A young programmer found a new way to crash most Linux 2.4 or 2.6 distributions running on an x86 architecture, but a fix is being distributed.
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SUSE has released an updated mc package for SUSE Linux
______________________________________________________________________________
SUSE Security Announcement
Package: mc
Announcement-ID: SuSE-SA:2004:012
Date: Friday, May 14th 2004 16:00 MEST
Affected products: 8.0, 8.1, 8.2, 9.0, 9.1
SuSE Linux Database Server,
SuSE eMail Server III, 3.1
SuSE Linux Enterprise Server 7, 8
SuSE Linux Firewall on CD/Admin host
SuSE Linux Connectivity Server
SuSE Linux Office Server
Vulnerability Type: local privilege escalation
Severity (1-10): 3
SUSE default package: yes
Cross References: CAN-2004-0226
CAN-2004-0231
CAN-2004-0232
Content of this advisory:
1) security vulnerability resolved:
- buffer overflows
- tmp file problems
- format string bugs
problem description, discussion, solution and upgrade information
2) pending vulnerabilities, solutions, workarounds:
- sharutils
- apache2*
- xine*
- sysconfig
- clamav
- exim
- utempter
- busybox
- monit
- ethereal
- kphone
3) standard appendix (further information)
______________________________________________________________________________
______________________________________________________________________________
SUSE Security Announcement
Package: mc
Announcement-ID: SuSE-SA:2004:012
Date: Friday, May 14th 2004 16:00 MEST
Affected products: 8.0, 8.1, 8.2, 9.0, 9.1
SuSE Linux Database Server,
SuSE eMail Server III, 3.1
SuSE Linux Enterprise Server 7, 8
SuSE Linux Firewall on CD/Admin host
SuSE Linux Connectivity Server
SuSE Linux Office Server
Vulnerability Type: local privilege escalation
Severity (1-10): 3
SUSE default package: yes
Cross References: CAN-2004-0226
CAN-2004-0231
CAN-2004-0232
Content of this advisory:
1) security vulnerability resolved:
- buffer overflows
- tmp file problems
- format string bugs
problem description, discussion, solution and upgrade information
2) pending vulnerabilities, solutions, workarounds:
- sharutils
- apache2*
- xine*
- sysconfig
- clamav
- exim
- utempter
- busybox
- monit
- ethereal
- kphone
3) standard appendix (further information)
______________________________________________________________________________
An exim-tls update has been released for Debian GNU/Linux
---------------------------------------------------------------------------
Debian Security Advisory DSA 502-1 security@debian.org
http://www.debian.org/security/ Martin Schulze
May 11th, 2004 http://www.debian.org/security/faq
---------------------------------------------------------------------------
Package : exim-tls
Vulnerability : buffer overflow
Problem-Type : remote
Debian-specific: no
CVE ID : CAN-2004-0399 CAN-2004-0400
Georgi Guninski discovered two stack-based buffer overflows in exim and exim-tls. They can not be exploited with the default configuration from the Debian system, though. The Common Vulnerabilities and Exposures project identifies the following problems that are fixed with this update:
CAN-2004-0399
When "sender_verify = true" is configured in exim.conf a buffer overflow can happen during verification of the sender. This problem is fixed in exim 4.
CAN-2004-0400
When headers_check_syntax is configured in exim.conf a buffer overflow can happen during the header check. This problem does also exist in exim 4.
For the stable distribution (woody) these problems have been fixed in version 3.35-3woody2.
The unstable distribution (sid) does not contain exim-tls anymore. The functionality has been incorporated in the main exim versions which have these problems fixed in version 3.36-11 for exim 3 and in version 4.33-1 for exim 4.
We recommend that you upgrade your exim-tls package.
---------------------------------------------------------------------------
Debian Security Advisory DSA 502-1 security@debian.org
http://www.debian.org/security/ Martin Schulze
May 11th, 2004 http://www.debian.org/security/faq
---------------------------------------------------------------------------
Package : exim-tls
Vulnerability : buffer overflow
Problem-Type : remote
Debian-specific: no
CVE ID : CAN-2004-0399 CAN-2004-0400
Georgi Guninski discovered two stack-based buffer overflows in exim and exim-tls. They can not be exploited with the default configuration from the Debian system, though. The Common Vulnerabilities and Exposures project identifies the following problems that are fixed with this update:
CAN-2004-0399
When "sender_verify = true" is configured in exim.conf a buffer overflow can happen during verification of the sender. This problem is fixed in exim 4.
CAN-2004-0400
When headers_check_syntax is configured in exim.conf a buffer overflow can happen during the header check. This problem does also exist in exim 4.
For the stable distribution (woody) these problems have been fixed in version 3.35-3woody2.
The unstable distribution (sid) does not contain exim-tls anymore. The functionality has been incorporated in the main exim versions which have these problems fixed in version 3.36-11 for exim 3 and in version 4.33-1 for exim 4.
We recommend that you upgrade your exim-tls package.
A kernel update is available for Mandrakelinux
_______________________________________________________________________
Mandrakelinux Security Update Advisory
_______________________________________________________________________
Package name: kernel
Advisory ID: MDKSA-2004:037
Date: April 27th, 2004
Affected versions: 10.0, 9.1, 9.2, Corporate Server 2.1,
Multi Network Firewall 8.2
______________________________________________________________________
Problem Description:
A vulnerability was found in the framebuffer driver of the 2.6 kernel. This is due to incorrect use of the fb_copy_cmap function. (CAN-2004-0229)
A vulnerability has been found in the Linux kernel in the ip_setsockopt() function code. There is an exploitable integer overflow inside the code handling the MCAST_MSFILTER socket option in the IP_MSFILTER_SIZE macro calculation. This issue is present in both 2.4 (2.4.25) and 2.6 kernels. (CAN-2004-0424)
There is a minor issue with the static buffer in 2.4 kernel's panic() function. Although it's a possibly buffer overflow, it most like not exploitable due to the nature of panic(). (CAN-2004-0394)
In do_fork(), if an error occurs after the mm_struct for the child has been allocated, it is never freed. The exit_mm() meant to free it increments the mm_count and this count is never decremented. (For a running process that is exitting, schedule() takes care this; however, the child process being cleaned up is not running.) In the CLONE_VM case, the parent's mm_struct will get an extra mm_count and so it will never be freed. This issue is present in both 2.4 and 2.6 kernels.
The provided packages are patched to fix these vulnerabilities. All users are encouraged to upgrade to these updated kernels.
_______________________________________________________________________
Mandrakelinux Security Update Advisory
_______________________________________________________________________
Package name: kernel
Advisory ID: MDKSA-2004:037
Date: April 27th, 2004
Affected versions: 10.0, 9.1, 9.2, Corporate Server 2.1,
Multi Network Firewall 8.2
______________________________________________________________________
Problem Description:
A vulnerability was found in the framebuffer driver of the 2.6 kernel. This is due to incorrect use of the fb_copy_cmap function. (CAN-2004-0229)
A vulnerability has been found in the Linux kernel in the ip_setsockopt() function code. There is an exploitable integer overflow inside the code handling the MCAST_MSFILTER socket option in the IP_MSFILTER_SIZE macro calculation. This issue is present in both 2.4 (2.4.25) and 2.6 kernels. (CAN-2004-0424)
There is a minor issue with the static buffer in 2.4 kernel's panic() function. Although it's a possibly buffer overflow, it most like not exploitable due to the nature of panic(). (CAN-2004-0394)
In do_fork(), if an error occurs after the mm_struct for the child has been allocated, it is never freed. The exit_mm() meant to free it increments the mm_count and this count is never decremented. (For a running process that is exitting, schedule() takes care this; however, the child process being cleaned up is not running.) In the CLONE_VM case, the parent's mm_struct will get an extra mm_count and so it will never be freed. This issue is present in both 2.4 and 2.6 kernels.
The provided packages are patched to fix these vulnerabilities. All users are encouraged to upgrade to these updated kernels.
Thanks Vermyndax for this one:
Backports.org has updated their backport of Kernel 2.4.24 for Debian GNU/Linux 3.0
Samba 3.0.2, ClamAV 0.65, and Mailman 2.1.4 packages for Debian GNU/Linux 3.0 are now available at Backports.org
Here the apt sources:
Here the apt sources:
# Samba 3.0.2
deb http://www.backports.org/debian stable samba
deb-src http://www.backports.org/debian stable samba
# ClamAV 0.65
deb http://www.backports.org/debian stable clamav
deb-src http://www.backports.org/debian stable clamav
# Mailman 2.1.4
deb http://www.backports.org/debian stable mailman
deb-src http://www.backports.org/debian stable mailman
