From: Eric Covener <covener@apache.org>
Date: Sun, 26 Apr 2026 15:53:19 +0000 (+0000)
Subject: fix ajp_parse_data message len check
X-Git-Url: http://git.ipfire.org/gitweb/?a=commitdiff_plain;h=91d14cb926b1be8a53ebc334d6274027be99ac12;p=thirdparty%2Fapache%2Fhttpd.git

fix ajp_parse_data message len check


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1933344 13f79535-47bb-0310-9956-ffa450edef68
---

diff --git a/modules/proxy/ajp_header.c b/modules/proxy/ajp_header.c
index 00db324e42..358ee084ec 100644
--- a/modules/proxy/ajp_header.c
+++ b/modules/proxy/ajp_header.c
@@ -835,6 +835,11 @@ apr_status_t  ajp_parse_data(request_rec  *r, ajp_msg_t *msg,
      * 1                 : The last byte of this message always seems to be
      *                     0x00 and is not part of the chunk.
      */
+    if (msg->len < AJP_HEADER_LEN + AJP_HEADER_SZ_LEN + 1 + 1) {
+        ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO()
+               "ajp_parse_data: Message too small");
+        return AJP_EBAD_HEADER;
+    }
     expected_len = msg->len - (AJP_HEADER_LEN + AJP_HEADER_SZ_LEN + 1 + 1);
     if (*len != expected_len) {
         ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00998)