Date: Thu, 2 Jan 2014 08:03:35 -0500 (EST) From: cve-assign@...re.org To: fweimer@...hat.com Cc: cve-assign@...re.org, oss-security@...ts.openwall.com Subject: Re: kwallet crypto misuse -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 > http://security.stackexchange.com/a/44010/32167 > then fill it with zeros; then XOR all these zeros with the data to > encrypt (which won't change the data...); then proceed to encrypt each > block independently of each other. This is, indeed, ECB mode, not CBC. > It is quite obvious that this is a programming error ... This implies > that the random IV which was computed does nothing here; it is > encrypted by itself but does not impact any other byte in the whole > file. > From: Florian Weimer > Should we treat this as a minor vulnerability? Yes; use CVE-2013-7252. > http://gaganpreet.in/blog/2013/07/24/kwallet-security-analysis/ > KWallet uses QDataStream, which encodes QString objects (used in > KWallet maps) as UTF-16. So, the string "abcd" will be stored as > "\0a\0b\0c\0d", which gives four bytes of information per block. Does anyone know whether the KWallet user interface could make it possible to enter passwords containing 16-bit characters (i.e., characters that cannot be represented using 8 bits)? If that would not be possible, then this issue could potentially qualify for an additional CVE assignment. - -- CVE assignment team, MITRE CVE Numbering Authority M/S M300 202 Burlington Road, Bedford, MA 01730 USA [ PGP key available through http://cve.mitre.org/cve/request_id.html ] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (SunOS) iQEcBAEBAgAGBQJSxWKOAAoJEKllVAevmvmsb/gH/j2SfS2GXgaPa5K9OQ3d6fqw 1yqHOfxb3azeB2bsgj7bScNVA8oKZRFLiuI7mkEfeOB6bIltcHyA3ZE07fG4dgeh B3yEe9+QUs5dWcAaTif+adbmT9+nU8hLRN09/D4lYUoI/y9SkSn4X0xe9jYfwoCE tKE2VaCrqMVpYe/LD1T5Z9TPZR6oEEXet0t65T8LZgWbh1S+Qo3LMcyfeyBAnJ1q qdspM0EPruNSTHjPJB0v/jP3x/iwMt2xuz6KAFyJqci6RpDMPUmw0JW2iSi2QLSS Chk3tlfeunZHbYS3lueQpqHClqb0H0CN7gHunBvBZyLCj+TwMaLeqL/Y5bRfxEI= =zyg0 -----END PGP SIGNATURE-----
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