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libxml2: CVE-2015-8035

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Fixes DoS when parsing specially crafted XML document
if XZ support is enabled.

References:
https://bugzilla.gnome.org/show_bug.cgi?id=757466

Upstream correction:
https://git.gnome.org/browse/libxml2/commit/?id=
f0709e3ca8f8947f2d91ed34e92e38a4c23eae63

(From OE-Core rev: e40cae30575a227bb0274869f720dffd816d629a)

Signed-off-by: Tudor Florea <tudor.florea@enea.com>
Signed-off-by: Sona Sarmadi <sona.sarmadi@enea.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Sona Sarmadi 2015-12-14 13:24:12 +01:00 committed by Richard Purdie
parent 3beebd9447
commit d4db68ae6b
2 changed files with 36 additions and 0 deletions
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1
meta/recipes-core/libxml/libxml2.inc
View File

@ -24,6 +24,7 @@ SRC_URI = "ftp://xmlsoft.org/libxml2/libxml2-${PV}.tar.gz;name=libtar \
file://libxml2-CVE-2014-3660.patch \
file://0001-CVE-2015-1819-Enforce-the-reader-to-run-in-constant-.patch \
file://CVE-2015-7942.patch \
file://CVE-2015-8035.patch \
"
BINCONFIG = "${bindir}/xml2-config"

35
meta/recipes-core/libxml/libxml2/CVE-2015-8035.patch Normal file
View File

@ -0,0 +1,35 @@
From f0709e3ca8f8947f2d91ed34e92e38a4c23eae63 Mon Sep 17 00:00:00 2001
From: Daniel Veillard <veillard@redhat.com>
Date: Tue, 3 Nov 2015 15:31:25 +0800
Subject: CVE-2015-8035 Fix XZ compression support loop
For https://bugzilla.gnome.org/show_bug.cgi?id=757466
DoS when parsing specially crafted XML document if XZ support
is compiled in (which wasn't the case for 2.9.2 and master since
Nov 2013, fixed in next commit !)
Upstream-Status: Backport
Signed-off-by: Sona Sarmadi <sona.sarmadi@enea.com>
---
xzlib.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/xzlib.c b/xzlib.c
index 0dcb9f4..1fab546 100644
--- a/xzlib.c
+++ b/xzlib.c
@@ -581,6 +581,10 @@ xz_decomp(xz_statep state)
xz_error(state, LZMA_DATA_ERROR, "compressed data error");
return -1;
}
+ if (ret == LZMA_PROG_ERROR) {
+ xz_error(state, LZMA_PROG_ERROR, "compression error");
+ return -1;
+ }
} while (strm->avail_out && ret != LZMA_STREAM_END);
/* update available output and crc check value */
--
cgit v0.11.2