Mercurial > hg > nginx
view src/core/ngx_sha1.h @ 7494:a42a6dfeb01a
Fixed incorrect length handling in ngx_utf8_length().
Previously, ngx_utf8_decode() was called from ngx_utf8_length() with
incorrect length, potentially resulting in out-of-bounds read when
handling invalid UTF-8 strings.
In practice out-of-bounds reads are not possible though, as autoindex, the
only user of ngx_utf8_length(), provides null-terminated strings, and
ngx_utf8_decode() anyway returns an errors when it sees a null in the
middle of an UTF-8 sequence.
Reported by Yunbin Liu.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 15 Apr 2019 20:14:07 +0300 |
parents | 9eefb38f0005 |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_SHA1_H_INCLUDED_ #define _NGX_SHA1_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> typedef struct { uint64_t bytes; uint32_t a, b, c, d, e, f; u_char buffer[64]; } ngx_sha1_t; void ngx_sha1_init(ngx_sha1_t *ctx); void ngx_sha1_update(ngx_sha1_t *ctx, const void *data, size_t size); void ngx_sha1_final(u_char result[20], ngx_sha1_t *ctx); #endif /* _NGX_SHA1_H_INCLUDED_ */