GNU bug report logs -
#26431
[PATCH 0/2] Fix CVE-2017-7186 in pcre and pcre2
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Reported by: Ludovic Courtès <ludo <at> gnu.org>
Date: Mon, 10 Apr 2017 13:41:01 UTC
Severity: normal
Tags: patch
Done: ludo <at> gnu.org (Ludovic Courtès)
Bug is archived. No further changes may be made.
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* gnu/packages/patches/pcre2-CVE-2017-7186.patch: New file.
* gnu/packages/pcre.scm (pcre2)[source]: Use it.
* gnu/local.mk (dist_patch_DATA): Add it.
---
gnu/local.mk | 1 +
gnu/packages/patches/pcre2-CVE-2017-7186.patch | 67 ++++++++++++++++++++++++++
gnu/packages/pcre.scm | 3 +-
3 files changed, 70 insertions(+), 1 deletion(-)
create mode 100644 gnu/packages/patches/pcre2-CVE-2017-7186.patch
diff --git a/gnu/local.mk b/gnu/local.mk
index a8d006601..c3a65789a 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -825,6 +825,7 @@ dist_patch_DATA = \
%D%/packages/patches/patchelf-rework-for-arm.patch \
%D%/packages/patches/patchutils-xfail-gendiff-tests.patch \
%D%/packages/patches/patch-hurd-path-max.patch \
+ %D%/packages/patches/pcre2-CVE-2017-7186.patch \
%D%/packages/patches/perl-autosplit-default-time.patch \
%D%/packages/patches/perl-deterministic-ordering.patch \
%D%/packages/patches/perl-finance-quote-unuse-mozilla-ca.patch \
diff --git a/gnu/packages/patches/pcre2-CVE-2017-7186.patch b/gnu/packages/patches/pcre2-CVE-2017-7186.patch
new file mode 100644
index 000000000..482f07a1f
--- /dev/null
+++ b/gnu/packages/patches/pcre2-CVE-2017-7186.patch
@@ -0,0 +1,67 @@
+Upstream patch for <https://nvd.nist.gov/vuln/detail?vulnId=CVE-2017-7186>.
+
+--- trunk/src/pcre2_internal.h 2016/11/19 12:46:24 600
++++ trunk/src/pcre2_internal.h 2017/02/24 18:25:32 670
+@@ -1774,10 +1774,17 @@
+ /* 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])
+
++#if PCRE2_CODE_UNIT_WIDTH == 32
++#define GET_UCD(ch) ((ch > MAX_UTF_CODE_POINT)? \
++ 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
+ #define UCD_CATEGORY(ch) PRIV(ucp_gentype)[UCD_CHARTYPE(ch)]
+@@ -1834,6 +1841,9 @@
+ #define _pcre2_default_compile_context PCRE2_SUFFIX(_pcre2_default_compile_context_)
+ #define _pcre2_default_match_context PCRE2_SUFFIX(_pcre2_default_match_context_)
+ #define _pcre2_default_tables PCRE2_SUFFIX(_pcre2_default_tables_)
++#if PCRE2_CODE_UNIT_WIDTH == 32
++#define _pcre2_dummy_ucd_record PCRE2_SUFFIX(_pcre2_dummy_ucd_record_)
++#endif
+ #define _pcre2_hspace_list PCRE2_SUFFIX(_pcre2_hspace_list_)
+ #define _pcre2_vspace_list PCRE2_SUFFIX(_pcre2_vspace_list_)
+ #define _pcre2_ucd_caseless_sets PCRE2_SUFFIX(_pcre2_ucd_caseless_sets_)
+@@ -1858,6 +1868,9 @@
+ extern const uint32_t PRIV(vspace_list)[];
+ extern const uint32_t PRIV(ucd_caseless_sets)[];
+ extern const ucd_record PRIV(ucd_records)[];
++#if PCRE2_CODE_UNIT_WIDTH == 32
++extern const ucd_record PRIV(dummy_ucd_record)[];
++#endif
+ extern const uint8_t PRIV(ucd_stage1)[];
+ extern const uint16_t PRIV(ucd_stage2)[];
+ extern const uint32_t PRIV(ucp_gbtable)[];
+
+--- trunk/src/pcre2_ucd.c 2015/07/17 15:44:51 316
++++ trunk/src/pcre2_ucd.c 2017/02/24 18:25:32 670
+@@ -41,6 +41,20 @@
+
+ const char *PRIV(unicode_version) = "8.0.0";
+
++/* 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. */
++
++#if PCRE2_CODE_UNIT_WIDTH == 32
++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 pcre2_internal.h (the actual
+ field names will be different):
diff --git a/gnu/packages/pcre.scm b/gnu/packages/pcre.scm
index 011a30dd3..9f610e59f 100644
--- a/gnu/packages/pcre.scm
+++ b/gnu/packages/pcre.scm
@@ -81,7 +81,8 @@ POSIX regular expression API.")
(sha256
(base32
- "0vn5g0mkkp99mmzpissa06hpyj6pk9s4mlwbjqrjvw3ihy8rpiyz"))))
+ "0vn5g0mkkp99mmzpissa06hpyj6pk9s4mlwbjqrjvw3ihy8rpiyz"))
+ (patches (search-patches "pcre2-CVE-2017-7186.patch"))))
(build-system gnu-build-system)
(inputs `(("bzip2" ,bzip2)
("readline" ,readline)
--
2.12.2
This bug report was last modified 8 years and 45 days ago.
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