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From: Xin LI <delphij@FreeBSD.org>
Date: Tue, 14 Jan 2014 19:10:38 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r260640 - releng/10.0/contrib/bsnmp/lib
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Author: delphij
Date: Tue Jan 14 19:10:38 2014
New Revision: 260640
URL: http://svnweb.freebsd.org/changeset/base/260640

Log:
  MFS r260638 (MFC r260636):
  
  Fix bsnmpd remote denial of service vulnerability.
  
  Reported by:	dinoex
  Submitted by:	harti
  Security:	FreeBSD-SA-14:01.bsnmpd
  Security:	CVE-2014-1452
  Approved by:	re (gjb)

Modified:
  releng/10.0/contrib/bsnmp/lib/snmpagent.c
Directory Properties:
  releng/10.0/   (props changed)

Modified: releng/10.0/contrib/bsnmp/lib/snmpagent.c
==============================================================================
--- releng/10.0/contrib/bsnmp/lib/snmpagent.c	Tue Jan 14 19:04:33 2014	(r260639)
+++ releng/10.0/contrib/bsnmp/lib/snmpagent.c	Tue Jan 14 19:10:38 2014	(r260640)
@@ -499,6 +499,11 @@ snmp_getbulk(struct snmp_pdu *pdu, struc
 	for (cnt = 0; cnt < pdu->error_index; cnt++) {
 		eomib = 1;
 		for (i = non_rep; i < pdu->nbindings; i++) {
+
+			if (resp->nbindings == SNMP_MAX_BINDINGS)
+				/* PDU is full */
+				goto done;
+
 			if (cnt == 0) 
 				result = do_getnext(&context, &pdu->bindings[i],
 				    &resp->bindings[resp->nbindings], pdu);