![[LWN Logo]](/images/lwn.banner.gif)
To: suse-security-announce@suse.com
Date: Fri, 26 May 2000 07:58:04 +0200 (MEST)
From: thomas@suse.de (Thomas Biege)
Subject: [suse-security-announce] SuSE Security Announcement: gdm
-----BEGIN PGP SIGNED MESSAGE-----
______________________________________________________________________________
SuSE Security Announcement
Package: gdm <= 2.0beta4-25
Date: Wed May 24 08:35:39 CET 2000
Affected SuSE versions: 6.2-6.4
Vulnerability Type: remote compromise
SuSE default package: no
Other affected systems: all linux systems using gdm <= 2.0beta4
______________________________________________________________________________
A security hole was discovered in the package mentioned above.
Please update it as soon as possible or disable the service if you are using
this software on your SuSE Linux installation(s).
Other Linux distributions or operating systems might be affected as
well, please contact your vendor for information about this issue.
Please note that we provide this information on an "as-is" basis only.
There is no warranty whatsoever and no liability for any direct, indirect or
incidental damage arising from this information or the installation of
the update package.
_____________________________________________________________________________
1. Problem Description
The GNOME package includes a xdm replacement called gdm for handling
graphical console and network logins.
The gdm code, that process' logins over the network, could be tricked
into writing data from the network right into the stack. This condition
exists while gdm is running with root privileges and before the user is
authenticated.
2. Impact
An remote adversary could crash gdm or execute his own code, which
leads to root compromise of the system running gdm.
3. Solution
By default gdm doesn't accept login connection from the network.
Older SuSE releases, which include gdm 1.x, allow network logins
by default but aren't vulnerable by this bug.
If you need the network login feature of gdm, update the package
from our FTP server, please.
______________________________________________________________________________
Please verify these md5 checksums of the updates before installing:
(For SuSE 6.0, please use the 6.1 updates)
AXP:
ffb656afe38ee6e5c04789f8fce8b1a8 ftp://ftp.suse.com/pub/suse/axp/update/6.3/gnm2/gdm-2.0beta4-74.alpha.rpm
f5c7bf9b8fd133e74481ecd6c0d5678e ftp://ftp.suse.com/pub/suse/axp/update/6.3/zq1/gdm-2.0beta4-74.src.rpm
928d262fd9e8f1ff40e6f84b560daf7b ftp://ftp.suse.com/pub/suse/axp/update/6.4/gnm2/gdm-2.0beta4-74.alpha.rpm
6f8a0cc01b9b37f5d6b7bf93b138afb2 ftp://ftp.suse.com/pub/suse/axp/update/6.4/zq1/gdm-2.0beta4-74.src.rpm
i386:
8a8adfa55587b1db0cf9816e7d8839c6 ftp://ftp.suse.com/pub/suse/i386/update/6.2/gnm2/gdm-2.0beta4-72.i386.rpm
fea8fda701692bea4fb658edc7a504ea ftp://ftp.suse.com/pub/suse/i386/update/6.2/zq1/gdm-2.0beta4-72.src.rpm
be26d14f8693d50002a5462c28a45d5a ftp://ftp.suse.com/pub/suse/i386/update/6.3/gnm2/gdm-2.0beta4-72.i386.rpm
bcc226af12ce171d4aa41c6d490d2b8f ftp://ftp.suse.com/pub/suse/i386/update/6.3/zq1/gdm-2.0beta4-72.src.rpm
372583d0633d4d0115e6f3bc8397cf16 ftp://ftp.suse.com/pub/suse/i386/update/6.4/gnm2/gdm-2.0beta4-72.i386.rpm
33896dd68321aa45c837da34547debf5 ftp://ftp.suse.com/pub/suse/i386/update/6.4/zq1/gdm-2.0beta4-72.src.rpm
______________________________________________________________________________
You can find updates on our ftp-Server:
ftp://ftp.suse.com/pub/suse/i386/update for Intel processors
ftp://ftp.suse.com/pub/suse/axp/update for Alpha processors
or try the following web pages for a list of mirrors:
http://www.suse.de/ftp.html
http://www.suse.com/ftp_new.html
Our webpage for patches:
http://www.suse.de/patches/index.html
Our webpage for security announcements:
http://www.suse.de/security
If you want to report vulnerabilities, please contact
security@suse.de
______________________________________________________________________________
SuSE has got two free security mailing list services to which any
interested party may subscribe:
suse-security@suse.com - moderated and for general/linux/SuSE
security discussions. All SuSE security
announcements are sent to this list.
suse-security-announce@suse.com - SuSE's announce-only mailing list.
Only SuSE's security annoucements are sent
to this list.
To subscribe to the list, send a message to:
<suse-security-subscribe@suse.com>
To remove your address from the list, send a message to:
<suse-security-unsubscribe@suse.com>
Send mail to the following for info and FAQ for this list:
<suse-security-info@suse.com>
<suse-security-faq@suse.com>
_____________________________________________________________________________
This information is provided freely to everyone interested and may
be redistributed provided that it is not altered in any way.
Type Bits/KeyID Date User ID
pub 2048/3D25D3D9 1999/03/06 SuSE Security Team <security@suse.de>
- ------BEGIN PGP PUBLIC KEY BLOCK-----
Version: 2.6.3i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=pIeS
- ------END PGP PUBLIC KEY BLOCK-----
-----BEGIN PGP SIGNATURE-----
Version: 2.6.3i
Charset: noconv
iQEVAwUBOS4SAney5gA9JdPZAQEIOgf/QimA7HRqpapj+tZ3gleMjKtSVD9F9L/t
dB8whPqBpebxUpRN8mgonaeRZmFVqbos5ll4mk2Ua20XDvuE/aQT2xxvQ3dT5ubV
u+BlF+3HcxxOLYw0d5mDVGUQjSlArhklhiJ1Mc1ibM8Xf24LV8i6D36XAWSuv3U+
WiVRk9P1IXmlgiJC9r3j1uqSAqHNpzLQwcRHHxSPBjlJJHYOHr0CfXpLhKm3KJjT
rGwMSqs/hHQ+In7VtpR/EzLBUlZ3UljLNoPRO4kLnmBoYv2qDMIcYDN8TMRG8H3D
AtAReOF67M10dLj0J75n4I2zBXnGH0VtNBkUUpvfquOoiijr/mWTiw==
=izc5
-----END PGP SIGNATURE-----
--
To unsubscribe, e-mail: suse-security-announce-unsubscribe@suse.com
For additional commands, e-mail: suse-security-announce-help@suse.com