Bug 244277 (CVE-2007-3257)

Summary:	CVE-2007-3257 evolution malicious server arbitrary code execution
Product:	[Other] Security Response	Reporter:	Josh Bressers <bressers>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	mbarnes, security-response-team
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
URL:	http://bugzilla.gnome.org/show_bug.cgi?id=447414
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2008-03-10 05:47:34 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:	244283, 244285, 244287, 244289, 244290, 244291, 244292, 244293, 244295
Bug Blocks:

Description Josh Bressers 2007-06-14 19:51:01 UTC

A bug was reported to the upstream BTS detailing a flaw in the way evolution
accepts IMAP server data.  To quote the upstream bug:

    The "SEQUENCE" value in the GData of the IMAP code (camel-imap-folder.c)
    is converted from a string using strtol. This allows for negative values.

    The imap_rescan uses this value as an int. It checks for !seq and
    seq>summary.length. It doesn't check for seq < 0. Although seq is used as
    the index of an array.

    This means that a negative index number can be fed to the array lookup by
    altering the output of an IMAP server.

    I'm marking this as a blocker (very very serious) security bug as this is
    remotely exploitable (I can put shell code in the UID field of the IMAP
    code, and make it execute on the victim's computer, as at the seq'd field
    of the index a g_strdup of the UID is written to memory. By carefully
    calculating the negative value and overwriting the instruction pointer
    near the array's start, I can let it point to that memory and get it to
    execute).

This flaw is only exploitable via a man in the middle, or a malicious IMAP server.

Comment 4 Matthew Barnes 2008-03-10 05:47:34 UTC

I assume this has been released by now.  Closing as ERRATA.