unzip-6.0-cve-2014-8140.patch 1.3 KB

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  1. diff --git a/extract.c b/extract.c
  2. index c741b5f..e4a4c7b 100644
  3. --- a/extract.c
  4. +++ b/extract.c
  5. @@ -2240,10 +2240,17 @@ static int test_compr_eb(__G__ eb, eb_size, compr_offset, test_uc_ebdata)
  6. if (compr_offset < 4) /* field is not compressed: */
  7. return PK_OK; /* do nothing and signal OK */
  8. + /* Return no/bad-data error status if any problem is found:
  9. + * 1. eb_size is too small to hold the uncompressed size
  10. + * (eb_ucsize). (Else extract eb_ucsize.)
  11. + * 2. eb_ucsize is zero (invalid). 2014-12-04 SMS.
  12. + * 3. eb_ucsize is positive, but eb_size is too small to hold
  13. + * the compressed data header.
  14. + */
  15. if ((eb_size < (EB_UCSIZE_P + 4)) ||
  16. - ((eb_ucsize = makelong(eb+(EB_HEADSIZE+EB_UCSIZE_P))) > 0L &&
  17. - eb_size <= (compr_offset + EB_CMPRHEADLEN)))
  18. - return IZ_EF_TRUNC; /* no compressed data! */
  19. + ((eb_ucsize = makelong( eb+ (EB_HEADSIZE+ EB_UCSIZE_P))) == 0L) ||
  20. + ((eb_ucsize > 0L) && (eb_size <= (compr_offset + EB_CMPRHEADLEN))))
  21. + return IZ_EF_TRUNC; /* no/bad compressed data! */
  22. method = makeword(eb + (EB_HEADSIZE + compr_offset));
  23. if ((method == STORED) && (eb_size != compr_offset + EB_CMPRHEADLEN + eb_ucsize))