Description
A flaw was found in the way the crypt() password hashing function from the
optional PostgreSQL pgcrypto contrib module performed password
transformation when used with the DES algorithm. If the password string to
be hashed contained the 0x80 byte value, the remainder of the string was
ignored when calculating the hash, significantly reducing the password
strength. This made brute-force guessing more efficient as the whole
password was not required to gain access to protected resources.
(CVE-2012-2143)
A denial of service flaw was found in the way the PostgreSQL server
performed a user privileges check when applying SECURITY DEFINER or SET
attributes to a procedural language's (such as PL/Perl or PL/Python) call
handler function. A non-superuser database owner could use this flaw to
cause the PostgreSQL server to crash due to infinite recursion.
(CVE-2012-2655)