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unzip: replace crc32 patch from debian

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This commit is contained in:
Chongyun Lee 2022-08-09 20:55:55 +08:00 committed by Uchiha Kakashi
parent f64c1d8d4e
commit 7b33c22dc8
1 changed files with 31 additions and 23 deletions
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54
packages/unzip/bugfix-cve-2014-8139-crc32.patch
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@ -1,22 +1,26 @@
--- unzip60/extract.c 2010-04-03 14:41:55 -0500
+++ unzip60/extract.c 2014-12-03 15:33:35 -0600
@@ -1,5 +1,5 @@
From: "Steven M. Schweda" <sms@antinode.info>
Subject: Fix CVE-2014-8139: CRC32 verification heap-based overflow
Bug-Debian: https://bugs.debian.org/773722
--- a/extract.c
+++ b/extract.c
@@ -1,5 +1,5 @@
/*
- Copyright (c) 1990-2009 Info-ZIP. All rights reserved.
+ Copyright (c) 1990-2014 Info-ZIP. All rights reserved.
See the accompanying file LICENSE, version 2009-Jan-02 or later
(the contents of which are also included in unzip.h) for terms of use.
@@ -298,6 +298,8 @@
@@ -298,6 +298,8 @@
#ifndef SFX
static ZCONST char Far InconsistEFlength[] = "bad extra-field entry:\n \
EF block length (%u bytes) exceeds remaining EF data (%u bytes)\n";
+ static ZCONST char Far TooSmallEFlength[] = "bad extra-field entry:\n \
+ static ZCONST char Far TooSmallEBlength[] = "bad extra-field entry:\n \
+ EF block length (%u bytes) invalid (< %d)\n";
static ZCONST char Far InvalidComprDataEAs[] =
" invalid compressed data for EAs\n";
# if (defined(WIN32) && defined(NTSD_EAS))
@@ -2023,7 +2025,8 @@
@@ -2023,7 +2025,8 @@
ebID = makeword(ef);
ebLen = (unsigned)makeword(ef+EB_LEN);
@ -26,20 +30,24 @@
/* Discovered some extra field inconsistency! */
if (uO.qflag)
Info(slide, 1, ((char *)slide, "%-22s ",
@@ -2032,6 +2035,16 @@
ebLen, (ef_len - EB_HEADSIZE)));
return PK_ERR;
}
+ else if (ebLen < EB_HEADSIZE)
+ {
+ /* Extra block length smaller than header length. */
+ if (uO.qflag)
+ Info(slide, 1, ((char *)slide, "%-22s ",
+ FnFilter1(G.filename)));
+ Info(slide, 1, ((char *)slide, LoadFarString(TooSmallEFlength),
+ ebLen, EB_HEADSIZE));
+ return PK_ERR;
+ }
switch (ebID) {
case EF_OS2:
@@ -2158,11 +2161,19 @@
}
break;
case EF_PKVMS:
- if (makelong(ef+EB_HEADSIZE) !=
+ if (ebLen < 4)
+ {
+ Info(slide, 1,
+ ((char *)slide, LoadFarString(TooSmallEBlength),
+ ebLen, 4));
+ }
+ else if (makelong(ef+EB_HEADSIZE) !=
crc32(CRCVAL_INITIAL, ef+(EB_HEADSIZE+4),
(extent)(ebLen-4)))
+ {
Info(slide, 1, ((char *)slide,
LoadFarString(BadCRC_EAs)));
+ }
break;
case EF_PKW32:
case EF_PKUNIX: