[OE-core] [PATCH] python: Fix CVE-2014-1912
Maxin B. John
maxin.john at enea.com
Mon Apr 7 15:48:11 UTC 2014
From: "Maxin B. John" <maxin.john at enea.com>
A remote user can send specially crafted data to trigger a buffer overflow
in socket.recvfrom_into() and execute arbitrary code on the target system.
The code will run with the privileges of the target service.
This back-ported patch fixes CVE-2014-1912
Signed-off-by: Maxin B. John <maxin.john at enea.com>
---
.../python/python/python-2.7.3-CVE-2014-1912.patch | 26 ++++++++++++++++++++
meta/recipes-devtools/python/python_2.7.3.bb | 1 +
2 files changed, 27 insertions(+)
create mode 100644 meta/recipes-devtools/python/python/python-2.7.3-CVE-2014-1912.patch
diff --git a/meta/recipes-devtools/python/python/python-2.7.3-CVE-2014-1912.patch b/meta/recipes-devtools/python/python/python-2.7.3-CVE-2014-1912.patch
new file mode 100644
index 0000000..02cc83d
--- /dev/null
+++ b/meta/recipes-devtools/python/python/python-2.7.3-CVE-2014-1912.patch
@@ -0,0 +1,26 @@
+Upstream-Status: Backport
+
+Reference: http://bugs.python.org/issue20246
+
+CVE-2014-1912: Python buffer overflow in socket.recvfrom_into()
+lets remote users execute arbitrary code.Original patch by Benjamin Peterson
+
+Signed-off-by: Maxin B. John <maxin.john at enea.com>
+---
+diff -r 40fb60df4755 Modules/socketmodule.c
+--- a/Modules/socketmodule.c Sun Jan 12 12:11:47 2014 +0200
++++ b/Modules/socketmodule.c Mon Jan 13 16:36:35 2014 -0800
+@@ -2744,6 +2744,13 @@
+ recvlen = buflen;
+ }
+
++ /* Check if the buffer is large enough */
++ if (buflen < recvlen) {
++ PyErr_SetString(PyExc_ValueError,
++ "buffer too small for requested bytes");
++ goto error;
++ }
++
+ readlen = sock_recvfrom_guts(s, buf.buf, recvlen, flags, &addr);
+ if (readlen < 0) {
+ /* Return an error */
diff --git a/meta/recipes-devtools/python/python_2.7.3.bb b/meta/recipes-devtools/python/python_2.7.3.bb
index c7bb9b4..0d64172 100644
--- a/meta/recipes-devtools/python/python_2.7.3.bb
+++ b/meta/recipes-devtools/python/python_2.7.3.bb
@@ -35,6 +35,7 @@ SRC_URI += "\
file://parallel-makeinst-create-bindir.patch \
file://python-2.7.3-CVE-2013-1752-smtplib-fix.patch \
file://python-fix-build-error-with-Readline-6.3.patch \
+ file://python-2.7.3-CVE-2014-1912.patch \
"
S = "${WORKDIR}/Python-${PV}"
--
1.7.10.4
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