[RHSA-2008:0787-01] Important: kernel security update

[news 28]

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Red Hat Security Advisory

 

Synopsis: Important: kernel security update

Advisory ID: RHSA-2008:0787-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2008-0787.html

Issue date: 2009-01-05

CVE Names: CVE-2007-3848 CVE-2006-4538 CVE-2006-4814

CVE-2007-4308 CVE-2007-2172 CVE-2007-6063

CVE-2007-6206 CVE-2007-6151 CVE-2008-0007

CVE-2008-2136 CVE-2008-3275 CVE-2008-3525

CVE-2008-4210

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1. Summary:

 

Updated kernel packages that fix a number of security issues are now

available for Red Hat Enterprise Linux 2.1 running on 64-bit architectures.

 

This update has been rated as having important security impact by the Red

Hat Security Response Team.

 

2. Relevant releases/architectures:

 

Red Hat Enterprise Linux AS (Advanced Server) version 2.1 - ia64

Red Hat Linux Advanced Workstation 2.1 - ia64

 

3. Description:

 

The kernel packages contain the Linux kernel, the core of any Linux

operating system.

 

These updated packages fix the following security issues:

 

* a flaw was found in the IPv4 forwarding base that allowed a local,

unprivileged user to cause an out-of-bounds access. (CVE-2007-2172,

Important)

 

* a flaw was found in the handling of process death signals. This allowed a

local, unprivileged user to send arbitrary signals to the suid-process

executed by that user. Successful exploitation of this flaw depended on the

structure of the suid-program and its signal handling. (CVE-2007-3848,

Important)

 

* when accessing kernel memory locations, certain Linux kernel drivers

registering a fault handler did not perform required range checks. A local,

unprivileged user could use this flaw to gain read or write access to

arbitrary kernel memory, or possibly cause a kernel crash. (CVE-2008-0007,

Important)

 

* a possible kernel memory leak was found in the Linux kernel Simple

Internet Transition (SIT) INET6 implementation. This could allow a local,

unprivileged user to cause a denial of service. (CVE-2008-2136, Important)

 

* missing capability checks were found in the SBNI WAN driver which could

allow a local, unprivileged user to bypass intended capability

restrictions. (CVE-2008-3525, Important)

 

* a flaw was found in the way files were written using truncate() or

ftruncate(). This could allow a local, unprivileged user to acquire the

privileges of a different group and obtain access to sensitive information.

(CVE-2008-4210, Important)

 

* a flaw was found in the ELF handling on Itanium-based systems. This

triggered a cross-region memory-mapping and allowed a local, unprivileged

user to cause a local denial of service. (CVE-2006-4538, Moderate)

 

* a race condition in the mincore system core allowed a local, unprivileged

user to cause a local denial of service (system hang). (CVE-2006-4814,

Moderate)

 

* a flaw was found in the aacraid SCSI driver. This allowed a local,

unprivileged user to make ioctl calls to the driver which should otherwise

be restricted to privileged users. (CVE-2007-4308, Moderate)

 

* two buffer overflow flaws were found in the Integrated Services Digital

Network (ISDN) subsystem. A local, unprivileged user could use these flaws

to cause a denial of service. (CVE-2007-6063, CVE-2007-6151, Moderate)

 

* a flaw was found in the way core dump files were created. If a local,

unprivileged user could make a root-owned process dump a core file into a

user-writable directory, the user could gain read access to that core file,

potentially compromising sensitive information. (CVE-2007-6206, Moderate)

 

* a deficiency was found in the Linux kernel virtual file system (VFS)

implementation. This could allow a local, unprivileged user to attempt file

creation within deleted directories, possibly causing a local denial of

service. (CVE-2008-3275, Moderate)

 

All users of Red Hat Enterprise Linux 2.1 on 64-bit architectures should

upgrade to these updated packages, which contain backported patches to

resolve these issues.

 

4. Solution:

 

Before applying this update, make sure that all previously-released errata

relevant to your system have been applied.

 

This update is available via Red Hat Network. Details on how to use the Red

Hat Network to apply this update are available at

http://kbase.redhat.com/faq/docs/DOC-11259

 

5. Bugs fixed (http://bugzilla.redhat.com/):

 

250429 - CVE-2007-2172 fib_semantics.c out of bounds access vulnerability

250972 - CVE-2007-3848 Privilege escalation via PR_SET_PDEATHSIG

252309 - CVE-2007-4308 kernel: Missing ioctl() permission checks in aacraid driver

289151 - CVE-2006-4538 kernel: Local DoS with corrupted ELF

306971 - CVE-2006-4814 kernel Race condition in mincore can cause "ps -ef" to hang

392101 - CVE-2007-6063 Linux Kernel isdn_net_setcfg buffer overflow

396861 - CVE-2007-6206 Issue with core dump owner

425111 - CVE-2007-6151 I4L: fix isdn_ioctl memory issue

428961 - CVE-2008-0007 kernel: insufficient range checks in fault handlers with mremap

446031 - CVE-2008-2136 kernel: sit memory leak

457858 - CVE-2008-3275 Linux kernel local filesystem DoS

460401 - CVE-2008-3525 kernel: missing capability checks in sbni_ioctl()

 

6. Package List:

 

Red Hat Enterprise Linux AS (Advanced Server) version 2.1 :

 

Source:

ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/kernel-2.4.18-e.67.src.rpm

 

ia64:

kernel-2.4.18-e.67.ia64.rpm

kernel-doc-2.4.18-e.67.ia64.rpm

kernel-smp-2.4.18-e.67.ia64.rpm

kernel-source-2.4.18-e.67.ia64.rpm

 

Red Hat Linux Advanced Workstation 2.1:

 

Source:

ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/kernel-2.4.18-e.67.src.rpm

 

ia64:

kernel-2.4.18-e.67.ia64.rpm

kernel-doc-2.4.18-e.67.ia64.rpm

kernel-smp-2.4.18-e.67.ia64.rpm

kernel-source-2.4.18-e.67.ia64.rpm

 

These packages are GPG signed by Red Hat for security. Our key and

details on how to verify the signature are available from

https://www.redhat.com/security/team/key/#package

 

7. References:

 

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3848

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4538

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4814

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4308

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2172

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6063

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6206

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6151

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0007

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2136

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3275

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3525

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4210

http://www.redhat.com/security/updates/classification/#important

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://www.redhat.com/security/team/contact/

 

Copyright 2009 Red Hat, Inc.

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