mirror of
https://gitlab.alpinelinux.org/alpine/aports.git
synced 2025-12-26 03:42:37 +01:00
47 lines
1.3 KiB
Diff
47 lines
1.3 KiB
Diff
diff --git a/src/reqs.c b/src/reqs.c
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index 2e13f48..ce46bf3 100644
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--- a/src/reqs.c
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+++ b/src/reqs.c
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@@ -641,6 +641,11 @@ add_header_to_connection (hashmap_t hashofheaders, char *header, size_t len)
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return hashmap_insert (hashofheaders, header, sep, len);
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}
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+/* define max number of headers. big enough to handle legitimate cases,
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+ * but limited to avoid DoS
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+ */
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+#define MAX_HEADERS 10000
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+
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/*
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* Read all the headers from the stream
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*/
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@@ -648,6 +653,7 @@ static int get_all_headers (int fd, hashmap_t hashofheaders)
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{
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char *line = NULL;
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char *header = NULL;
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+ int count;
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char *tmp;
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ssize_t linelen;
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ssize_t len = 0;
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@@ -656,7 +662,7 @@ static int get_all_headers (int fd, hashmap_t hashofheaders)
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assert (fd >= 0);
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assert (hashofheaders != NULL);
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- for (;;) {
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+ for (count = 0; count < MAX_HEADERS; count++) {
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if ((linelen = readline (fd, &line)) <= 0) {
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safefree (header);
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safefree (line);
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@@ -722,6 +728,12 @@ static int get_all_headers (int fd, hashmap_t hashofheaders)
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safefree (line);
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}
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+
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+ /* if we get there, this is we reached MAX_HEADERS count.
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+ bail out with error */
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+ safefree (header);
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+ safefree (line);
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+ return -1;
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}
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/*
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