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From 01611089a2be24b740e67d5fac8d7b44b2330302 Mon Sep 17 00:00:00 2001
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From: ph10 <ph10@2f5784b3-3f2a-0410-8824-cb99058d5e15>
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Date: Wed, 10 Feb 2016 19:13:17 +0000
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Subject: [PATCH] Fix workspace overflow for (*ACCEPT) with deeply nested
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parentheses.
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Ported to 8.32:
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commit 943a5105b9fe2842851003f692c7077a6cdbeefe
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Author: ph10 <ph10@2f5784b3-3f2a-0410-8824-cb99058d5e15>
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Date: Wed Feb 10 19:13:17 2016 +0000
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Fix workspace overflow for (*ACCEPT) with deeply nested parentheses.
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git-svn-id: svn://vcs.exim.org/pcre/code/trunk@1631 2f5784b3-3f2a-0410-8824-cb99058d5e15
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Signed-off-by: Petr Písař <ppisar@redhat.com>
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---
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pcre_compile.c | 21 ++++++++++++++++++---
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pcre_internal.h | 2 +-
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pcreposix.c | 3 ++-
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testdata/testinput11 | 2 ++
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testdata/testoutput11-16 | 3 +++
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testdata/testoutput11-32 | 3 +++
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testdata/testoutput11-8 | 3 +++
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7 files changed, 32 insertions(+), 5 deletions(-)
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diff --git a/pcre_compile.c b/pcre_compile.c
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index 8eb4b0f..746dc70 100644
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--- a/pcre_compile.c
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+++ b/pcre_compile.c
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@@ -508,6 +508,7 @@ static const char error_texts[] =
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"name is too long in (*MARK), (*PRUNE), (*SKIP), or (*THEN)\0"
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"character value in \\u.... sequence is too large\0"
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"invalid UTF-32 string\0"
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+ "regular expression is too complicated\0"
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;
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/* Table to identify digits and hex digits. This is used when compiling
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@@ -3881,7 +3882,8 @@ for (;; ptr++)
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if (code > cd->start_workspace + cd->workspace_size -
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WORK_SIZE_SAFETY_MARGIN) /* Check for overrun */
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{
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- *errorcodeptr = ERR52;
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+ *errorcodeptr = (code >= cd->start_workspace + cd->workspace_size)?
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+ ERR52 : ERR87;
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goto FAILED;
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}
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@@ -5701,8 +5703,21 @@ for (;; ptr++)
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cd->had_accept = TRUE;
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for (oc = cd->open_caps; oc != NULL; oc = oc->next)
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{
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- *code++ = OP_CLOSE;
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- PUT2INC(code, 0, oc->number);
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+ if (lengthptr != NULL)
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+ {
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+#ifdef COMPILE_PCRE8
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+ *lengthptr += 1 + IMM2_SIZE;
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+#elif defined COMPILE_PCRE16
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+ *lengthptr += 2 + IMM2_SIZE;
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+#elif defined COMPILE_PCRE32
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+ *lengthptr += 4 + IMM2_SIZE;
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+#endif
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+ }
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+ else
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+ {
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+ *code++ = OP_CLOSE;
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+ PUT2INC(code, 0, oc->number);
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+ }
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}
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setverb = *code++ =
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(cd->assert_depth > 0)? OP_ASSERT_ACCEPT : OP_ACCEPT;
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diff --git a/pcre_internal.h b/pcre_internal.h
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index 536b3d8..157de08 100644
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--- a/pcre_internal.h
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+++ b/pcre_internal.h
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@@ -2270,7 +2270,7 @@ enum { ERR0, ERR1, ERR2, ERR3, ERR4, ERR5, ERR6, ERR7, ERR8, ERR9,
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ERR40, ERR41, ERR42, ERR43, ERR44, ERR45, ERR46, ERR47, ERR48, ERR49,
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ERR50, ERR51, ERR52, ERR53, ERR54, ERR55, ERR56, ERR57, ERR58, ERR59,
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ERR60, ERR61, ERR62, ERR63, ERR64, ERR65, ERR66, ERR67, ERR68, ERR69,
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- ERR70, ERR71, ERR72, ERR73, ERR74, ERR75, ERR76, ERR77, ERRCOUNT };
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+ ERR70, ERR71, ERR72, ERR73, ERR74, ERR75, ERR76, ERR77, ERR87, ERRCOUNT };
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/* JIT compiling modes. The function list is indexed by them. */
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enum { JIT_COMPILE, JIT_PARTIAL_SOFT_COMPILE, JIT_PARTIAL_HARD_COMPILE,
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diff --git a/pcreposix.c b/pcreposix.c
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index 15195c0..700676c 100644
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--- a/pcreposix.c
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+++ b/pcreposix.c
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@@ -162,7 +162,8 @@ static const int eint[] = {
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/* 75 */
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REG_BADPAT, /* overlong MARK name */
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REG_BADPAT, /* character value in \u.... sequence is too large */
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- REG_BADPAT /* invalid UTF-32 string (should not occur) */
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+ REG_BADPAT, /* invalid UTF-32 string (should not occur) */
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+ REG_BADPAT /* pattern too complicated */
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};
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/* Table of texts corresponding to POSIX error codes */
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diff --git a/testdata/testinput11 b/testdata/testinput11
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index 7e8e542..014c722 100644
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--- a/testdata/testinput11
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+++ b/testdata/testinput11
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@@ -134,4 +134,6 @@ is required for these tests. --/
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/(((a\2)|(a*)\g<-1>))*a?/B
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+/([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00](*ACCEPT)/
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+
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/-- End of testinput11 --/
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diff --git a/testdata/testoutput11-16 b/testdata/testoutput11-16
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index 3cb3049..6ae9e2f 100644
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--- a/testdata/testoutput11-16
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+++ b/testdata/testoutput11-16
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@@ -734,4 +734,7 @@ Memory allocation (code space): 14
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41 End
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------------------------------------------------------------------
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+/([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00](*ACCEPT)/
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+Failed: regular expression is too complicated at offset 490
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+
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/-- End of testinput11 --/
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diff --git a/testdata/testoutput11-32 b/testdata/testoutput11-32
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index 10dee82..124e3d1 100644
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--- a/testdata/testoutput11-32
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+++ b/testdata/testoutput11-32
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@@ -734,4 +734,7 @@ Memory allocation (code space): 28
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41 End
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------------------------------------------------------------------
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+/([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00](*ACCEPT)/
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+Failed: missing ) at offset 509
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+
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/-- End of testinput11 --/
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diff --git a/testdata/testoutput11-8 b/testdata/testoutput11-8
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index a1bd60a..36f6e64 100644
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--- a/testdata/testoutput11-8
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+++ b/testdata/testoutput11-8
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@@ -734,4 +734,7 @@ Memory allocation (code space): 10
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60 End
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------------------------------------------------------------------
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+/([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00](*ACCEPT)/
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+Failed: missing ) at offset 509
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+
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/-- End of testinput11 --/
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--
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2.5.5
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