bugtraq - TSLSA-2006-0026

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Date: Fri, 12 May 2006 13:50:09 +0200
From: Trustix Security Advisor <tsl@...stix.org>
To: bugtraq@...urityfocus.com
Subject: TSLSA-2006-0026 - kernel


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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

- --------------------------------------------------------------------------
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:
- --------------------------------------------------------------------------
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
- --------------------------------------------------------------------------


Trustix Security Team
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