libpcre/libpcre-8.37-CVE-2015-5073.patch

   1 https://bugs.exim.org/show_bug.cgi?id=1651
   2 https://bugs.gentoo.org/553300
   3 https://bugzilla.redhat.com/1237224
   4
   5 From 354e1f8e921dcb9cf2f3a5eac93cd826d01a7d8a Mon Sep 17 00:00:00 2001
   6 From: ph10 <ph10@2f5784b3-3f2a-0410-8824-cb99058d5e15>
   7 Date: Tue, 23 Jun 2015 16:34:53 +0000
   8 Subject: [PATCH] Fix buffer overflow for forward reference within backward
   9  assertion with excess closing parenthesis. Bugzilla 1651.
  10 MIME-Version: 1.0
  11 Content-Type: text/plain; charset=UTF-8
  12 Content-Transfer-Encoding: 8bit
  13
  14 This is upstream commit ported to 8.37:
  15
  16 commit 764692f9aea9eab50fdba6cb537441d8b34c6c37
  17 Author: ph10 <ph10@2f5784b3-3f2a-0410-8824-cb99058d5e15>
  18 Date:   Tue Jun 23 16:34:53 2015 +0000
  19
  20     Fix buffer overflow for forward reference within backward assertion with excess
  21     closing parenthesis. Bugzilla 1651.
  22
  23     git-svn-id: svn://vcs.exim.org/pcre/code/trunk@1571 2f5784b3-3f2a-0410-8824-cb99058d5e15
  24
  25 It fixes CVE-2015-5073.
  26
  27 Signed-off-by: Petr Písař <ppisar@redhat.com>
  28 ---
  29  pcre_compile.c       | 2 +-
  30  testdata/testinput2  | 2 ++
  31  testdata/testoutput2 | 3 +++
  32  3 files changed, 6 insertions(+), 1 deletion(-)
  33
  34 diff --git a/pcre_compile.c b/pcre_compile.c
  35 index 6f06912..b66b1f6 100644
  36 --- a/pcre_compile.c
  37 +++ b/pcre_compile.c
  38 @@ -9392,7 +9392,7 @@ OP_RECURSE that are not fixed length get a diagnosic with a useful offset. The
  39  exceptional ones forgo this. We scan the pattern to check that they are fixed
  40  length, and set their lengths. */
  41
  42 -if (cd->check_lookbehind)
  43 +if (errorcode == 0 && cd->check_lookbehind)
  44    {
  45    pcre_uchar *cc = (pcre_uchar *)codestart;
  46
  47 diff --git a/testdata/testinput2 b/testdata/testinput2
  48 index 83bb471..5cc9ce6 100644
  49 --- a/testdata/testinput2
  50 +++ b/testdata/testinput2
  51 @@ -4154,4 +4154,6 @@ backtracking verbs. --/
  52
  53  "(?J)(?'d'(?'d'\g{d}))"
  54
  55 +/(?=di(?<=(?1))|(?=(.))))/
  56 +
  57  /-- End of testinput2 --/
  58 diff --git a/testdata/testoutput2 b/testdata/testoutput2
  59 index 7dff52a..4decb8d 100644
  60 --- a/testdata/testoutput2
  61 +++ b/testdata/testoutput2
  62 @@ -14425,4 +14425,7 @@ Failed: lookbehind assertion is not fixed length at offset 17
  63
  64  "(?J)(?'d'(?'d'\g{d}))"
  65
  66 +/(?=di(?<=(?1))|(?=(.))))/
  67 +Failed: unmatched parentheses at offset 23
  68 +
  69  /-- End of testinput2 --/
  70 --
  71 2.4.3
  72