Bug 783605 (CVE-2012-0788)

Summary:	CVE-2012-0788 php: crash when unserializing serialized PDORow object
Product:	[Other] Security Response	Reporter:	Kurt Seifried <kseifried>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	fedora, jorton, ldimaggi, rpm, tkramer
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	php 5.3.9	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2012-05-15 16:03:54 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	782956

Description Kurt Seifried 2012-01-21 00:16:45 UTC

https://bugs.php.net/bug.php?id=55776

 [2011-09-24 19:21 UTC] grinyad at mail dot ru

Description:
------------
<?php

// make a Pdo_Mysql statement before

$result = $stmt->fetch(PDO::FETCH_LAZY);

session_start();

$_SESSION['PDORow'] = $result;
?>

Is crashing on next request after saving PDORow to session on session_start()

[2011-09-24 19:24 UTC] aharvey

What do you mean by "crashing"? Is the actual PHP process crashing, or
are you just getting an error message because PDO statements aren't
serialisable (which is expected)?

 [2011-09-25 08:56 UTC] grinyad at mail dot ru

Is a Apache crash. It gives a CGI/FastCGI Send/Don't Send window.

http://img171.imageshack.us/img171/3953/57126366.jpg

After few minutes is crashing apache server:

http://img840.imageshack.us/img840/2981/21231006.jpg

 [2011-09-25 12:39 UTC] johannes

PDORow objects may not be serialized and therefore not be put in a session. In svn it was fixed to throw a warning and not crash anymore this will be in future releases.

Comment 3 Stefan Cornelius 2012-05-15 16:02:53 UTC

Statement:

Red Hat does not consider this flaw to be a security issue. The bug can only be triggered by the PHP script author, which does not cross trust boundary.