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Michal Zalewski <lcamtuf@DIONE.IDS.PL> has found a buffer overflow in the html parser code of the Netscape Navigator in all versions before and including 4.75. html code of the form
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-----BEGIN PGP SIGNED MESSAGE-----
______________________________________________________________________________
SuSE Security Announcement
Package: netscape
Announcement-ID: SuSE-SA:2000:48
Date: Thursday, November 30th, 2000 19:00 MET
Affected SuSE versions: 6.0, 6.1, 6.2, 6.3, 6.4, 7.0
Vulnerability Type: clientside remote vulnerability
Severity (1-10): 4
SuSE default package: yes
Other affected systems: systems w/ netscape versions before 4.76
Content of this advisory:
1) security vulnerability resolved: netscape
problem description, discussion, solution and upgrade information
2) pending vulnerabilities, solutions, workarounds
3) standard appendix (further information)
______________________________________________________________________________
1) problem description, brief discussion, solution, upgrade information
Michal Zalewski <lcamtuf@DIONE.IDS.PL> has found a buffer overflow in
the html parser code of the Netscape Navigator in all versions before
and including 4.75. html code of the form
<form action=foo method=bar>
<input type=password value=long string here>
more form tags
</form>
can crash the browser. It may be possible for an attacker to supply
a webpage that executes arbitrary code as the user running netscape.
As of today, no exploit code is known to exist in the wild.
SuSE provides an update package for the vulnerable software. It is
recommended to upgrade to the latest version found on our ftp server
as described below. The update package introduces Netscape version
4.76.
NOTE:
Please note that Netscape-4.76 is not available for the glibc-2.0-based
SuSE Distributions SuSE-6.0 and 6.1 because Netscape doesn't provide
any binaries for the glibc version in these distributions (glibc-2.0).
For SuSE-6.0 and 6.1, we provide a libc5-based version of netscape-4.76
which runs smoothly on all i386-based SuSE distributions 6.x and 7.x,
provided the package shlibs5 is installed. The package can be found in
the update/5.3 directory on our ftp server (see below).
There are no packages available for platforms other than i386.
NOTE:
The packages on our ftp servers date back to October 31st. Since
there is no release notes or README file with equivalent content
in the netscape tarball, SuSE security was not aware of the fact
that this release of netscape fixes the known problems. This
information can be obtained from (along with information about
other bugfixes)
http://home.netscape.com/eng/mozilla/4.7/relnotes/windows-4.76.html .
Please choose the update package(s) for your distribution from the URLs
listed below and download the necessary rpm files. Then, install the
package using the command `rpm -Uhv file.rpm´. rpm packages have an
internal md5 checksum that protects against file corruption. You can
verify this checksum using the command (independently from the md5
signatures below)
`rpm --checksig --nogpg file.rpm',
The md5 sums under each package are to prove the package authenticity,
independently from the md5 checksums in the rpm package format.
Intel i386 Platform
SuSE-7.0
SuSE-6.4
SuSE-6.3
SuSE-6.2
ftp://ftp.suse.com/pub/suse/i386/update/7.0/xap1/netscape-4.76.glibc21.i386.rpm
7ccebaca7df0937a3c08fc30a27af858
SuSE-6.1
SuSE-6.0
ftp://ftp.suse.com/pub/suse/i386/update/5.3/xap1/netscape-4.76.libc5.i386.rpm
3c4f06c5fea4755083524eb135627380
______________________________________________________________________________
2) Pending vulnerabilities in SuSE Distributions and Workarounds:
- ssh/openssh
Several inconsistencies and configuration bugs have been introduced
in the SuSE rpm packages for the update of openssh (SuSE-SA:2000:47)
that cause the openssh software to not work as reliably as usual.
The packages are about to be reworked, the openssh announcement will
be reissued.
- pidentd
The in.identd daemon on SuSE distributions can be crashed remotely.
We're working on a fix.
- bash1
bash, version 1, handles temporary files in an unsafe manner that
allows a local attacker to overwrite arbitrary files as the user
running a bash1 with input redirection of the "<< EOF" style.
The bash1 package is not used per default in SuSE-distributions.
We're working on a fix (update packages).
- tcsh
The paragraph above about bash version 1 applies to the tcsh as
well, in all versions. The tcsh is not used by SuSE scripts.
______________________________________________________________________________
3) standard appendix:
SuSE runs two security mailing lists to which any interested party may
subscribe:
suse-security@suse.com
- general/linux/SuSE security discussion.
All SuSE security announcements are sent to this list.
To subscribe, send an email to
<suse-security-subscribe@suse.com>.
suse-security-announce@suse.com
- SuSE's announce-only mailing list.
Only SuSE's security annoucements are sent to this list.
To subscribe, send an email to
<suse-security-announce-subscribe@suse.com>.
For general information or the frequently asked questions (faq)
send mail to:
<suse-security-info@suse.com> or
<suse-security-faq@suse.com> respectively.
===============================================
SuSE's security contact is <security@suse.com>.
===============================================
Regards,
Roman Drahtmüller.
- - --
- -
| Roman Drahtmüller <draht@suse.de> // "Caution: Cape does |
SuSE GmbH - Security Phone: // not enable user to fly."
| Nürnberg, Germany +49-911-740530 // (Batman Costume warning label) |
- -
______________________________________________________________________________
The information in this advisory may be distributed or reproduced,
provided that the advisory is not modified in any way.
SuSE GmbH makes no warranties of any kind whatsoever with respect
to the information contained in this security advisory.
Type Bits/KeyID Date User ID
pub 2048/3D25D3D9 1999/03/06 SuSE Security Team <security@suse.de>
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This archive was generated by hypermail 2.1.0
: Mon Jun 04 2001 - 18:25:15 PDT
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