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authorAnuj Mittal <anuj.mittal@intel.com>2020-02-21 23:00:31 +0200
committerRichard Purdie <richard.purdie@linuxfoundation.org>2020-03-07 10:56:45 +0000
commiteb3988272b102e950e239db37b06e0fdb11159b0 (patch)
treed190a9523d48d945b0d7440f88aea97f9795326b
parentd37b23160b9177fd77c60d3b67230a372fa4bba8 (diff)
downloadpoky-eb3988272b102e950e239db37b06e0fdb11159b0.tar.gz
libxml2: fix CVE-2020-7595
(From OE-Core rev: f2f7aa9a495774fe5a2e3947584cb3503bd1eaf1) (From OE-Core rev: 72a747f77f9fd051e054e679deacf537b4b7116f) Signed-off-by: Anuj Mittal <anuj.mittal@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Anuj Mittal <anuj.mittal@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
-rw-r--r--meta/recipes-core/libxml/libxml2/CVE-2020-7595.patch36
-rw-r--r--meta/recipes-core/libxml/libxml2_2.9.9.bb1
2 files changed, 37 insertions, 0 deletions
diff --git a/meta/recipes-core/libxml/libxml2/CVE-2020-7595.patch b/meta/recipes-core/libxml/libxml2/CVE-2020-7595.patch
new file mode 100644
index 0000000000..facfefd362
--- /dev/null
+++ b/meta/recipes-core/libxml/libxml2/CVE-2020-7595.patch
@@ -0,0 +1,36 @@
1From 0e1a49c8907645d2e155f0d89d4d9895ac5112b5 Mon Sep 17 00:00:00 2001
2From: Zhipeng Xie <xiezhipeng1@huawei.com>
3Date: Thu, 12 Dec 2019 17:30:55 +0800
4Subject: [PATCH] Fix infinite loop in xmlStringLenDecodeEntities
5
6When ctxt->instate == XML_PARSER_EOF,xmlParseStringEntityRef
7return NULL which cause a infinite loop in xmlStringLenDecodeEntities
8
9Found with libFuzzer.
10
11Signed-off-by: Zhipeng Xie <xiezhipeng1@huawei.com>
12
13Upstream-Status: Backport [https://gitlab.gnome.org/GNOME/libxml2/commit/0e1a49c89076]
14CVE: CVE-2020-7595
15Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>
16---
17 parser.c | 3 ++-
18 1 file changed, 2 insertions(+), 1 deletion(-)
19
20diff --git a/parser.c b/parser.c
21index d1c31963..a34bb6cd 100644
22--- a/parser.c
23+++ b/parser.c
24@@ -2646,7 +2646,8 @@ xmlStringLenDecodeEntities(xmlParserCtxtPtr ctxt, const xmlChar *str, int len,
25 else
26 c = 0;
27 while ((c != 0) && (c != end) && /* non input consuming loop */
28- (c != end2) && (c != end3)) {
29+ (c != end2) && (c != end3) &&
30+ (ctxt->instate != XML_PARSER_EOF)) {
31
32 if (c == 0) break;
33 if ((c == '&') && (str[1] == '#')) {
34--
352.24.1
36
diff --git a/meta/recipes-core/libxml/libxml2_2.9.9.bb b/meta/recipes-core/libxml/libxml2_2.9.9.bb
index c44a90b1c2..5797dd6bee 100644
--- a/meta/recipes-core/libxml/libxml2_2.9.9.bb
+++ b/meta/recipes-core/libxml/libxml2_2.9.9.bb
@@ -21,6 +21,7 @@ SRC_URI = "http://www.xmlsoft.org/sources/libxml2-${PV}.tar.gz;name=libtar \
21 file://0001-Make-ptest-run-the-python-tests-if-python-is-enabled.patch \ 21 file://0001-Make-ptest-run-the-python-tests-if-python-is-enabled.patch \
22 file://fix-execution-of-ptests.patch \ 22 file://fix-execution-of-ptests.patch \
23 file://Fix-CVE-2019-19956.patch \ 23 file://Fix-CVE-2019-19956.patch \
24 file://CVE-2020-7595.patch \
24 " 25 "
25 26
26SRC_URI[libtar.md5sum] = "c04a5a0a042eaa157e8e8c9eabe76bd6" 27SRC_URI[libtar.md5sum] = "c04a5a0a042eaa157e8e8c9eabe76bd6"