oCERT Advisories

#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
      domnotation()->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
2009-12-01: corrected typo in fixed methods section

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

© oCERT.org - Some rights reserved.