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textproc/raptor2 heap overflow

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According to https://www.openwall.com/lists/oss-security/2017/06/07/1 there are
two heap overflows in raptor 2.0.15.

A CVE has been assigned:
  https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-18926

The upstream raptor github repo has a patch:
  590681e546.patch

PR:		250971
Submitted by:	truckman
MFH:		2020Q4
Security:	CVE-2017-18926
This commit is contained in:
Tobias C. Berner 2020-11-09 05:30:10 +00:00
parent af69cc7013
commit 20c7d0051b
Notes: svn2git 2021-03-31 03:12:20 +00:00 
svn path=/head/; revision=554671
2 changed files with 41 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
textproc/raptor2/Makefile
View File

@ -3,7 +3,7 @@
PORTNAME= raptor2
PORTVERSION= 2.0.15
PORTREVISION= 15
PORTREVISION= 16
CATEGORIES= textproc
MASTER_SITES= http://download.librdf.org/source/ \
SF/librdf/${PORTNAME}/${PORTVERSION}

40
textproc/raptor2/files/patch-CVE-2017-18926 Normal file
View File

@ -0,0 +1,40 @@
From 590681e546cd9aa18d57dc2ea1858cb734a3863f Mon Sep 17 00:00:00 2001
From: Dave Beckett <dave@dajobe.org>
Date: Sun, 16 Apr 2017 23:15:12 +0100
Subject: [PATCH] Calcualte max nspace declarations correctly for XML writer
(raptor_xml_writer_start_element_common): Calculate max including for
each attribute a potential name and value.
Fixes Issues #0000617 http://bugs.librdf.org/mantis/view.php?id=617
and #0000618 http://bugs.librdf.org/mantis/view.php?id=618
---
src/raptor_xml_writer.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git src/raptor_xml_writer.c.orig src/raptor_xml_writer.c
index 693b9468..0d3a36a5 100644
--- src/raptor_xml_writer.c.orig
+++ src/raptor_xml_writer.c
@@ -181,9 +181,10 @@ raptor_xml_writer_start_element_common(raptor_xml_writer* xml_writer,
size_t nspace_declarations_count = 0;
unsigned int i;
- /* max is 1 per element and 1 for each attribute + size of declared */
if(nstack) {
- int nspace_max_count = element->attribute_count+1;
+ int nspace_max_count = element->attribute_count * 2; /* attr and value */
+ if(element->name->nspace)
+ nspace_max_count++;
if(element->declared_nspaces)
nspace_max_count += raptor_sequence_size(element->declared_nspaces);
if(element->xml_language)
@@ -237,7 +238,7 @@ raptor_xml_writer_start_element_common(raptor_xml_writer* xml_writer,
}
}
- /* Add the attribute + value */
+ /* Add the attribute's value */
nspace_declarations[nspace_declarations_count].declaration=
raptor_qname_format_as_xml(element->attributes[i],
&nspace_declarations[nspace_declarations_count].length);