mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-29 09:02:46 +00:00
69 lines
2.1 KiB
Diff
69 lines
2.1 KiB
Diff
From 354e1f8e921dcb9cf2f3a5eac93cd826d01a7d8a Mon Sep 17 00:00:00 2001
|
|
From: ph10 <ph10@2f5784b3-3f2a-0410-8824-cb99058d5e15>
|
|
Date: Tue, 23 Jun 2015 16:34:53 +0000
|
|
Subject: [PATCH] Fix buffer overflow for forward reference within backward
|
|
assertion with excess closing parenthesis. Bugzilla 1651.
|
|
MIME-Version: 1.0
|
|
Content-Type: text/plain; charset=UTF-8
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
This is upstream commit ported to 8.37:
|
|
|
|
commit 764692f9aea9eab50fdba6cb537441d8b34c6c37
|
|
Author: ph10 <ph10@2f5784b3-3f2a-0410-8824-cb99058d5e15>
|
|
Date: Tue Jun 23 16:34:53 2015 +0000
|
|
|
|
Fix buffer overflow for forward reference within backward assertion with excess
|
|
closing parenthesis. Bugzilla 1651.
|
|
|
|
git-svn-id: svn://vcs.exim.org/pcre/code/trunk@1571 2f5784b3-3f2a-0410-8824-cb99058d5e15
|
|
|
|
It fixes CVE-2015-5073.
|
|
|
|
Signed-off-by: Petr Písař <ppisar@redhat.com>
|
|
---
|
|
pcre_compile.c | 2 +-
|
|
testdata/testinput2 | 2 ++
|
|
testdata/testoutput2 | 3 +++
|
|
3 files changed, 6 insertions(+), 1 deletion(-)
|
|
|
|
diff --git a/pcre_compile.c b/pcre_compile.c
|
|
index 6f06912..b66b1f6 100644
|
|
--- a/pcre_compile.c
|
|
+++ b/pcre_compile.c
|
|
@@ -9392,7 +9392,7 @@ OP_RECURSE that are not fixed length get a diagnosic with a useful offset. The
|
|
exceptional ones forgo this. We scan the pattern to check that they are fixed
|
|
length, and set their lengths. */
|
|
|
|
-if (cd->check_lookbehind)
|
|
+if (errorcode == 0 && cd->check_lookbehind)
|
|
{
|
|
pcre_uchar *cc = (pcre_uchar *)codestart;
|
|
|
|
diff --git a/testdata/testinput2 b/testdata/testinput2
|
|
index 83bb471..5cc9ce6 100644
|
|
--- a/testdata/testinput2
|
|
+++ b/testdata/testinput2
|
|
@@ -4154,4 +4154,6 @@ backtracking verbs. --/
|
|
|
|
"(?J)(?'d'(?'d'\g{d}))"
|
|
|
|
+/(?=di(?<=(?1))|(?=(.))))/
|
|
+
|
|
/-- End of testinput2 --/
|
|
diff --git a/testdata/testoutput2 b/testdata/testoutput2
|
|
index 7dff52a..4decb8d 100644
|
|
--- a/testdata/testoutput2
|
|
+++ b/testdata/testoutput2
|
|
@@ -14425,4 +14425,7 @@ Failed: lookbehind assertion is not fixed length at offset 17
|
|
|
|
"(?J)(?'d'(?'d'\g{d}))"
|
|
|
|
+/(?=di(?<=(?1))|(?=(.))))/
|
|
+Failed: unmatched parentheses at offset 23
|
|
+
|
|
/-- End of testinput2 --/
|
|
--
|
|
2.4.3
|
|
|