From 689145fc5ae377eab088ee524c447223be29707f Mon Sep 17 00:00:00 2001 From: Armin Kuster Date: Sat, 9 Jul 2016 14:57:08 -0700 Subject: libxml2: Security fix for CVE-2016-1839 Affects libxml2 < 2.9.4 Signed-off-by: Armin Kuster --- .../libxml/libxml2/CVE-2016-1839.patch | 127 +++++++++++++++++++++ meta/recipes-core/libxml/libxml2_2.9.2.bb | 1 + 2 files changed, 128 insertions(+) create mode 100644 meta/recipes-core/libxml/libxml2/CVE-2016-1839.patch (limited to 'meta') diff --git a/meta/recipes-core/libxml/libxml2/CVE-2016-1839.patch b/meta/recipes-core/libxml/libxml2/CVE-2016-1839.patch new file mode 100644 index 0000000000..b6cf883da7 --- /dev/null +++ b/meta/recipes-core/libxml/libxml2/CVE-2016-1839.patch @@ -0,0 +1,127 @@ +From a820dbeac29d330bae4be05d9ecd939ad6b4aa33 Mon Sep 17 00:00:00 2001 +From: Pranjal Jumde +Date: Tue, 1 Mar 2016 11:34:04 -0800 +Subject: [PATCH] Bug 758605: Heap-based buffer overread in xmlDictAddString + + +Reviewed by David Kilzer. + +* HTMLparser.c: +(htmlParseName): Add bounds check. +(htmlParseNameComplex): Ditto. +* result/HTML/758605.html: Added. +* result/HTML/758605.html.err: Added. +* result/HTML/758605.html.sax: Added. +* runtest.c: +(pushParseTest): The input for the new test case was so small +(4 bytes) that htmlParseChunk() was never called after +htmlCreatePushParserCtxt(), thereby creating a false positive +test failure. Fixed by using a do-while loop so we always call +htmlParseChunk() at least once. +* test/HTML/758605.html: Added. + +Upstream-Status: Backport +CVE: CVE-2016-1839 + +Signed-off-by: Armin Kuster +--- + HTMLparser.c | 8 ++++++++ + result/HTML/758605.html | 3 +++ + result/HTML/758605.html.err | 3 +++ + result/HTML/758605.html.sax | 13 +++++++++++++ + runtest.c | 4 ++-- + test/HTML/758605.html | 1 + + 6 files changed, 30 insertions(+), 2 deletions(-) + create mode 100644 result/HTML/758605.html + create mode 100644 result/HTML/758605.html.err + create mode 100644 result/HTML/758605.html.sax + create mode 100644 test/HTML/758605.html + +Index: libxml2-2.9.2/HTMLparser.c +=================================================================== +--- libxml2-2.9.2.orig/HTMLparser.c ++++ libxml2-2.9.2/HTMLparser.c +@@ -2471,6 +2471,10 @@ htmlParseName(htmlParserCtxtPtr ctxt) { + (*in == '_') || (*in == '-') || + (*in == ':') || (*in == '.')) + in++; ++ ++ if (in == ctxt->input->end) ++ return(NULL); ++ + if ((*in > 0) && (*in < 0x80)) { + count = in - ctxt->input->cur; + ret = xmlDictLookup(ctxt->dict, ctxt->input->cur, count); +@@ -2514,6 +2518,10 @@ htmlParseNameComplex(xmlParserCtxtPtr ct + NEXTL(l); + c = CUR_CHAR(l); + } ++ ++ if (ctxt->input->base > ctxt->input->cur - len) ++ return(NULL); ++ + return(xmlDictLookup(ctxt->dict, ctxt->input->cur - len, len)); + } + +Index: libxml2-2.9.2/result/HTML/758605.html +=================================================================== +--- /dev/null ++++ libxml2-2.9.2/result/HTML/758605.html +@@ -0,0 +1,3 @@ ++ ++

& ++

+Index: libxml2-2.9.2/result/HTML/758605.html.err +=================================================================== +--- /dev/null ++++ libxml2-2.9.2/result/HTML/758605.html.err +@@ -0,0 +1,3 @@ ++./test/HTML/758605.html:1: HTML parser error : htmlParseEntityRef: no name ++ĂŞ ++ ^ +Index: libxml2-2.9.2/result/HTML/758605.html.sax +=================================================================== +--- /dev/null ++++ libxml2-2.9.2/result/HTML/758605.html.sax +@@ -0,0 +1,13 @@ ++SAX.setDocumentLocator() ++SAX.startDocument() ++SAX.error: htmlParseEntityRef: no name ++SAX.startElement(html) ++SAX.startElement(body) ++SAX.startElement(p) ++SAX.characters(&, 1) ++SAX.ignorableWhitespace( ++, 1) ++SAX.endElement(p) ++SAX.endElement(body) ++SAX.endElement(html) ++SAX.endDocument() +Index: libxml2-2.9.2/runtest.c +=================================================================== +--- libxml2-2.9.2.orig/runtest.c ++++ libxml2-2.9.2/runtest.c +@@ -1827,7 +1827,7 @@ pushParseTest(const char *filename, cons + ctxt = xmlCreatePushParserCtxt(NULL, NULL, base + cur, 4, filename); + xmlCtxtUseOptions(ctxt, options); + cur += 4; +- while (cur < size) { ++ do { + if (cur + 1024 >= size) { + #ifdef LIBXML_HTML_ENABLED + if (options & XML_PARSE_HTML) +@@ -1845,7 +1845,7 @@ pushParseTest(const char *filename, cons + xmlParseChunk(ctxt, base + cur, 1024, 0); + cur += 1024; + } +- } ++ } while (cur < size); + doc = ctxt->myDoc; + #ifdef LIBXML_HTML_ENABLED + if (options & XML_PARSE_HTML) +Index: libxml2-2.9.2/test/HTML/758605.html +=================================================================== +--- /dev/null ++++ libxml2-2.9.2/test/HTML/758605.html +@@ -0,0 +1 @@ ++&:ę diff --git a/meta/recipes-core/libxml/libxml2_2.9.2.bb b/meta/recipes-core/libxml/libxml2_2.9.2.bb index a7c290434b..328e2a3dbd 100644 --- a/meta/recipes-core/libxml/libxml2_2.9.2.bb +++ b/meta/recipes-core/libxml/libxml2_2.9.2.bb @@ -10,6 +10,7 @@ SRC_URI += "file://CVE-2016-1762.patch \ file://CVE-2016-4483.patch \ file://CVE-2016-1840.patch \ file://CVE-2016-1838.patch \ + file://CVE-2016-1839.patch \ " SRC_URI[libtar.md5sum] = "9e6a9aca9d155737868b3dc5fd82f788" -- cgit v1.2.3