IntenseWebs/nginx
3
0
Fork 0
mirror of https://github.com/nginx/nginx.git synced 2024-12-22 07:03:27 -06:00
Code Issues Packages Projects Releases Wiki Activity

Overflow detection in ngx_http_parse_chunked().

Browse Source
This commit is contained in:
Ruslan Ermilov 2015-03-17 00:26:27 +03:00
parent 514cdb190f
commit 4fe0a09942
1 changed files with 8 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
src/http/ngx_http_parse.c
View File

@ -2155,6 +2155,10 @@ ngx_http_parse_chunked(ngx_http_request_t *r, ngx_buf_t *b,
goto invalid;
case sw_chunk_size:
if (ctx->size > NGX_MAX_OFF_T_VALUE / 16) {
goto invalid;
}
if (ch >= '0' && ch <= '9') {
ctx->size = ctx->size * 16 + (ch - '0');
break;
@ -2304,6 +2308,10 @@ data:
ctx->state = state;
b->pos = pos;
if (ctx->size > NGX_MAX_OFF_T_VALUE - 5) {
goto invalid;
}
switch (state) {
case sw_chunk_start:
@ -2340,10 +2348,6 @@ data:
}
if (ctx->size < 0 || ctx->length < 0) {
goto invalid;
}
return rc;
done: