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diff --git a/modules/metadata/mod_remoteip.c b/modules/metadata/mod_remoteip.c
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index 4572ce1..a0cbc0f 100644
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--- a/modules/metadata/mod_remoteip.c
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+++ b/modules/metadata/mod_remoteip.c
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@@ -987,15 +987,13 @@ static remoteip_parse_status_t remoteip_process_v2_header(conn_rec *c,
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return HDR_ERROR;
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#endif
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default:
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- /* unsupported protocol, keep local connection address */
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- return HDR_DONE;
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+ /* unsupported protocol */
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+ ap_log_cerror(APLOG_MARK, APLOG_ERR, 0, c, APLOGNO(10183)
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+ "RemoteIPProxyProtocol: unsupported protocol %.2hx",
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+ (unsigned short)hdr->v2.fam);
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+ return HDR_ERROR;
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}
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break; /* we got a sockaddr now */
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-
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- case 0x00: /* LOCAL command */
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- /* keep local connection address for LOCAL */
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- return HDR_DONE;
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-
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default:
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/* not a supported command */
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ap_log_cerror(APLOG_MARK, APLOG_ERR, 0, c, APLOGNO(03507)
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@@ -1087,11 +1085,24 @@ static apr_status_t remoteip_input_filter(ap_filter_t *f,
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/* try to read a header's worth of data */
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while (!ctx->done) {
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if (APR_BRIGADE_EMPTY(ctx->bb)) {
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- ret = ap_get_brigade(f->next, ctx->bb, ctx->mode, block,
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- ctx->need - ctx->rcvd);
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+ apr_off_t got, want = ctx->need - ctx->rcvd;
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+
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+ ret = ap_get_brigade(f->next, ctx->bb, ctx->mode, block, want);
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if (ret != APR_SUCCESS) {
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+ ap_log_cerror(APLOG_MARK, APLOG_ERR, ret, f->c, APLOGNO(10184)
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+ "failed reading input");
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return ret;
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}
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+
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+ ret = apr_brigade_length(ctx->bb, 1, &got;;
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+ if (ret || got > want) {
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+ ap_log_cerror(APLOG_MARK, APLOG_ERR, ret, f->c, APLOGNO(10185)
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+ "RemoteIPProxyProtocol header too long, "
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+ "got %" APR_OFF_T_FMT " expected %" APR_OFF_T_FMT,
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+ got, want);
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+ f->c->aborted = 1;
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+ return APR_ECONNABORTED;
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+ }
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}
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if (APR_BRIGADE_EMPTY(ctx->bb)) {
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return block == APR_NONBLOCK_READ ? APR_SUCCESS : APR_EOF;
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@@ -1139,6 +1150,13 @@ static apr_status_t remoteip_input_filter(ap_filter_t *f,
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if (ctx->rcvd >= MIN_V2_HDR_LEN) {
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ctx->need = MIN_V2_HDR_LEN +
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remoteip_get_v2_len((proxy_header *) ctx->header);
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+ if (ctx->need > sizeof(proxy_v2)) {
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+ ap_log_cerror(APLOG_MARK, APLOG_ERR, 0, f->c, APLOGNO(10186)
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+ "RemoteIPProxyProtocol protocol header length too long");
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+ f->c->aborted = 1;
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+ apr_brigade_destroy(ctx->bb);
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+ return APR_ECONNABORTED;
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+ }
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}
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if (ctx->rcvd >= ctx->need) {
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psts = remoteip_process_v2_header(f->c, conn_conf,
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