chacha20_poly1305.c | Zeroize AEAD working state before freeing temporary buffer. |
| wolfcrypt/src/aes.c | Zero plaintext output on AES-GCM decrypt failure. |
| src/wolfio.c | Reject malformed bracketed IPv6 literals and malformed/out-of-range ports. |
| src/ssl.c | Prevent size_t→int truncation and fix potential over-read in buffer growth under WOLFSSL_NO_REALLOC. |
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| ForceZero(aead, sizeof(ChaChaPoly_Aead)); | ||
| WC_FREE_VAR_EX(aead, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
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Description
Fixes F-5393, F-4023, F-4228, F-5730, F-4285
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