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The htmlParseTryOrFinish function in HTMLparser.c in libxml2 2.9.4 allows attackers to cause a denial of service (buffer over-read) or information disclosure. https://bugzilla.gnome.org/show_bug.cgi?id=775200 (From OE-Core rev: dac867dc63af70ae992c50697d2be95c3e7b58bb) Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com> Signed-off-by: Ross Burton <ross.burton@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
39 lines
1.0 KiB
Diff
39 lines
1.0 KiB
Diff
From b4bee17b158e289e5c4c9045e64e5374ccafe068 Mon Sep 17 00:00:00 2001
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From: Salvatore Bonaccorso <carnil@debian.org>
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Date: Tue, 3 Jul 2018 15:54:03 +0800
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Subject: [PATCH] Out-of-bounds read in htmlParseTryOrFinish (CVE-2017-8872)
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https://bugzilla.gnome.org/show_bug.cgi?id=775200
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Fixes bug 775200.
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Signed-off-by: Salvatore Bonaccorso <carnil@debian.org>
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Upstream-Status: Submitted
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https://bug775200.bugzilla-attachments.gnome.org/attachment.cgi?id=366193
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CVE: CVE-2017-8872
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Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
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---
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parser.c | 6 +++++-
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1 file changed, 5 insertions(+), 1 deletion(-)
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diff --git a/parser.c b/parser.c
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index ca9fde2..fb4c889 100644
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--- a/parser.c
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+++ b/parser.c
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@@ -12464,7 +12464,11 @@ xmlHaltParser(xmlParserCtxtPtr ctxt) {
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}
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ctxt->input->cur = BAD_CAST"";
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ctxt->input->base = ctxt->input->cur;
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- ctxt->input->end = ctxt->input->cur;
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+ ctxt->input->end = ctxt->input->cur;
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+ if (ctxt->input->buf)
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+ xmlBufEmpty (ctxt->input->buf->buffer);
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+ else
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+ ctxt->input->length = 0;
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}
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}
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--
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2.7.4
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