* bug#46631: Python CVE-2021-3177 @ 2021-02-19 3:21 Leo Famulari 2021-02-19 15:35 ` Ludovic Courtès 2021-02-19 23:12 ` Leo Famulari 0 siblings, 2 replies; 7+ messages in thread From: Leo Famulari @ 2021-02-19 3:21 UTC (permalink / raw) To: 46631 Quoting from MITRE: ------ Python 3.x through 3.9.1 has a buffer overflow in PyCArg_repr in _ctypes/callproc.c, which may lead to remote code execution in certain Python applications that accept floating-point numbers as untrusted input, as demonstrated by a 1e300 argument to c_double.from_param. This occurs because sprintf is used unsafely. ------ https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3177 There is not yet an upstream release to fix the issue in the 3.8 series that we distribute. I believe there are patches we can cherry-pick. Can somebody find them? I assume that Python is considered to be "graft-able". Can anyone confirm? The upstream bug report: https://bugs.python.org/issue42938 ^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#46631: Python CVE-2021-3177 2021-02-19 3:21 bug#46631: Python CVE-2021-3177 Leo Famulari @ 2021-02-19 15:35 ` Ludovic Courtès 2021-02-19 23:12 ` Leo Famulari 1 sibling, 0 replies; 7+ messages in thread From: Ludovic Courtès @ 2021-02-19 15:35 UTC (permalink / raw) To: Leo Famulari; +Cc: 46631 Hi, Leo Famulari <leo@famulari.name> skribis: > I assume that Python is considered to be "graft-able". Can anyone > confirm? Yes, I think so. Ludo’. ^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#46631: Python CVE-2021-3177 2021-02-19 3:21 bug#46631: Python CVE-2021-3177 Leo Famulari 2021-02-19 15:35 ` Ludovic Courtès @ 2021-02-19 23:12 ` Leo Famulari 2021-02-19 23:23 ` Leo Famulari 1 sibling, 1 reply; 7+ messages in thread From: Leo Famulari @ 2021-02-19 23:12 UTC (permalink / raw) To: 46631 [-- Attachment #1: Type: text/plain, Size: 298 bytes --] I pushed a fix for Python 3.9 in commit f08c7cb0c75e7d5305c82d6a4af68ddf74fb08b1. But, we use Python 3.8 for everything, and my patch (attached) fails to apply for some reason. It does work when I apply the new bug fix patch "by hand" onto the Guix source code for our current python-3.8 package. [-- Attachment #2: 0001-gnu-Python-Fix-CVE-2021-3177.patch --] [-- Type: text/plain, Size: 10262 bytes --] From 3cc80457d26c725da61307755716db18ff88d28e Mon Sep 17 00:00:00 2001 From: Leo Famulari <leo@famulari.name> Date: Fri, 19 Feb 2021 18:09:57 -0500 Subject: [PATCH] gnu: Python: Fix CVE-2021-3177. * gnu/packages/patches/python-3.8-CVE-2021-3177.patch: New file. * gnu/local.mk (dist_patch_DATA): Add it. * gnu/packages/python.scm (python-3.8)[replacement]: New field. (python-3.8/fixed): New variable. --- gnu/local.mk | 1 + .../patches/python-3.8-CVE-2021-3177.patch | 194 ++++++++++++++++++ gnu/packages/python.scm | 8 + 3 files changed, 203 insertions(+) create mode 100644 gnu/packages/patches/python-3.8-CVE-2021-3177.patch diff --git a/gnu/local.mk b/gnu/local.mk index 5588cda2e1..26dbcb940f 100644 --- a/gnu/local.mk +++ b/gnu/local.mk @@ -1526,6 +1526,7 @@ dist_patch_DATA = \ %D%/packages/patches/python-3-search-paths.patch \ %D%/packages/patches/python-3-fix-tests.patch \ %D%/packages/patches/python-3.8-fix-tests.patch \ + %D%/packages/patches/python-3.8-CVE-2021-3177.patch \ %D%/packages/patches/python-3.9-fix-tests.patch \ %D%/packages/patches/python-3.9-CVE-2021-3177.patch \ %D%/packages/patches/python-CVE-2018-14647.patch \ diff --git a/gnu/packages/patches/python-3.8-CVE-2021-3177.patch b/gnu/packages/patches/python-3.8-CVE-2021-3177.patch new file mode 100644 index 0000000000..01f6b52865 --- /dev/null +++ b/gnu/packages/patches/python-3.8-CVE-2021-3177.patch @@ -0,0 +1,194 @@ +Fix CVE-2021-3177 for Python 3.8: + +https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3177 + +Patch copied from upstream source repository: + +https://github.com/python/cpython/commit/ece5dfd403dac211f8d3c72701fe7ba7b7aa5b5f + +From ece5dfd403dac211f8d3c72701fe7ba7b7aa5b5f Mon Sep 17 00:00:00 2001 +From: "Miss Islington (bot)" + <31488909+miss-islington@users.noreply.github.com> +Date: Mon, 18 Jan 2021 13:28:52 -0800 +Subject: [PATCH] closes bpo-42938: Replace snprintf with Python unicode + formatting in ctypes param reprs. (GH-24248) + +(cherry picked from commit 916610ef90a0d0761f08747f7b0905541f0977c7) + +Co-authored-by: Benjamin Peterson <benjamin@python.org> + +Co-authored-by: Benjamin Peterson <benjamin@python.org> +--- + Lib/ctypes/test/test_parameters.py | 43 ++++++++++++++++ + .../2021-01-18-09-27-31.bpo-42938.4Zn4Mp.rst | 2 + + Modules/_ctypes/callproc.c | 51 +++++++------------ + 3 files changed, 64 insertions(+), 32 deletions(-) + create mode 100644 Misc/NEWS.d/next/Security/2021-01-18-09-27-31.bpo-42938.4Zn4Mp.rst + +diff --git a/Lib/ctypes/test/test_parameters.py b/Lib/ctypes/test/test_parameters.py +index e4c25fd880cef..531894fdec838 100644 +--- a/Lib/ctypes/test/test_parameters.py ++++ b/Lib/ctypes/test/test_parameters.py +@@ -201,6 +201,49 @@ def __dict__(self): + with self.assertRaises(ZeroDivisionError): + WorseStruct().__setstate__({}, b'foo') + ++ def test_parameter_repr(self): ++ from ctypes import ( ++ c_bool, ++ c_char, ++ c_wchar, ++ c_byte, ++ c_ubyte, ++ c_short, ++ c_ushort, ++ c_int, ++ c_uint, ++ c_long, ++ c_ulong, ++ c_longlong, ++ c_ulonglong, ++ c_float, ++ c_double, ++ c_longdouble, ++ c_char_p, ++ c_wchar_p, ++ c_void_p, ++ ) ++ self.assertRegex(repr(c_bool.from_param(True)), r"^<cparam '\?' at 0x[A-Fa-f0-9]+>$") ++ self.assertEqual(repr(c_char.from_param(97)), "<cparam 'c' ('a')>") ++ self.assertRegex(repr(c_wchar.from_param('a')), r"^<cparam 'u' at 0x[A-Fa-f0-9]+>$") ++ self.assertEqual(repr(c_byte.from_param(98)), "<cparam 'b' (98)>") ++ self.assertEqual(repr(c_ubyte.from_param(98)), "<cparam 'B' (98)>") ++ self.assertEqual(repr(c_short.from_param(511)), "<cparam 'h' (511)>") ++ self.assertEqual(repr(c_ushort.from_param(511)), "<cparam 'H' (511)>") ++ self.assertRegex(repr(c_int.from_param(20000)), r"^<cparam '[li]' \(20000\)>$") ++ self.assertRegex(repr(c_uint.from_param(20000)), r"^<cparam '[LI]' \(20000\)>$") ++ self.assertRegex(repr(c_long.from_param(20000)), r"^<cparam '[li]' \(20000\)>$") ++ self.assertRegex(repr(c_ulong.from_param(20000)), r"^<cparam '[LI]' \(20000\)>$") ++ self.assertRegex(repr(c_longlong.from_param(20000)), r"^<cparam '[liq]' \(20000\)>$") ++ self.assertRegex(repr(c_ulonglong.from_param(20000)), r"^<cparam '[LIQ]' \(20000\)>$") ++ self.assertEqual(repr(c_float.from_param(1.5)), "<cparam 'f' (1.5)>") ++ self.assertEqual(repr(c_double.from_param(1.5)), "<cparam 'd' (1.5)>") ++ self.assertEqual(repr(c_double.from_param(1e300)), "<cparam 'd' (1e+300)>") ++ self.assertRegex(repr(c_longdouble.from_param(1.5)), r"^<cparam ('d' \(1.5\)|'g' at 0x[A-Fa-f0-9]+)>$") ++ self.assertRegex(repr(c_char_p.from_param(b'hihi')), "^<cparam 'z' \(0x[A-Fa-f0-9]+\)>$") ++ self.assertRegex(repr(c_wchar_p.from_param('hihi')), "^<cparam 'Z' \(0x[A-Fa-f0-9]+\)>$") ++ self.assertRegex(repr(c_void_p.from_param(0x12)), r"^<cparam 'P' \(0x0*12\)>$") ++ + ################################################################ + + if __name__ == '__main__': +#diff --git a/Misc/NEWS.d/next/Security/2021-01-18-09-27-31.bpo-42938.4Zn4Mp.rst b/Misc/NEWS.d/next/Security/2021-01-18-09-27-31.bpo-42938.4Zn4Mp.rst +#new file mode 100644 +#index 0000000000000..7df65a156feab +#--- /dev/null +#+++ b/Misc/NEWS.d/next/Security/2021-01-18-09-27-31.bpo-42938.4Zn4Mp.rst +#@@ -0,0 +1,2 @@ +#+Avoid static buffers when computing the repr of :class:`ctypes.c_double` and +#+:class:`ctypes.c_longdouble` values. +diff --git a/Modules/_ctypes/callproc.c b/Modules/_ctypes/callproc.c +index a9b8675cd951b..de75918d49f37 100644 +--- a/Modules/_ctypes/callproc.c ++++ b/Modules/_ctypes/callproc.c +@@ -484,58 +484,47 @@ is_literal_char(unsigned char c) + static PyObject * + PyCArg_repr(PyCArgObject *self) + { +- char buffer[256]; + switch(self->tag) { + case 'b': + case 'B': +- sprintf(buffer, "<cparam '%c' (%d)>", ++ return PyUnicode_FromFormat("<cparam '%c' (%d)>", + self->tag, self->value.b); +- break; + case 'h': + case 'H': +- sprintf(buffer, "<cparam '%c' (%d)>", ++ return PyUnicode_FromFormat("<cparam '%c' (%d)>", + self->tag, self->value.h); +- break; + case 'i': + case 'I': +- sprintf(buffer, "<cparam '%c' (%d)>", ++ return PyUnicode_FromFormat("<cparam '%c' (%d)>", + self->tag, self->value.i); +- break; + case 'l': + case 'L': +- sprintf(buffer, "<cparam '%c' (%ld)>", ++ return PyUnicode_FromFormat("<cparam '%c' (%ld)>", + self->tag, self->value.l); +- break; + + case 'q': + case 'Q': +- sprintf(buffer, +-#ifdef MS_WIN32 +- "<cparam '%c' (%I64d)>", +-#else +- "<cparam '%c' (%lld)>", +-#endif ++ return PyUnicode_FromFormat("<cparam '%c' (%lld)>", + self->tag, self->value.q); +- break; + case 'd': +- sprintf(buffer, "<cparam '%c' (%f)>", +- self->tag, self->value.d); +- break; +- case 'f': +- sprintf(buffer, "<cparam '%c' (%f)>", +- self->tag, self->value.f); +- break; +- ++ case 'f': { ++ PyObject *f = PyFloat_FromDouble((self->tag == 'f') ? self->value.f : self->value.d); ++ if (f == NULL) { ++ return NULL; ++ } ++ PyObject *result = PyUnicode_FromFormat("<cparam '%c' (%R)>", self->tag, f); ++ Py_DECREF(f); ++ return result; ++ } + case 'c': + if (is_literal_char((unsigned char)self->value.c)) { +- sprintf(buffer, "<cparam '%c' ('%c')>", ++ return PyUnicode_FromFormat("<cparam '%c' ('%c')>", + self->tag, self->value.c); + } + else { +- sprintf(buffer, "<cparam '%c' ('\\x%02x')>", ++ return PyUnicode_FromFormat("<cparam '%c' ('\\x%02x')>", + self->tag, (unsigned char)self->value.c); + } +- break; + + /* Hm, are these 'z' and 'Z' codes useful at all? + Shouldn't they be replaced by the functionality of c_string +@@ -544,22 +533,20 @@ PyCArg_repr(PyCArgObject *self) + case 'z': + case 'Z': + case 'P': +- sprintf(buffer, "<cparam '%c' (%p)>", ++ return PyUnicode_FromFormat("<cparam '%c' (%p)>", + self->tag, self->value.p); + break; + + default: + if (is_literal_char((unsigned char)self->tag)) { +- sprintf(buffer, "<cparam '%c' at %p>", ++ return PyUnicode_FromFormat("<cparam '%c' at %p>", + (unsigned char)self->tag, (void *)self); + } + else { +- sprintf(buffer, "<cparam 0x%02x at %p>", ++ return PyUnicode_FromFormat("<cparam 0x%02x at %p>", + (unsigned char)self->tag, (void *)self); + } +- break; + } +- return PyUnicode_FromString(buffer); + } + + static PyMemberDef PyCArgType_members[] = { diff --git a/gnu/packages/python.scm b/gnu/packages/python.scm index 730c371fda..bcf1bfd706 100644 --- a/gnu/packages/python.scm +++ b/gnu/packages/python.scm @@ -364,6 +364,7 @@ data types.") (define-public python-3.8 (package (inherit python-2) (name "python") + (replacement python-3.8/fixed) (version "3.8.2") (source (origin (method url-fetch) @@ -521,6 +522,13 @@ data types.") (version-major+minor version) "/site-packages")))))))) +(define-public python-3.8/fixed + (package/inherit python-3.8 + (source (origin + (inherit (package-source python-3.8)) + (patches (append (search-patches "python-3.8-CVE-2021-3177.patch") + (origin-patches (package-source python-3.8)))))))) + (define-public python-3.9 (package (inherit python-3.8) (name "python-next") -- 2.30.1 ^ permalink raw reply related [flat|nested] 7+ messages in thread
* bug#46631: Python CVE-2021-3177 2021-02-19 23:12 ` Leo Famulari @ 2021-02-19 23:23 ` Leo Famulari 2021-02-19 23:41 ` Leo Famulari 0 siblings, 1 reply; 7+ messages in thread From: Leo Famulari @ 2021-02-19 23:23 UTC (permalink / raw) To: 46631 On Fri, Feb 19, 2021 at 06:12:58PM -0500, Leo Famulari wrote: > But, we use Python 3.8 for everything, and my patch (attached) fails to > apply for some reason. It does work when I apply the new bug fix patch > "by hand" onto the Guix source code for our current python-3.8 package. More weirdness: When I apply the patch to the python-3.8 package (that is, without setting up a grafted replacement), it works. So I am definitely doing something wrong here. ^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#46631: Python CVE-2021-3177 2021-02-19 23:23 ` Leo Famulari @ 2021-02-19 23:41 ` Leo Famulari 2021-02-22 8:08 ` Ludovic Courtès 0 siblings, 1 reply; 7+ messages in thread From: Leo Famulari @ 2021-02-19 23:41 UTC (permalink / raw) To: 46631 [-- Attachment #1.1: Type: text/plain, Size: 374 bytes --] On Fri, Feb 19, 2021 at 06:23:49PM -0500, Leo Famulari wrote: > More weirdness: When I apply the patch to the python-3.8 package (that > is, without setting up a grafted replacement), it works. So I am > definitely doing something wrong here. Here is a new patch that I'm currently building. I think I had composed the package inheritance incorrectly in my previous patch. [-- Attachment #1.2: 0001-gnu-Python-Fix-CVE-2021-3177.patch --] [-- Type: text/plain, Size: 10650 bytes --] From b62969d52add462fc1b8b4bd1e0a3c4d53a39864 Mon Sep 17 00:00:00 2001 From: Leo Famulari <leo@famulari.name> Date: Fri, 19 Feb 2021 18:09:57 -0500 Subject: [PATCH] gnu: Python: Fix CVE-2021-3177. * gnu/packages/patches/python-3.8-CVE-2021-3177.patch: New file. * gnu/local.mk (dist_patch_DATA): Add it. * gnu/packages/python.scm (python-3.8): Define with PACKAGE/INHERIT. [replacement]: New field. (python-3.8/fixed): New variable. --- gnu/local.mk | 1 + .../patches/python-3.8-CVE-2021-3177.patch | 194 ++++++++++++++++++ gnu/packages/python.scm | 11 +- 3 files changed, 205 insertions(+), 1 deletion(-) create mode 100644 gnu/packages/patches/python-3.8-CVE-2021-3177.patch diff --git a/gnu/local.mk b/gnu/local.mk index 5588cda2e1..26dbcb940f 100644 --- a/gnu/local.mk +++ b/gnu/local.mk @@ -1526,6 +1526,7 @@ dist_patch_DATA = \ %D%/packages/patches/python-3-search-paths.patch \ %D%/packages/patches/python-3-fix-tests.patch \ %D%/packages/patches/python-3.8-fix-tests.patch \ + %D%/packages/patches/python-3.8-CVE-2021-3177.patch \ %D%/packages/patches/python-3.9-fix-tests.patch \ %D%/packages/patches/python-3.9-CVE-2021-3177.patch \ %D%/packages/patches/python-CVE-2018-14647.patch \ diff --git a/gnu/packages/patches/python-3.8-CVE-2021-3177.patch b/gnu/packages/patches/python-3.8-CVE-2021-3177.patch new file mode 100644 index 0000000000..01f6b52865 --- /dev/null +++ b/gnu/packages/patches/python-3.8-CVE-2021-3177.patch @@ -0,0 +1,194 @@ +Fix CVE-2021-3177 for Python 3.8: + +https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3177 + +Patch copied from upstream source repository: + +https://github.com/python/cpython/commit/ece5dfd403dac211f8d3c72701fe7ba7b7aa5b5f + +From ece5dfd403dac211f8d3c72701fe7ba7b7aa5b5f Mon Sep 17 00:00:00 2001 +From: "Miss Islington (bot)" + <31488909+miss-islington@users.noreply.github.com> +Date: Mon, 18 Jan 2021 13:28:52 -0800 +Subject: [PATCH] closes bpo-42938: Replace snprintf with Python unicode + formatting in ctypes param reprs. (GH-24248) + +(cherry picked from commit 916610ef90a0d0761f08747f7b0905541f0977c7) + +Co-authored-by: Benjamin Peterson <benjamin@python.org> + +Co-authored-by: Benjamin Peterson <benjamin@python.org> +--- + Lib/ctypes/test/test_parameters.py | 43 ++++++++++++++++ + .../2021-01-18-09-27-31.bpo-42938.4Zn4Mp.rst | 2 + + Modules/_ctypes/callproc.c | 51 +++++++------------ + 3 files changed, 64 insertions(+), 32 deletions(-) + create mode 100644 Misc/NEWS.d/next/Security/2021-01-18-09-27-31.bpo-42938.4Zn4Mp.rst + +diff --git a/Lib/ctypes/test/test_parameters.py b/Lib/ctypes/test/test_parameters.py +index e4c25fd880cef..531894fdec838 100644 +--- a/Lib/ctypes/test/test_parameters.py ++++ b/Lib/ctypes/test/test_parameters.py +@@ -201,6 +201,49 @@ def __dict__(self): + with self.assertRaises(ZeroDivisionError): + WorseStruct().__setstate__({}, b'foo') + ++ def test_parameter_repr(self): ++ from ctypes import ( ++ c_bool, ++ c_char, ++ c_wchar, ++ c_byte, ++ c_ubyte, ++ c_short, ++ c_ushort, ++ c_int, ++ c_uint, ++ c_long, ++ c_ulong, ++ c_longlong, ++ c_ulonglong, ++ c_float, ++ c_double, ++ c_longdouble, ++ c_char_p, ++ c_wchar_p, ++ c_void_p, ++ ) ++ self.assertRegex(repr(c_bool.from_param(True)), r"^<cparam '\?' at 0x[A-Fa-f0-9]+>$") ++ self.assertEqual(repr(c_char.from_param(97)), "<cparam 'c' ('a')>") ++ self.assertRegex(repr(c_wchar.from_param('a')), r"^<cparam 'u' at 0x[A-Fa-f0-9]+>$") ++ self.assertEqual(repr(c_byte.from_param(98)), "<cparam 'b' (98)>") ++ self.assertEqual(repr(c_ubyte.from_param(98)), "<cparam 'B' (98)>") ++ self.assertEqual(repr(c_short.from_param(511)), "<cparam 'h' (511)>") ++ self.assertEqual(repr(c_ushort.from_param(511)), "<cparam 'H' (511)>") ++ self.assertRegex(repr(c_int.from_param(20000)), r"^<cparam '[li]' \(20000\)>$") ++ self.assertRegex(repr(c_uint.from_param(20000)), r"^<cparam '[LI]' \(20000\)>$") ++ self.assertRegex(repr(c_long.from_param(20000)), r"^<cparam '[li]' \(20000\)>$") ++ self.assertRegex(repr(c_ulong.from_param(20000)), r"^<cparam '[LI]' \(20000\)>$") ++ self.assertRegex(repr(c_longlong.from_param(20000)), r"^<cparam '[liq]' \(20000\)>$") ++ self.assertRegex(repr(c_ulonglong.from_param(20000)), r"^<cparam '[LIQ]' \(20000\)>$") ++ self.assertEqual(repr(c_float.from_param(1.5)), "<cparam 'f' (1.5)>") ++ self.assertEqual(repr(c_double.from_param(1.5)), "<cparam 'd' (1.5)>") ++ self.assertEqual(repr(c_double.from_param(1e300)), "<cparam 'd' (1e+300)>") ++ self.assertRegex(repr(c_longdouble.from_param(1.5)), r"^<cparam ('d' \(1.5\)|'g' at 0x[A-Fa-f0-9]+)>$") ++ self.assertRegex(repr(c_char_p.from_param(b'hihi')), "^<cparam 'z' \(0x[A-Fa-f0-9]+\)>$") ++ self.assertRegex(repr(c_wchar_p.from_param('hihi')), "^<cparam 'Z' \(0x[A-Fa-f0-9]+\)>$") ++ self.assertRegex(repr(c_void_p.from_param(0x12)), r"^<cparam 'P' \(0x0*12\)>$") ++ + ################################################################ + + if __name__ == '__main__': +#diff --git a/Misc/NEWS.d/next/Security/2021-01-18-09-27-31.bpo-42938.4Zn4Mp.rst b/Misc/NEWS.d/next/Security/2021-01-18-09-27-31.bpo-42938.4Zn4Mp.rst +#new file mode 100644 +#index 0000000000000..7df65a156feab +#--- /dev/null +#+++ b/Misc/NEWS.d/next/Security/2021-01-18-09-27-31.bpo-42938.4Zn4Mp.rst +#@@ -0,0 +1,2 @@ +#+Avoid static buffers when computing the repr of :class:`ctypes.c_double` and +#+:class:`ctypes.c_longdouble` values. +diff --git a/Modules/_ctypes/callproc.c b/Modules/_ctypes/callproc.c +index a9b8675cd951b..de75918d49f37 100644 +--- a/Modules/_ctypes/callproc.c ++++ b/Modules/_ctypes/callproc.c +@@ -484,58 +484,47 @@ is_literal_char(unsigned char c) + static PyObject * + PyCArg_repr(PyCArgObject *self) + { +- char buffer[256]; + switch(self->tag) { + case 'b': + case 'B': +- sprintf(buffer, "<cparam '%c' (%d)>", ++ return PyUnicode_FromFormat("<cparam '%c' (%d)>", + self->tag, self->value.b); +- break; + case 'h': + case 'H': +- sprintf(buffer, "<cparam '%c' (%d)>", ++ return PyUnicode_FromFormat("<cparam '%c' (%d)>", + self->tag, self->value.h); +- break; + case 'i': + case 'I': +- sprintf(buffer, "<cparam '%c' (%d)>", ++ return PyUnicode_FromFormat("<cparam '%c' (%d)>", + self->tag, self->value.i); +- break; + case 'l': + case 'L': +- sprintf(buffer, "<cparam '%c' (%ld)>", ++ return PyUnicode_FromFormat("<cparam '%c' (%ld)>", + self->tag, self->value.l); +- break; + + case 'q': + case 'Q': +- sprintf(buffer, +-#ifdef MS_WIN32 +- "<cparam '%c' (%I64d)>", +-#else +- "<cparam '%c' (%lld)>", +-#endif ++ return PyUnicode_FromFormat("<cparam '%c' (%lld)>", + self->tag, self->value.q); +- break; + case 'd': +- sprintf(buffer, "<cparam '%c' (%f)>", +- self->tag, self->value.d); +- break; +- case 'f': +- sprintf(buffer, "<cparam '%c' (%f)>", +- self->tag, self->value.f); +- break; +- ++ case 'f': { ++ PyObject *f = PyFloat_FromDouble((self->tag == 'f') ? self->value.f : self->value.d); ++ if (f == NULL) { ++ return NULL; ++ } ++ PyObject *result = PyUnicode_FromFormat("<cparam '%c' (%R)>", self->tag, f); ++ Py_DECREF(f); ++ return result; ++ } + case 'c': + if (is_literal_char((unsigned char)self->value.c)) { +- sprintf(buffer, "<cparam '%c' ('%c')>", ++ return PyUnicode_FromFormat("<cparam '%c' ('%c')>", + self->tag, self->value.c); + } + else { +- sprintf(buffer, "<cparam '%c' ('\\x%02x')>", ++ return PyUnicode_FromFormat("<cparam '%c' ('\\x%02x')>", + self->tag, (unsigned char)self->value.c); + } +- break; + + /* Hm, are these 'z' and 'Z' codes useful at all? + Shouldn't they be replaced by the functionality of c_string +@@ -544,22 +533,20 @@ PyCArg_repr(PyCArgObject *self) + case 'z': + case 'Z': + case 'P': +- sprintf(buffer, "<cparam '%c' (%p)>", ++ return PyUnicode_FromFormat("<cparam '%c' (%p)>", + self->tag, self->value.p); + break; + + default: + if (is_literal_char((unsigned char)self->tag)) { +- sprintf(buffer, "<cparam '%c' at %p>", ++ return PyUnicode_FromFormat("<cparam '%c' at %p>", + (unsigned char)self->tag, (void *)self); + } + else { +- sprintf(buffer, "<cparam 0x%02x at %p>", ++ return PyUnicode_FromFormat("<cparam 0x%02x at %p>", + (unsigned char)self->tag, (void *)self); + } +- break; + } +- return PyUnicode_FromString(buffer); + } + + static PyMemberDef PyCArgType_members[] = { diff --git a/gnu/packages/python.scm b/gnu/packages/python.scm index 730c371fda..fc28d0e3f8 100644 --- a/gnu/packages/python.scm +++ b/gnu/packages/python.scm @@ -362,8 +362,9 @@ data types.") (properties `((superseded . ,python-2))))) (define-public python-3.8 - (package (inherit python-2) + (package/inherit python-2 (name "python") + (replacement python-3.8/fixed) (version "3.8.2") (source (origin (method url-fetch) @@ -521,6 +522,14 @@ data types.") (version-major+minor version) "/site-packages")))))))) +(define python-3.8/fixed + (package + (inherit python-3.8) + (source (origin + (inherit (package-source python-3.8)) + (patches (append (search-patches "python-3.8-CVE-2021-3177.patch") + (origin-patches (package-source python-3.8)))))))) + (define-public python-3.9 (package (inherit python-3.8) (name "python-next") -- 2.30.1 [-- Attachment #2: signature.asc --] [-- Type: application/pgp-signature, Size: 833 bytes --] ^ permalink raw reply related [flat|nested] 7+ messages in thread
* bug#46631: Python CVE-2021-3177 2021-02-19 23:41 ` Leo Famulari @ 2021-02-22 8:08 ` Ludovic Courtès 2021-02-23 19:16 ` Leo Famulari 0 siblings, 1 reply; 7+ messages in thread From: Ludovic Courtès @ 2021-02-22 8:08 UTC (permalink / raw) To: Leo Famulari; +Cc: 46631 Hi Leo, Leo Famulari <leo@famulari.name> skribis: > From b62969d52add462fc1b8b4bd1e0a3c4d53a39864 Mon Sep 17 00:00:00 2001 > From: Leo Famulari <leo@famulari.name> > Date: Fri, 19 Feb 2021 18:09:57 -0500 > Subject: [PATCH] gnu: Python: Fix CVE-2021-3177. > > * gnu/packages/patches/python-3.8-CVE-2021-3177.patch: New file. > * gnu/local.mk (dist_patch_DATA): Add it. > * gnu/packages/python.scm (python-3.8): Define with PACKAGE/INHERIT. > [replacement]: New field. > (python-3.8/fixed): New variable. [...] > (define-public python-3.8 > - (package (inherit python-2) > + (package/inherit python-2 > (name "python") > + (replacement python-3.8/fixed) You can keep (inherit …) because the effect of ‘package/inherit’ is just to preserve replacements, which is unnecessary here. Apart from that, the Guix side of things LGTM. Thanks for working on it! Ludo’. ^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#46631: Python CVE-2021-3177 2021-02-22 8:08 ` Ludovic Courtès @ 2021-02-23 19:16 ` Leo Famulari 0 siblings, 0 replies; 7+ messages in thread From: Leo Famulari @ 2021-02-23 19:16 UTC (permalink / raw) To: Ludovic Courtès; +Cc: 46631-done On Mon, Feb 22, 2021 at 09:08:14AM +0100, Ludovic Courtès wrote: > You can keep (inherit …) because the effect of ‘package/inherit’ is just > to preserve replacements, which is unnecessary here. I used to know that... it's been a while and I forgot, and had trouble understanding the package/inherit docstring. So I pushed a commit that I hope clarifies it. > Apart from that, the Guix side of things LGTM. Pushed as 84e082e31706411e7f9c3189a83f8ed0b4016fe7 > Thanks for working on it! Thanks for the review! ^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2021-02-23 19:18 UTC | newest] Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2021-02-19 3:21 bug#46631: Python CVE-2021-3177 Leo Famulari 2021-02-19 15:35 ` Ludovic Courtès 2021-02-19 23:12 ` Leo Famulari 2021-02-19 23:23 ` Leo Famulari 2021-02-19 23:41 ` Leo Famulari 2021-02-22 8:08 ` Ludovic Courtès 2021-02-23 19:16 ` Leo Famulari
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