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-rw-r--r--system/bison/APKBUILD14
-rw-r--r--system/bison/uaf.patch160
2 files changed, 170 insertions, 4 deletions
diff --git a/system/bison/APKBUILD b/system/bison/APKBUILD
index c0a5ed0c2..c8e2b9710 100644
--- a/system/bison/APKBUILD
+++ b/system/bison/APKBUILD
@@ -1,11 +1,14 @@
# Contributor: Łukasz Jendrysik <scadu@yandex.com>
# Maintainer: A. Wilcox <awilfox@adelielinux.org>
pkgname=bison
-pkgver=3.5.4
+pkgver=3.7
pkgrel=0
pkgdesc="The GNU general-purpose parser generator"
arch="all"
-[ -n "$BOOTSTRAP" ] && options="!check"
+# iconv issue:
+# https://lists.gnu.org/archive/html/bug-bison/2020-07/msg00001.html
+# https://www.openwall.com/lists/musl/2020/07/29/2
+options="!check" # see above
license="GPL-3.0+"
url="https://www.gnu.org/software/bison/bison.html"
depends="m4"
@@ -13,7 +16,9 @@ checkdepends="bison flex musl-locales"
makedepends="perl"
provider_priority=1
subpackages="$pkgname-doc $pkgname-lang"
-source="https://ftp.gnu.org/gnu/bison/${pkgname}-${pkgver}.tar.xz"
+source="https://ftp.gnu.org/gnu/bison/${pkgname}-${pkgver}.tar.xz
+ uaf.patch
+ "
# secfixes:
# 3.5.4-r0:
@@ -44,4 +49,5 @@ package() {
rmdir -p "$pkgdir"/usr/lib 2>/dev/null || true
}
-sha512sums="92f59122dc4d5cae1debdd5567253f269ef001c98582a5763a2051424fecb78e8710c80a09fc488f6784705e679a8bc82874bc11cc03e4eb83445cb9f418b331 bison-3.5.4.tar.xz"
+sha512sums="f6c8f1522849b65046844bd51953b4f1e2c32818d8bca0b8e4a1035e72d6731d8a66bc307d4b20d1a576cac6cbe10aa1c66829112327f37938ace165e154ba6a bison-3.7.tar.xz
+4a4e22589cd02fb301fdff98078a551f97967dd7add935341f47d0df3acd95827661633ff6489d1ae36730eed8ddec1c2a8ded054628abb839feda79feae4be0 uaf.patch"
diff --git a/system/bison/uaf.patch b/system/bison/uaf.patch
new file mode 100644
index 000000000..19ab59c56
--- /dev/null
+++ b/system/bison/uaf.patch
@@ -0,0 +1,160 @@
+From be95a4fe2951374676efc9454ffee8638faaf68d Mon Sep 17 00:00:00 2001
+From: Akim Demaille <akim.demaille@gmail.com>
+Date: Tue, 28 Jul 2020 18:51:30 +0200
+Subject: scanner: don't crash on strings containing a NUL byte
+
+We crash if the input contains a string containing a NUL byte.
+Reported by Suhwan Song.
+https://lists.gnu.org/r/bug-bison/2020-07/msg00051.html
+
+* src/flex-scanner.h (STRING_FREE): Avoid accidental use of
+last_string.
+* src/scan-gram.l: Don't call STRING_FREE without calling
+STRING_FINISH first.
+* tests/input.at (Invalid inputs): Check that case.
+---
+ THANKS | 1 +
+ src/flex-scanner.h | 10 +++++++++-
+ src/scan-gram.l | 3 ++-
+ tests/input.at | 48 ++++++++++++++++++++++++++++++++++++++----------
+ 4 files changed, 50 insertions(+), 12 deletions(-)
+
+diff --git a/THANKS b/THANKS
+index ac073ea6..5c64da3c 100644
+--- a/THANKS
++++ b/THANKS
+@@ -185,6 +185,7 @@ Simon Sobisch simonsobisch@web.de
+ Stefano Lattarini stefano.lattarini@gmail.com
+ Stephen Cameron stephenmcameron@gmail.com
+ Steve Murphy murf@parsetree.com
++Suhwan Song prada960808@gmail.com
+ Sum Wu sum@geekhouse.org
+ Théophile Ranquet theophile.ranquet@gmail.com
+ Thiru Ramakrishnan thiru.ramakrishnan@gmail.com
+diff --git a/src/flex-scanner.h b/src/flex-scanner.h
+index 56ca7ce3..028847fd 100644
+--- a/src/flex-scanner.h
++++ b/src/flex-scanner.h
+@@ -112,7 +112,15 @@ static struct obstack obstack_for_string;
+ # define STRING_1GROW(Char) \
+ obstack_1grow (&obstack_for_string, Char)
+
+-# define STRING_FREE() \
++# ifdef NDEBUG
++# define STRING_FREE() \
+ obstack_free (&obstack_for_string, last_string)
++# else
++# define STRING_FREE() \
++ do { \
++ obstack_free (&obstack_for_string, last_string); \
++ last_string = NULL; \
++ } while (0)
++#endif
+
+ #endif
+diff --git a/src/scan-gram.l b/src/scan-gram.l
+index f8d85f23..ad2904ce 100644
+--- a/src/scan-gram.l
++++ b/src/scan-gram.l
+@@ -403,6 +403,7 @@ eqopt ({sp}=)?
+ {
+ \0 {
+ complain (loc, complaint, _("invalid null character"));
++ STRING_FINISH ();
+ STRING_FREE ();
+ return GRAM_error;
+ }
+@@ -599,7 +600,6 @@ eqopt ({sp}=)?
+ STRING_FINISH ();
+ BEGIN INITIAL;
+ loc->start = token_start;
+- val->CHAR = last_string[0];
+
+ if (last_string[0] == '\0')
+ {
+@@ -615,6 +615,7 @@ eqopt ({sp}=)?
+ }
+ else
+ {
++ val->CHAR = last_string[0];
+ STRING_FREE ();
+ return CHAR;
+ }
+diff --git a/tests/input.at b/tests/input.at
+index 4da63795..effcd1cc 100644
+--- a/tests/input.at
++++ b/tests/input.at
+@@ -1,4 +1,4 @@
+-# Checking the Bison scanner. -*- Autotest -*-
++# Checking the Bison reader. -*- Autotest -*-
+
+ # Copyright (C) 2002-2015, 2018-2020 Free Software Foundation, Inc.
+
+@@ -78,10 +78,13 @@ AT_CLEANUP
+ ## Invalid inputs. ##
+ ## ---------------- ##
+
++# The truly bad guys no human would write, but easily uncovered by
++# fuzzers.
+ AT_SETUP([Invalid inputs])
+
+ AT_DATA([input.y],
+ [[\000\001\002\377?
++"\000"
+ %%
+ ?
+ default: 'a' }
+@@ -92,16 +95,41 @@ default: 'a' }
+ ]])
+ AT_PERL_REQUIRE([[-pi -e 's/\\(\d{3})/chr(oct($1))/ge' input.y]])
+
+-AT_BISON_CHECK([input.y], [1], [],
++AT_BISON_CHECK([-fcaret input.y], [1], [], [stderr])
++
++# Autotest's diffing, when there are NUL bytes, just reports "binary
++# files differ". So don't leave NUL bytes.
++AT_PERL_CHECK([[-p -e 's{([\0\377])}{sprintf "\\x%02x", ord($1)}ge' stderr]], [],
+ [[input.y:1.1-2: error: invalid characters: '\0\001\002\377?'
+-input.y:3.1: error: invalid character: '?'
+-input.y:4.14: error: invalid character: '}'
+-input.y:5.1: error: invalid character: '%'
+-input.y:5.2: error: invalid character: '&'
+-input.y:6.1-17: error: invalid directive: '%a-does-not-exist'
+-input.y:7.1: error: invalid character: '%'
+-input.y:7.2: error: invalid character: '-'
+-input.y:8.1-9.0: error: missing '%}' at end of file
++ 1 | \x00\xff?
++ | ^~
++input.y:2.2: error: invalid null character
++ 2 | "\x00"
++ | ^
++input.y:4.1: error: invalid character: '?'
++ 4 | ?
++ | ^
++input.y:5.14: error: invalid character: '}'
++ 5 | default: 'a' }
++ | ^
++input.y:6.1: error: invalid character: '%'
++ 6 | %&
++ | ^
++input.y:6.2: error: invalid character: '&'
++ 6 | %&
++ | ^
++input.y:7.1-17: error: invalid directive: '%a-does-not-exist'
++ 7 | %a-does-not-exist
++ | ^~~~~~~~~~~~~~~~~
++input.y:8.1: error: invalid character: '%'
++ 8 | %-
++ | ^
++input.y:8.2: error: invalid character: '-'
++ 8 | %-
++ | ^
++input.y:9.1-10.0: error: missing '%}' at end of file
++ 9 | %{
++ | ^~
+ ]])
+
+ AT_CLEANUP
+--
+cgit v1.2.1
+