Date: Fri, 12 May 2006 13:50:09 +0200
From: Trustix Security Advisor <tsl@trustix.org.>
To: bugtraq@securityfocus.com
Subject: TSLSA-2006-0026 - kernel
Message-ID: <20060512115009.GA23114@tsunami.trustix.net.>
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Trustix Secure Linux Security Advisory #2006-0026
Package names: kernel
Summary: Multiple vulnerabilities
Date: 2006-05-12
Affected versions: Trustix Secure Linux 3.0
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Package description:
kernel
The kernel package contains the Linux kernel (vmlinuz), the core of
your Trustix Secure Linux operating system. The kernel handles the
basic functions of the operating system: memory allocation, process
allocation, device input and output, etc.
Problem description:
kernel < TSL 3.0 >
- New Upstream.
- SECURITY Fix: An error in the Stream Control Transmission Protocol
(SCTP) code that uses incorrect state table entries when certain
ECNE chunks are received in CLOSED state, could be exploited by
attackers to cause a kernel panic via a specially crafted packet.
- An error exist when handling incoming IP-fragmented SCTP control
chunks, which could be exploited by attackers to cause a kernel
panic via a specially crafted packet.
- Linux SCTP (lksctp) allows remote attackers to cause a denial of
service (infinite recursion and crash) via a packet that contains
two or more DATA fragments, which causes an skb pointer to refer
back to itself when the full message is reassembled, leading to
infinite recursion in the sctp_skb_pull function
- Linux SCTP (lksctp) allows remote attackers to cause a denial of
service (deadlock) via a large number of small messages to a receiver
application that cannot process the messages quickly enough, which
leads to "spillover of the receive buffer."
- A vulnerability has been identified due to an input
validation error when processing arguments containing backslash
("\\") characters passed to certain commands (e.g. "cd"),
which could be exploited by authenticated attackers to escape
chroot restrictions for a CIFS or SMBFS mounted filesystem.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the names CVE-2006-2271, CVE-2006-2272, CVE-2006-2274,
CVE-2006-2275 and CVE-2006-1864 to these issues.
Action:
We recommend that all systems with this package installed be upgraded.
Please note that if you do not need the functionality provided by this
package, you may want to remove it from your system.
Location:
All Trustix Secure Linux updates are available from
<URI:http://http.trustix.org/pub/trustix/updates/>;
<URI:ftp://ftp.trustix.org/pub/trustix/updates/>;
About Trustix Secure Linux:
Trustix Secure Linux is a small Linux distribution for servers. With focus
on security and stability, the system is painlessly kept safe and up to
date from day one using swup, the automated software updater.
Automatic updates:
Users of the SWUP tool can enjoy having updates automatically
installed using 'swup --upgrade'.
Questions?
Check out our mailing lists:
<URI:http://www.trustix.org/support/>;
Verification:
This advisory along with all Trustix packages are signed with the
TSL sign key.
This key is available from:
<URI:http://www.trustix.org/TSL-SIGN-KEY>;
The advisory itself is available from the errata pages at
<URI:http://www.trustix.org/errata/trustix-2.2/>; and
<URI:http://www.trustix.org/errata/trustix-3.0/>;
or directly at
<URI:http://www.trustix.org/errata/2006/0026/>;
MD5sums of the packages:
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9f798a0d9d3063d3fbd94119db77f40b 3.0/rpms/kernel-2.6.16.15-1tr.i586.rpm
cab3a8f7fbb1c59440a78936f3ec12b9 3.0/rpms/kernel-doc-2.6.16.15-1tr.i586.rpm
fe373ad5547b0973b49151bc5966d517 3.0/rpms/kernel-headers-2.6.16.15-1tr.i586.rpm
4dc3b1de6016983425b017045b9c218c 3.0/rpms/kernel-smp-2.6.16.15-1tr.i586.rpm
f1f8e1a0250f3a54025de929361485b0 3.0/rpms/kernel-smp-headers-2.6.16.15-1tr.i586.rpm
7430924bf1455b18a4fe661142e64758 3.0/rpms/kernel-source-2.6.16.15-1tr.i586.rpm
da6d9d50cf84d9d309006a7e38549ff0 3.0/rpms/kernel-utils-2.6.16.15-1tr.i586.rpm
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Trustix Security Team
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