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[ MDVSA-2015:110 ] postgresql
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Mandriva Linux Security Advisory MDVSA-2015:110
Package : postgresql
Date : March 29, 2015
Affected: Business Server 2.0
Updated postgresql packages fix multiple security vulnerabilities:
Granting a role without ADMIN OPTION is supposed to prevent the
grantee from adding or removing members from the granted role, but
this restriction was easily bypassed by doing SET ROLE first. The
security impact is mostly that a role member can revoke the access
of others, contrary to the wishes of his grantor. Unapproved role
member additions are a lesser concern, since an uncooperative role
member could provide most of his rights to others anyway by creating
views or SECURITY DEFINER functions (CVE-2014-0060).
The primary role of PL validator functions is to be called implicitly
during CREATE FUNCTION, but they are also normal SQL functions
that a user can call explicitly. Calling a validator on a function
actually written in some other language was not checked for and could
be exploited for privilege-escalation purposes. The fix involves
adding a call to a privilege-checking function in each validator
function. Non-core procedural languages will also need to make this
change to their own validator functions, if any (CVE-2014-0061).
If the name lookups come to different conclusions due to concurrent
activity, we might perform some parts of the DDL on a different
table than other parts. At least in the case of CREATE INDEX, this
can be used to cause the permissions checks to be performed against
a different table than the index creation, allowing for a privilege
escalation attack (CVE-2014-0062).
The MAXDATELEN constant was too small for the longest possible value of
type interval, allowing a buffer overrun in interval_out(). Although
the datetime input functions were more careful about avoiding buffer
overrun, the limit was short enough to cause them to reject some valid
inputs, such as input containing a very long timezone name. The ecpg
library contained these vulnerabilities along with some of its own
Several functions, mostly type input functions, calculated an
allocation size without checking for overflow. If overflow did
occur, a too-small buffer would be allocated and then written past
Use strlcpy() and related functions to provide a clear guarantee
that fixed-size buffers are not overrun. Unlike the preceding items,
it is unclear whether these cases really represent live issues,
since in most cases there appear to be previous constraints on the
size of the input string. Nonetheless it seems prudent to silence
all Coverity warnings of this type (CVE-2014-0065).
There are relatively few scenarios in which crypt() could return NULL,
but contrib/chkpass would crash if it did. One practical case in which
this could be an issue is if libc is configured to refuse to execute
unapproved hashing algorithms (e.g., FIPS mode) (CVE-2014-0066).
Since the temporary server started by make check uses trust
authentication, another user on the same machine could connect to it
as database superuser, and then potentially exploit the privileges of
the operating-system user who started the tests. A future release will
probably incorporate changes in the testing procedure to prevent this
risk, but some public discussion is needed first. So for the moment,
just warn people against using make check when there are untrusted
users on the same machine (CVE-2014-0067).
A user with limited clearance on a table might have access to
information in columns without SELECT rights on through server error
The function to_char() might read/write past the end of a buffer. This
might crash the server when a formatting template is processed
The pgcrypto module is vulnerable to stack buffer overrun that might
crash the server (CVE-2015-0243).
Emil Lenngren reported that an attacker can inject SQL commands when
the synchronization between client and server is lost (CVE-2015-0244).
This update provides PostgreSQL versions 9.3.6 and 9.2.10 that fix
these issues, as well as several others.
Mandriva Business Server 2/X86_64:
To upgrade automatically use MandrivaUpdate or urpmi. The verification
of md5 checksums and GPG signatures is performed automatically for you.
All packages are signed by Mandriva for security. You can obtain the
GPG public key of the Mandriva Security Team by executing:
gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98
You can view other update advisories for Mandriva Linux at:
If you want to report vulnerabilities, please contact
Type Bits/KeyID Date User ID
pub 1024D/22458A98 2000-07-10 Mandriva Security Team
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