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File _service:tar_scm:unzip-6.0-cve-2014-8140.patch of Package unzip
diff --git a/extract.c b/extract.c index c741b5f..e4a4c7b 100644 --- a/extract.c +++ b/extract.c @@ -2240,10 +2240,17 @@ static int test_compr_eb(__G__ eb, eb_size, compr_offset, test_uc_ebdata) if (compr_offset < 4) /* field is not compressed: */ return PK_OK; /* do nothing and signal OK */ + /* Return no/bad-data error status if any problem is found: + * 1. eb_size is too small to hold the uncompressed size + * (eb_ucsize). (Else extract eb_ucsize.) + * 2. eb_ucsize is zero (invalid). 2014-12-04 SMS. + * 3. eb_ucsize is positive, but eb_size is too small to hold + * the compressed data header. + */ if ((eb_size < (EB_UCSIZE_P + 4)) || - ((eb_ucsize = makelong(eb+(EB_HEADSIZE+EB_UCSIZE_P))) > 0L && - eb_size <= (compr_offset + EB_CMPRHEADLEN))) - return IZ_EF_TRUNC; /* no compressed data! */ + ((eb_ucsize = makelong( eb+ (EB_HEADSIZE+ EB_UCSIZE_P))) == 0L) || + ((eb_ucsize > 0L) && (eb_size <= (compr_offset + EB_CMPRHEADLEN)))) + return IZ_EF_TRUNC; /* no/bad compressed data! */ method = makeword(eb + (EB_HEADSIZE + compr_offset)); if ((method == STORED) && (eb_size != compr_offset + EB_CMPRHEADLEN + eb_ucsize))
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