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Bug 165681

Summary:	CVE-2005-2458 gzip/zlib flaws (ipf)
Product:	Red Hat Enterprise Linux 2.1	Reporter:	Mark J. Cox <mjc>
Component:	kernel	Assignee:	Don Howard <dhoward>
Status:	CLOSED ERRATA	QA Contact:	Brian Brock <bbrock>
Severity:	low	Docs Contact:
Priority:	medium
Version:	2.1	Keywords:	Security
Target Milestone:	---
Target Release:	---
Hardware:	ia64
OS:	Linux
Whiteboard:	impact=low,source=vendorsec
Fixed In Version:	RHSA-2006-0190	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2006-02-01 17:45:47 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:	143573

Description Mark J. Cox 2005-08-11 11:51:17 UTC

+++ This bug was initially created as a clone of Bug #165679 +++

Tim Yamin from Gentoo noticed that some older security related bugs in the
decompression code had not been fixed in the kernel.  This is fairly minor as
there are few places where the kernel decompresses arbitrary data.  However it
could be a problem for things like zisofs (if someone mounts a malicious
filesystem), perhaps cslip or ppp too).

CAN-2005-2458 
http://sources.redhat.com/ml/bug-gnu-utils/1999-06/msg00183.html
impact=low,source=vendorsec,public=19990625

CAN-2005-2459
http://bugs.gentoo.org/show_bug.cgi?id=94584
impact=low,source=vendorsec,public=20050531

Fix for 2.6 is here, pretty much identical for 2.4:

http://linux.bkbits.net:8080/linux-2.6/cset@42f3f4e9KIoV6pLtA430xgwjKh2V7g

Comment 2 Mark J. Cox 2005-08-18 10:11:38 UTC

Sergey Vlasov has done some analysis on these issues and discovered that the
changes in file lib/zlib_inflate/inftrees.c are incorrect and in fact are not
needed.  Gentoo have agreed and therefore from the patch above please ignore the
lib/zlib_inflate/inftrees.c hunk.  This means that CAN-2005-2549 is dropped, but
CAN-2005-2548 still applies.

Comment 6 Red Hat Bugzilla 2006-02-01 17:45:47 UTC

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2006-0190.html