Debian GNU/Linux Advisories: linux-kernel-i386, linux-kernel-alpha, atari800

Debian Security Advisory DSA 358-1	[email protected]
http://www.debian.org/security/	Matt Zimmerman
July 31st, 2003	http://www.debian.org/security/faq

Package	:	linux-kernel-i386, linux-kernel-alpha
Vulnerability	:	several
Problem-Type	:	local, remote
Debian-specific	:	no
CVE Ids	:	CAN-2003-0461, CAN-2003-0462, CAN-2003-0476, CAN-2003-0501, CAN-2003-0550, CAN-2003-0551, CAN-2003-0552, CAN-2003-0018, CAN-2003-0619

A number of vulnerabilities have been discovered in the Linux
kernel.

– CAN-2003-0461: /proc/tty/driver/serial in Linux 2.4.x reveals
the exact number of characters used in serial links, which could
allow local users to obtain potentially sensitive information such
as the length of passwords. This bug has been fixed by restricting
access to /proc/tty/driver/serial.
– CAN-2003-0462: A race condition in the way env_start and
env_end pointers are initialized in the execve system call and used
in fs/proc/base.c on Linux 2.4 allows local users to cause a denial
of service (crash).
– CAN-2003-0476: The execve system call in Linux 2.4.x records
the file descriptor of the executable process in the file table of
the calling process, which allows local users to gain read access
to restricted file descriptors.
– CAN-2003-0501: The /proc filesystem in Linux allows local
users to obtain sensitive information by opening various entries in
/proc/self before executing a setuid program, which causes the
program to fail to change the ownership and permissions of those
entries.
– CAN-2003-0550: The STP protocol, as enabled in Linux 2.4.x,
does not provide sufficient security by design, which allows
attackers to modify the bridge topology. This bug has been fixed by
disabling STP by default.
– CAN-2003-0551: The STP protocol, as enabled in Linux 2.4.x,
does not provide sufficient security by design, which allows
attackers to modify the bridge topology.
– CAN-2003-0552: Linux 2.4.x allows remote attackers to spoof
the bridge forwarding table via forged packets whose source
addresses are the same as the target.
– CAN-2003-0018: Linux kernel 2.4.10 through 2.4.21-pre4 does
not properly handle the O_DIRECT feature, which allows local
attackers with write privileges to read portions of previously
deleted files, or cause file system corruption. This bug has been
fixed by disabling O_DIRECT.
– CAN-2003-0619: Integer signedness error in the decode_fh
function of nfs3xdr.c in Linux kernel before 2.4.21 allows remote
attackers to cause a denial of service (kernel panic) via a
negative size value within XDR data of an NFSv3 procedure
call.

This advisory covers only the i386 and alpha architectures.
Other architectures will be covered by separate advisories.

For the stable distribution (woody) on the i386 architecture,
these problems have been fixed in kernel-source-2.4.18 version
2.4.18-11, kernel-image-2.4.18-1-i386 version 2.4.18-9, and
kernel-image-2.4.18-i386bf version 2.4.18-5woody2.

For the stable distribution (woody) on the alpha architecture,
these problems have been fixed in kernel-source-2.4.18 version
2.4.18-11 and kernel-image-2.4.18-1-alpha version 2.4.18-8.

For the unstable distribution (sid) these problems are fixed in
kernel-source-2.4.20 version 2.4.20-9.

We recommend that you update your kernel packages.

If you are using the kernel installed by the installation system
when the “bf24” option is selected (for a 2.4.x kernel), you should
install the kernel-image-2.4.18-bf2.4 package. If you installed a
different kernel-image package after installation, you should
install the corresponding 2.4.18-1 kernel. You may use the table
below as a guide.

| If “uname -r” shows: | Install this package:

| 2.4.18-bf2.4         | kernel-image-2.4.18-bf2.4
| 2.4.18-386           | kernel-image-2.4.18-1-386
| 2.4.18-586tsc        | kernel-image-2.4.18-1-586tsc
| 2.4.18-686           | kernel-image-2.4.18-1-686
| 2.4.18-686-smp       | kernel-image-2.4.18-1-686-smp
| 2.4.18-k6            | kernel-image-2.4.18-1-k6
| 2.4.18-k7            | kernel-image-2.4.18-1-k7

NOTE: that this kernel is binary compatible with the previous
kernel security update, but not binary compatible with the
corresponding kernel included in Debian 3.0r1. If you have not
already applied the previous security update
(kernel-image-2.4.18-bf2.4 version 2.4.18-5woody1 or any of the
2.4.18-1-* kernels), then any custom modules will need to be
rebuilt in order to work with the new kernel. New PCMCIA modules
are provided for all of the above kernels.

NOTE: A system reboot will be required immediately after the
upgrade in order to replace the running kernel. Remember to read
carefully and follow the instructions given during the kernel
upgrade process.

Upgrade Instructions

wget url

will fetch the file for you
dpkg -i file.deb

will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update

will update the internal database apt-get upgrade

will install corrected packages

You may use an automated update by adding the resources from the
footer to the proper configuration.

Debian GNU/Linux 3.0 alias woody

Source archives:

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-i386/kernel-image-2.4.18-1-i386_2.4.18-9.dsc

Size/MD5 checksum: 1323 a52f99a769d129819d6c8ada3c5045c6

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-i386/kernel-image-2.4.18-1-i386_2.4.18-9.tar.gz

Size/MD5 checksum: 69606 e21b5ef20e4c7af4e455933df9ee4166

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-i386bf/kernel-image-2.4.18-i386bf_2.4.18-5woody2.dsc

Size/MD5 checksum: 654 ca1be1a797c9e30e263374955dd77b0f

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-i386bf/kernel-image-2.4.18-i386bf_2.4.18-5woody2.tar.gz

Size/MD5 checksum: 25822 602dd83e5607dd6b6ee5cf86e16790e5

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-alpha/kernel-image-2.4.18-1-alpha_2.4.18-8.dsc

Size/MD5 checksum: 872 fcc88e846f61f02cf4fa27edf702a4db

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-alpha/kernel-image-2.4.18-1-alpha_2.4.18-8.tar.gz

Size/MD5 checksum: 24061 beeb0146a914281de11f7439179956c0

http://security.debian.org/pool/updates/main/k/kernel-source-2.4.18/kernel-source-2.4.18_2.4.18-11.dsc

Size/MD5 checksum: 798 cf43f98322e7a024b16e06dc1f0f83eb

http://security.debian.org/pool/updates/main/k/kernel-source-2.4.18/kernel-source-2.4.18_2.4.18-11.diff.gz

Size/MD5 checksum: 66571 b19259c1b01f075a457b58610ee3f8b8

http://security.debian.org/pool/updates/main/k/kernel-source-2.4.18/kernel-source-2.4.18_2.4.18.orig.tar.gz

Size/MD5 checksum: 29818323 24b4c45a04a23eb4ce465eb326a6ddf2

Intel IA-32 architecture:

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-i386/kernel-headers-2.4.18-1_2.4.18-9_i386.deb

Size/MD5 checksum: 3397958 767768d092247730a5506c97f4f6c6c7

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-i386/kernel-headers-2.4.18-1-386_2.4.18-9_i386.deb

Size/MD5 checksum: 3487150 3c296013374ffefcbdb0de781c6fd5ce

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-i386/kernel-headers-2.4.18-1-586tsc_2.4.18-9_i386.deb

Size/MD5 checksum: 3487900 7b262d0e0204b184aaaf1e13f7702907

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-i386/kernel-headers-2.4.18-1-686_2.4.18-9_i386.deb

Size/MD5 checksum: 3488158 f51ebc4199c4813bd48ea0992acd6f93

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-i386/kernel-headers-2.4.18-1-686-smp_2.4.18-9_i386.deb

Size/MD5 checksum: 3489144 352f0331aaa6deb1775228535f88f282

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-i386/kernel-headers-2.4.18-1-k6_2.4.18-9_i386.deb

Size/MD5 checksum: 3487710 ea9a4d1feb084a5c696137b6bd34462e

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-i386/kernel-headers-2.4.18-1-k7_2.4.18-9_i386.deb

Size/MD5 checksum: 3487954 21e564dd78bedb789815bd52194d3ff4

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-i386/kernel-image-2.4.18-1-386_2.4.18-9_i386.deb

Size/MD5 checksum: 8797484 bbcf9f3824f23ec474ac7759fb854cc3

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-i386/kernel-image-2.4.18-1-586tsc_2.4.18-9_i386.deb

Size/MD5 checksum: 8704368 290e78d252a322a787c561e03b23cc15

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-i386/kernel-image-2.4.18-1-686_2.4.18-9_i386.deb

Size/MD5 checksum: 8702946 4087ed6ff51dd349071dff3eeee77b15

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-i386/kernel-image-2.4.18-1-686-smp_2.4.18-9_i386.deb

Size/MD5 checksum: 8959820 77d9fc68ae40ee66ee08227adfd2a68d

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-i386/kernel-image-2.4.18-1-k6_2.4.18-9_i386.deb

Size/MD5 checksum: 8661146 3c50481605daabde929aad5340fa9178

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-i386/kernel-image-2.4.18-1-k7_2.4.18-9_i386.deb

Size/MD5 checksum: 8862884 2ad9fef313514a07f876eef1a6b982d8

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-i386/kernel-pcmcia-modules-2.4.18-1-386_2.4.18-9_i386.deb

Size/MD5 checksum: 228132 83b331acd31e5fc0de4b8da9fa9cf8e3

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-i386/kernel-pcmcia-modules-2.4.18-1-586tsc_2.4.18-9_i386.deb

Size/MD5 checksum: 227688 6b66326ceae1d564ea51bbeeb7e3d919

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-i386/kernel-pcmcia-modules-2.4.18-1-686_2.4.18-9_i386.deb

Size/MD5 checksum: 227144 fde12cbb05c113ae7dd3ffd4e2c552ff

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-i386/kernel-pcmcia-modules-2.4.18-1-686-smp_2.4.18-9_i386.deb

Size/MD5 checksum: 230818 db88f6cb1cf65c7435e6392e8bc3504d

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-i386/kernel-pcmcia-modules-2.4.18-1-k6_2.4.18-9_i386.deb

Size/MD5 checksum: 226792 72bfd4693f7bfaa939f7896258de33da

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-i386/kernel-pcmcia-modules-2.4.18-1-k7_2.4.18-9_i386.deb

Size/MD5 checksum: 230044 b27f6542766c03879409bba79bb716a8

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-i386bf/kernel-headers-2.4.18-bf2.4_2.4.18-5woody2_i386.deb

Size/MD5 checksum: 3395196 a992ad938bd5cbeabfc22a59871965c4

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-i386bf/kernel-image-2.4.18-bf2.4_2.4.18-5woody2_i386.deb

Size/MD5 checksum: 6424624 3c1918455da20eb109cf016bead1fbd2

Alpha architecture:

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-alpha/kernel-headers-2.4.18-1_2.4.18-8_alpha.deb

Size/MD5 checksum: 3333278 8477964689288e4b74a26ee7250eb2b8

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-alpha/kernel-headers-2.4.18-1-generic_2.4.18-8_alpha.deb

Size/MD5 checksum: 3474414 af8fce811647795e67f54f44b2721e71

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-alpha/kernel-headers-2.4.18-1-smp_2.4.18-8_alpha.deb

Size/MD5 checksum: 3476688 e7f09e05a0b5522c662e745e43fd6724

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-alpha/kernel-image-2.4.18-1-generic_2.4.18-8_alpha.deb

Size/MD5 checksum: 12425942 e95bbf7ede7553c6e514b8b153aa2e27

http://security.debian.org/pool/updates/main/k/kernel-image-2.4.18-1-alpha/kernel-image-2.4.18-1-smp_2.4.18-8_alpha.deb

Size/MD5 checksum: 12799024 fbbbfb33c90c0816b01dba537e85df5e

Architecture independent components:

http://security.debian.org/pool/updates/main/k/kernel-source-2.4.18/kernel-doc-2.4.18_2.4.18-11_all.deb

Size/MD5 checksum: 1710260 16dd8f969b5a174083966d806226f27c

http://security.debian.org/pool/updates/main/k/kernel-source-2.4.18/kernel-source-2.4.18_2.4.18-11_all.deb

Size/MD5 checksum: 23886666 2bb0bcc7083d69962ac9875541b15d06

These files will probably be moved into the stable distribution
on its next revision.

For apt-get: deb http://security.debian.org/
stable/updates main For dpkg-ftp: ftp://security.debian.org/debian-security
dists/stable/updates/main Mailing list: [email protected]
Package info: `apt-cache show <pkg>’ and http://packages.debian.org/<pkg>

Debian Security Advisory DSA 359-1	[email protected]
http://www.debian.org/security/	Matt Zimmerman
July 31st, 2003	http://www.debian.org/security/faq

Package	:	atari800
Vulnerability	:	buffer overflows
Problem-Type	:	local
Debian-specific	:	no
CVE Ids	:	CAN-2003-0630

Steve Kemp discovered multiple buffer overflows in atari800, an
Atari emulator. In order to directly access graphics hardware, one
of the affected programs is setuid root. A local attacker could
exploit this vulnerability to gain root privileges.

For the current stable distribution (woody) this problem has
been fixed in version 1.2.2-1woody2.

For the unstable distribution (sid) this problem will be fixed
soon. Refer to Debian bug #203707.

We recommend that you update your atari800 package.