#2009-017 PHP multiple issues

Description:

PHP, an open source scripting language, suffers from several bugs that may
pose a security risk.

The reported issues have been discovered in several API functions, issues
include buffer overflows, near null reads/writes, arbitrary memory read
and an off-by-one issue. Some of the issues have been previously reported
in older versions of PHP but they either have not been fixed or they were
re-introduced in a later time. The issues have been discovered in both
core and, in some cases, PECL functions/classes/methods.

The following methods have been fixed.

    ibase_pconnect
    ibase_connect
    com_print_typeinfo
    popen
    mssql_connect
    mssql_pconnect
    SplFileObject
    DOMImplementation->createDocumentType
    documentation()->public_id
    SDO_DAS_ChangeSummary->beginLogging
    SDO_DAS_Setting->getPropertyIndex
    SDO_SequenceImpl->getProperty

The following methods have been removed in PHP 5.3, they are still
available without fixes in 5.2.11.

    msql_close
    msql_connect
    msql_pconnect
    msql_select_db
    msql_list_tables

Affected version:

PHP < 5.3.1

Fixed version:

PHP >= 5.3.1

Credit: vulnerability report received from Emmanouel Kellinis, KPMG London.

CVE: N/A

Timeline:

2009-07-10: vulnerability report received
2009-07-15: contacted PHP security team
2009-07-15: vendor provides initial feedback, classifies the security
            impact as low
2009-08-09: oCERT asks for feedback about the timescale for eventual fixes
2009-08-24: vendor replies that most issues will not be fixed as they are
            present in deprecated extensions or are not understood
2009-08-25: reporter offers to clarify all the issues and provides test
            cases
2009-08-26: after reporter feedback vendor commits more fixes
2009-10-05: reporter asks clarification about fixed/pending bugs
2009-10-27: after further reporter feedback vendor commits more fixes
2009-11-30: advisory published

References:
http://svn.php.net/viewvc?view=revision&revision=289996
http://svn.php.net/viewvc/php/php-src/branches/PHP_5_3/ext/interbase/interbase.c?r1=272370&r284159
http://svn.php.net/viewvc?view=revision&revision=287779
http://svn.php.net/viewvc/php/php-src/trunk/TSRM/tsrm_win32.c?r1=287673&r2=287779
http://www.php.net/ChangeLog-5.php#5.3.1

Permalink:
http://www.ocert.org/advisories/ocert-2009-017.html

-- 
Andrea Barisani |                Founder & Project Coordinator
          oCERT | Open Source Computer Emergency Response Team

<lcars@ocert.org>                         http://www.ocert.org
 0x864C9B9E 0A76 074A 02CD E989 CE7F AC3F DA47 578E 864C 9B9E
        "Pluralitas non est ponenda sine necessitate"