Mercurial > hg > nginx-quic
view auto/lib/md5/conf @ 4617:972642646f06
Rewrite: fixed escaping and possible segfault (ticket #162).
The following code resulted in incorrect escaping of uri and possible
segfault:
location / {
rewrite ^(.*) $1?c=$1;
return 200 "$uri";
}
If there were arguments in a rewrite's replacement string, and length was
actually calculated (due to duplicate captures as in the example above,
or variables present), the is_args flag was set and incorrectly copied
after length calculation. This resulted in escaping applied to the uri part
of the replacement, resulting in incorrect escaping. Additionally, buffer
was allocated without escaping expected, thus this also resulted in buffer
overrun and possible segfault.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Fri, 11 May 2012 13:19:22 +0000 |
parents | d620f497c50f |
children | b0a616778038 |
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# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. if [ $MD5 != NONE ]; then if grep MD5_Init $MD5/md5.h 2>&1 >/dev/null; then # OpenSSL md5 OPENSSL_MD5=YES have=NGX_HAVE_OPENSSL_MD5 . auto/have have=NGX_OPENSSL_MD5 . auto/have else # rsaref md5 OPENSSL_MD5=NO fi have=NGX_HAVE_MD5 . auto/have CORE_INCS="$CORE_INCS $MD5" case "$NGX_CC_NAME" in msvc* | owc* | bcc) LINK_DEPS="$LINK_DEPS $MD5/md5.lib" CORE_LIBS="$CORE_LIBS $MD5/md5.lib" ;; icc*) LINK_DEPS="$LINK_DEPS $MD5/libmd5.a" # to allow -ipo optimization we link with the *.o but not library CORE_LIBS="$CORE_LIBS $MD5/md5_dgst.o" if [ $MD5_ASM = YES ]; then CORE_LIBS="$CORE_LIBS $MD5/asm/mx86-elf.o" fi ;; *) LINK_DEPS="$LINK_DEPS $MD5/libmd5.a" CORE_LIBS="$CORE_LIBS $MD5/libmd5.a" #CORE_LIBS="$CORE_LIBS -L $MD5 -lmd5" ;; esac else if [ "$NGX_PLATFORM" != win32 ]; then MD5=NO # FreeBSD, Solaris 10 ngx_feature="system md library" ngx_feature_name=NGX_HAVE_MD5 ngx_feature_run=no ngx_feature_incs="#include <md5.h>" ngx_feature_path= ngx_feature_libs="-lmd" ngx_feature_test="MD5_CTX md5; MD5Init(&md5)" . auto/feature ngx_md5_lib="system md" if [ $ngx_found = no ]; then # Solaris 8/9 ngx_feature="system md5 library" ngx_feature_libs="-lmd5" . auto/feature ngx_md5_lib="system md5" fi if [ $ngx_found = no ]; then # OpenSSL crypto library ngx_feature="OpenSSL md5 crypto library" ngx_feature_name="NGX_OPENSSL_MD5" ngx_feature_incs="#include <openssl/md5.h>" ngx_feature_libs="-lcrypto" ngx_feature_test="MD5_CTX md5; MD5_Init(&md5)" . auto/feature ngx_md5_lib="system crypto" if [ $ngx_found = yes ]; then have=NGX_HAVE_OPENSSL_MD5_H . auto/have have=NGX_HAVE_MD5 . auto/have fi fi if [ $ngx_found = yes ]; then CORE_LIBS="$CORE_LIBS $ngx_feature_libs" MD5=YES MD5_LIB=$ngx_md5_lib fi fi fi