Bug 165679 - CVE-2005-2458 gzip/zlib flaws
Summary: CVE-2005-2458 gzip/zlib flaws
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: kernel
Version: 4.0
Hardware: All
OS: Linux
medium
low
Target Milestone: ---
: ---
Assignee: Peter Staubach
QA Contact: Brian Brock
URL:
Whiteboard: impact=low,source=vendorsec
Keywords: Security
Depends On:
Blocks: 168429
TreeView+ depends on / blocked
 
Reported: 2005-08-11 11:45 UTC by Mark J. Cox
Modified: 2007-11-30 22:07 UTC (History)
1 user (show)

(edit)
Clone Of:
(edit)
Last Closed: 2006-01-17 08:32:30 UTC


Attachments (Terms of Use)
Proposed patch (1.48 KB, patch)
2005-10-20 17:51 UTC, Peter Staubach
no flags Details | Diff


External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2005:808 normal SHIPPED_LIVE Important: kernel security update 2005-10-27 04:00:00 UTC
Red Hat Product Errata RHSA-2006:0101 normal SHIPPED_LIVE Important: kernel security update 2006-01-17 05:00:00 UTC

Description Mark J. Cox 2005-08-11 11:45:49 UTC
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 4 Mark J. Cox 2005-08-18 10:09:17 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 5 Jason Baron 2005-08-22 19:00:19 UTC
Marc, do CAN-2005-2458?

Comment 6 Jason Baron 2005-08-22 19:01:00 UTC
i meant Mark. sorry.

Comment 7 Peter Staubach 2005-10-20 17:51:54 UTC
Created attachment 120202 [details]
Proposed patch

Comment 12 Red Hat Bugzilla 2006-01-17 08:32:30 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-2006-0101.html



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