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radius-gw-proxy: improve header length sanity check

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Signed-off-by: John Crispin <john@phrozen.org>
This commit is contained in:
John Crispin
2023-06-14 15:29:31 +02:00
parent 105e55c01a
commit a7fe885dc5
1 changed files with 7 additions and 1 deletions
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8
feeds/ucentral/radius-gw-proxy/src/main.c
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@@ -158,9 +158,15 @@ radius_parse(char *buf, unsigned int len, int port, enum socket_type type, int t
struct radius_tlv *proxy_state = NULL; struct radius_tlv *proxy_state = NULL;
char proxy_state_str[256] = {}; char proxy_state_str[256] = {};
void *avp = hdr->avp; void *avp = hdr->avp;
unsigned int len_orig = ntohs(hdr->len); unsigned int len_orig;
uint8_t localhost[] = { 0x7f, 0, 0, 1 }; uint8_t localhost[] = { 0x7f, 0, 0, 1 };
if (len < sizeof(*hdr)) {
ULOG_ERR("invalid packet length, %d\n", len);
return -1;
}
len_orig = ntohs(hdr->len);
if (len_orig != len) { if (len_orig != len) {
ULOG_ERR("invalid header length, %d %d\n", len_orig, len); ULOG_ERR("invalid header length, %d %d\n", len_orig, len);
return -1; return -1;