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From a7a94612aa3b16779e2c74e1fa353b5d9786c602 Mon Sep 17 00:00:00 2001
From: Daniel Veillard <veillard@redhat.com>
Date: Tue, 9 Feb 2016 12:55:29 +0100
Subject: [PATCH] Heap-based buffer overread in xmlNextChar
For https://bugzilla.gnome.org/show_bug.cgi?id=759671
when the end of the internal subset isn't properly detected
xmlParseInternalSubset should just return instead of trying
to process input further.
Upstream-Status: Backport
CVE: CVE-2016-1762
Signed-off-by: Armin Kuster <akuster@mvista.com>
---
parser.c | 1 +
result/errors/754946.xml.err | 10 +++++-----
result/errors/content1.xml.err | 2 +-
result/valid/t8.xml.err | 2 +-
result/valid/t8a.xml.err | 2 +-
5 files changed, 9 insertions(+), 8 deletions(-)
Index: libxml2-2.9.2/parser.c
===================================================================
--- libxml2-2.9.2.orig/parser.c
+++ libxml2-2.9.2/parser.c
@@ -8480,6 +8480,7 @@ xmlParseInternalSubset(xmlParserCtxtPtr
*/
if (RAW != '>') {
xmlFatalErr(ctxt, XML_ERR_DOCTYPE_NOT_FINISHED, NULL);
+ return;
}
NEXT;
}
Index: libxml2-2.9.2/result/errors/754946.xml.err
===================================================================
--- libxml2-2.9.2.orig/result/errors/754946.xml.err
+++ libxml2-2.9.2/result/errors/754946.xml.err
@@ -11,9 +11,9 @@ Entity: line 1: parser error : DOCTYPE i
Entity: line 1:
A<lbbbbbbbbbbbbbbbbbbb_
^
-./test/errors/754946.xml:1: parser error : Start tag doesn't start and stop in the same entity
->%SYSTEM;<