Bug 476564 (CVE-2008-5618)

Summary:	CVE-2008-5618 rsyslog: DoS in the imupd plugin by emitting messages when a non-permitted sender tried to send a message to it
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	pvrabec, theinric
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
URL:	http://www.rsyslog.com/Topic4.phtml
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2009-01-09 08:39:58 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:

Description Jan Lieskovsky 2008-12-15 17:49:47 UTC

A denial of service flaw was reported in the upstream Rsyslog syslogd
support. A non-permitted sender could send a message to the imudp plugin,
which would reply by emitting a message, each time such an request
was made. This could allow an attacker to cause a DoS (excessive disk space
consummation). 

References:
http://www.rsyslog.com/Topic4.phtml

Upstream patch against 3.20.2 (v3-stable) version:
http://git.adiscon.com/?p=rsyslog.git;a=commitdiff;h=afdccceefa30306cf720a27efd5a29bcc5a916c9

Comment 1 Jan Lieskovsky 2008-12-15 17:51:30 UTC

This issue does NOT affect the version of the Rsyslog package, as shipped
with Red Hat Enterprise Linux 5.

This issue affects the versions of the Rsyslog package, as shipped
with Fedora releases of 9, 10 and devel (Fedora release of 8 is not
affected).

Comment 2 Tomas Heinrich 2008-12-15 18:26:14 UTC

This issue affects versions 3.20.1 and 3.21.8.
The current versions in Fedora 9, 10 and devel are 3.20.2, 3.21.9 and 3.21.9, respectively.

The referenced patch should be against version 3.20.1.

Comment 3 Fedora Update System 2008-12-17 09:51:19 UTC

rsyslog-3.20.2-2.fc9 has been submitted as an update for Fedora 9.
http://admin.fedoraproject.org/updates/rsyslog-3.20.2-2.fc9

Comment 4 Tomas Hoger 2008-12-17 10:18:22 UTC

CVE id CVE-2008-5618 was assigned to this issue:

imudp in rsyslog 4.x before 4.1.2, 3.21 before 3.21.9 beta, and 3.20
before 3.20.2 generates a message even when it is sent by an
unauthorized sender, which allows remote attackers to cause a denial
of service (disk consumption) via a large number of spurious messages.

Comment 5 Fedora Update System 2008-12-21 08:38:18 UTC

rsyslog-3.20.2-2.fc9 has been pushed to the Fedora 9 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 6 Fedora Update System 2008-12-21 08:44:53 UTC

rsyslog-3.21.9-1.fc10 has been pushed to the Fedora 10 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 7 Red Hat Product Security 2009-01-09 08:39:58 UTC

This issue was addressed in:

Fedora:
  https://admin.fedoraproject.org/updates/F10/FEDORA-2008-11476
  https://admin.fedoraproject.org/updates/F9/FEDORA-2008-11538