Bug 260601 (CVE-2007-4565)

Summary:	CVE-2007-4565 Fetchmail NULL pointer dereference
Product:	[Other] Security Response	Reporter:	Red Hat Product Security <security-response-team>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	bressers, kreilly, vcrhonek, vdanen
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
URL:	http://nvd.nist.gov/nvd.cfm?cvename=CVE-2007-4565
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2009-11-19 16:41:49 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:	260861, 260881, 516266, 516267, 516268, 516269, 516270
Bug Blocks:

Comment 1 Lubomir Kundrak 2007-08-28 15:52:57 UTC

Common Vulnerabilities and Exposures assigned an identifier CVE-2007-4565
to the following vulnerability:

fetchmail before 6.3.9 allows context-dependent attackers to cause a
denial of service (NULL dereference and application crash) by refusing
certain warning messages that are sent over SMTP.

http://mknod.org/svn/fetchmail/branches/BRANCH_6-3/fetchmail-SA-2007-02.txt

Comment 3 Lubomir Kundrak 2007-08-29 16:05:29 UTC

Fetchmail dereferences NULL after SMTP server not accepting his warning mail to
postmaster. Attacker could possibly make fetchmail generate a warning (i.e. by
sending too big/malformed mail), but is pretty limited in how could he get the
SMTP server refuse a message (maybe fill his mail queue storage by sending lots
of mails). All he would get would be to crash the fetchmail.

Comment 4 Lubomir Kundrak 2007-08-29 16:07:00 UTC

The Red Hat Security Response Team has rated this issue as having low security
impact, a future update may address this flaw. More information regarding issue
severity can be found here: 

http://www.redhat.com/security/updates/classification/#low

Comment 7 errata-xmlrpc 2009-09-08 15:20:56 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 3
  Red Hat Enterprise Linux 4
  Red Hat Enterprise Linux 5

Via RHSA-2009:1427 https://rhn.redhat.com/errata/RHSA-2009-1427.html

Comment 8 Red Hat Bugzilla 2009-10-23 19:03:56 UTC

Reporter changed to security-response-team by request of Jay Turner.