diff options
Diffstat (limited to 'gnu/packages/patches/unzip-CVE-2014-9636.patch')
| -rw-r--r-- | gnu/packages/patches/unzip-CVE-2014-9636.patch | 40 |
1 files changed, 14 insertions, 26 deletions
diff --git a/gnu/packages/patches/unzip-CVE-2014-9636.patch b/gnu/packages/patches/unzip-CVE-2014-9636.patch index a38c3da51c..03c1e3c068 100644 --- a/gnu/packages/patches/unzip-CVE-2014-9636.patch +++ b/gnu/packages/patches/unzip-CVE-2014-9636.patch @@ -1,40 +1,28 @@ -Copied from Debian. +Copied from Fedora. -From: mancha <mancha1 AT zoho DOT com> -Date: Mon, 3 Nov 2014 -Subject: Info-ZIP UnZip buffer overflow -Bug-Debian: http://bugs.debian.org/776589 - -By carefully crafting a corrupt ZIP archive with "extra fields" that -purport to have compressed blocks larger than the corresponding -uncompressed blocks in STORED no-compression mode, an attacker can -trigger a heap overflow that can result in application crash or -possibly have other unspecified impact. - -This patch ensures that when extra fields use STORED mode, the -"compressed" and uncompressed block sizes match. +http://pkgs.fedoraproject.org/cgit/unzip.git/plain/unzip-6.0-overflow.patch?id=d18f821e +diff --git a/extract.c b/extract.c +index a0a4929..9ef80b3 100644 --- a/extract.c +++ b/extract.c -@@ -2228,6 +2228,7 @@ +@@ -2214,6 +2214,7 @@ static int test_compr_eb(__G__ eb, eb_size, compr_offset, test_uc_ebdata) ulg eb_ucsize; uch *eb_ucptr; int r; -+ ush eb_compr_method; ++ ush method; if (compr_offset < 4) /* field is not compressed: */ return PK_OK; /* do nothing and signal OK */ -@@ -2244,6 +2245,14 @@ - ((eb_ucsize > 0L) && (eb_size <= (compr_offset + EB_CMPRHEADLEN)))) - return IZ_EF_TRUNC; /* no/bad compressed data! */ +@@ -2223,6 +2224,12 @@ static int test_compr_eb(__G__ eb, eb_size, compr_offset, test_uc_ebdata) + eb_size <= (compr_offset + EB_CMPRHEADLEN))) + return IZ_EF_TRUNC; /* no compressed data! */ -+ /* 2014-11-03 Michal Zalewski, SMS. -+ * For STORE method, compressed and uncompressed sizes must agree. -+ * http://www.info-zip.org/phpBB3/viewtopic.php?f=7&t=450 -+ */ -+ eb_compr_method = makeword( eb + (EB_HEADSIZE + compr_offset)); -+ if ((eb_compr_method == STORED) && (eb_size - compr_offset != eb_ucsize)) -+ return PK_ERR; ++ method = makeword(eb + (EB_HEADSIZE + compr_offset)); ++ if ((method == STORED) && (eb_size != compr_offset + EB_CMPRHEADLEN + eb_ucsize)) ++ return PK_ERR; /* compressed & uncompressed ++ * should match in STORED ++ * method */ + if ( #ifdef INT_16BIT |