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pcre: 8.39 -> 8.40 + security fix

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CVE-2017-7186

refs nixos/security#57 #24319
This commit is contained in:
Robin Gloster 2017-03-26 16:30:01 +02:00
parent c1a9dc3d37
commit 6b9c81aa18
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GPG Key ID: 5E4C836C632C2882
2 changed files with 56 additions and 2 deletions
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52
pkgs/development/libraries/pcre/CVE-2017-7186.patch Normal file
View File

@ -0,0 +1,52 @@
--- a/pcre_internal.h 2016/05/21 13:34:44 1649
+++ b/pcre_internal.h 2017/02/24 17:30:30 1688
@@ -2772,6 +2772,9 @@
extern const pcre_uint16 PRIV(ucd_stage2)[];
extern const pcre_uint32 PRIV(ucp_gentype)[];
extern const pcre_uint32 PRIV(ucp_gbtable)[];
+#ifdef COMPILE_PCRE32
+extern const ucd_record PRIV(dummy_ucd_record)[];
+#endif
#ifdef SUPPORT_JIT
extern const int PRIV(ucp_typerange)[];
#endif
@@ -2780,9 +2783,15 @@
/* UCD access macros */
#define UCD_BLOCK_SIZE 128
-#define GET_UCD(ch) (PRIV(ucd_records) + \
+#define REAL_GET_UCD(ch) (PRIV(ucd_records) + \
PRIV(ucd_stage2)[PRIV(ucd_stage1)[(int)(ch) / UCD_BLOCK_SIZE] * \
UCD_BLOCK_SIZE + (int)(ch) % UCD_BLOCK_SIZE])
+
+#ifdef COMPILE_PCRE32
+#define GET_UCD(ch) ((ch > 0x10ffff)? PRIV(dummy_ucd_record) : REAL_GET_UCD(ch))
+#else
+#define GET_UCD(ch) REAL_GET_UCD(ch)
+#endif
#define UCD_CHARTYPE(ch) GET_UCD(ch)->chartype
#define UCD_SCRIPT(ch) GET_UCD(ch)->script
--- a/pcre_ucd.c 2014/06/19 07:51:39 1490
+++ b/pcre_ucd.c 2017/02/24 17:30:30 1688
@@ -38,6 +38,20 @@
const pcre_uint32 PRIV(ucd_caseless_sets)[] = {0};
#else
+/* If the 32-bit library is run in non-32-bit mode, character values
+greater than 0x10ffff may be encountered. For these we set up a
+special record. */
+
+#ifdef COMPILE_PCRE32
+const ucd_record PRIV(dummy_ucd_record)[] = {{
+ ucp_Common, /* script */
+ ucp_Cn, /* type unassigned */
+ ucp_gbOther, /* grapheme break property */
+ 0, /* case set */
+ 0, /* other case */
+ }};
+#endif
+
/* When recompiling tables with a new Unicode version, please check the
types in this structure definition from pcre_internal.h (the actual
field names will be different):

6
pkgs/development/libraries/pcre/default.nix
View File

@ -7,7 +7,7 @@ with stdenv.lib;
assert elem variant [ null "cpp" "pcre16" "pcre32" ];
let
version = "8.39";
version = "8.40";
pname = if (variant == null) then "pcre"
else if (variant == "cpp") then "pcre-cpp"
else variant;
@ -17,7 +17,7 @@ in stdenv.mkDerivation rec {
src = fetchurl {
url = "ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-${version}.tar.bz2";
sha256 = "12wyajlqx2v7dsh39ra9v9m5hibjkrl129q90bp32c28haghjn5q";
sha256 = "1x7lpjn7jhk0n3sdvggxrlrhab8kkfjwl7qix0ypw9nlx8lpmqh0";
};
outputs = [ "bin" "dev" "out" "doc" "man" ];
@ -29,6 +29,8 @@ in stdenv.mkDerivation rec {
]
++ optional (variant != null) "--enable-${variant}";
patches = [ ./CVE-2017-7186.patch ];
doCheck = with stdenv; !(isCygwin || isFreeBSD);
# XXX: test failure on Cygwin
# we are running out of stack on both freeBSDs on Hydra