Format string vulnerability in stream.c in the phar extension in PHP 5.3.x through 5.3.3 allows context-dependent attackers to obtain sensitive information (memory contents) and possibly execute arbitrary code via a crafted phar:// URI that is not properly handled by the phar_stream_flush function, leading to errors in the php_stream_wrapper_log_error function. NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-2094.

References

• https://nvd.nist.gov/vuln/detail/CVE-2010-2950
• https://bugzilla.redhat.com/show_bug.cgi?id=598537
• http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.html
• http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.html
• http://marc.info/?l=bugtraq&m=130331363227777&w=2
• http://php-security.org/2010/05/14/mops-2010-024-php-phar_stream_flush-format-string-vulnerability/index.html
• http://security-tracker.debian.org/tracker/CVE-2010-2950
• http://support.apple.com/kb/HT4581
• http://svn.php.net/viewvc?view=revision&revision=302565
• http://www.mandriva.com/security/advisories?name=MDVSA-2010:254
• http://www.php.net/ChangeLog-5.php
• http://www.php.net/archive/2010.php#id2010-12-10-1
• http://www.php.net/releases/5_3_4.php