From eca24c7ddd296fe8dd112fd89fb288411e407379 Mon Sep 17 00:00:00 2001 From: OpenWrt community Date: Mon, 30 Oct 2023 14:46:57 +0100 Subject: [PATCH] fix: out-of-bounds read or write and crash https://nvd.nist.gov/vuln/detail/CVE-2014-9636 CVE: CVE-2014-9636 --- extract.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/extract.c b/extract.c index ec31e60..d816603 100644 --- a/extract.c +++ b/extract.c @@ -2228,6 +2228,7 @@ 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; if (compr_offset < 4) /* field is not compressed: */ return PK_OK; /* do nothing and signal OK */ @@ -2244,6 +2245,14 @@ static int test_compr_eb(__G__ eb, eb_size, compr_offset, test_uc_ebdata) ((eb_ucsize > 0L) && (eb_size <= (compr_offset + EB_CMPRHEADLEN)))) return IZ_EF_TRUNC; /* no/bad 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; + if ( #ifdef INT_16BIT (((ulg)(extent)eb_ucsize) != eb_ucsize) || --