Linux Advisory Watch - June 20th 2008
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| LinuxSecurity.com Weekly Newsletter |
| June 20th, 2008 Volume 9, Number 25 |
| |
| Editorial Team: Dave Wreski <dwreski@xxxxxxxxxxxxxxxxx> |
| Benjamin D. Thomas <bthomas@xxxxxxxxxxxxxxxxx> |
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Thank you for reading the LinuxSecurity.com weekly security newsletter.
The purpose of this document is to provide our readers with a quick
summary of each week's most relevant Linux security headlines.
This week, advisories were released for libtk-img, typo3, mt-daapd, x11,
util-linux-ng, kernel, perl, openoffice, openssl-blacklist, samba, and
OpenVPN. The distributors include Debian, Gentoo, Mandriva, Red Hat, and
Ubuntu.
---
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---
Review: The Book of Wireless
----------------------------
The Book of Wireless by John Ross is an answer to the problem of
learning about wireless networking. With the wide spread use of Wireless
networks today anyone with a computer should at least know the basics of
wireless. Also, with the wireless networking, users need to know how to
protect themselves from wireless networking attacks.
http://www.linuxsecurity.com/content/view/136167
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April 2008 Open Source Tool of the Month: sudo
----------------------------------------------
This month the editors at LinuxSecurity.com have chosen sudo as the Open
Source Tool of the Month!
http://www.linuxsecurity.com/content/view/135868
--> Take advantage of the LinuxSecurity.com Quick Reference Card! <--
--> http://www.linuxsecurity.com/docs/QuickRefCard.pdf <--
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* EnGarde Secure Community 3.0.19 Now Available! (Apr 15)
-------------------------------------------------------
Guardian Digital is happy to announce the release of EnGarde Secure
Community 3.0.19 (Version 3.0, Release 19). This release includes many
updated packages and bug fixes and some feature enhancements to the
EnGarde Secure Linux Installer and the SELinux policy.
http://www.linuxsecurity.com/content/view/136174
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* Debian: New libtk-img packages fix arbitrary code execution (Jun 19)
--------------------------------------------------------------------
It was discovered that a buffer overflow in the GIF image parsing code
of Tk, a cross-platform graphical toolkit, could lead to denial of
service and potentially the execution of arbitrary code.
http://www.linuxsecurity.com/content/view/138786
* Debian: New typo3 packages fix several vulnerabilities (Jun 12)
---------------------------------------------------------------
Because of a not sufficiently secure default value of the TYPO3
configuration variable fileDenyPattern, authenticated backend users
could upload files that allowed to execute arbitrary code as the
webserver user.
http://www.linuxsecurity.com/content/view/138527
* Debian: New mt-daapd packages fix several vulnerabilities (Jun 12)
------------------------------------------------------------------
Insufficient validation and bounds checking of the Authorization:
HTTP header enables a heap buffer overflow, potentially enabling
the execution of arbitrary code.
http://www.linuxsecurity.com/content/view/138526
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* Gentoo: X.Org X server Multiple vulnerabilities (Jun 19)
--------------------------------------------------------
Multiple vulnerabilities have been discovered in the X.Org X server,
possibly allowing for the remote execution of arbitrary code with root
privileges.
http://www.linuxsecurity.com/content/view/138785
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* Mandriva: Updated x11-server packages fix several (Jun 16)
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An input validation flaw was found in X.org's Security and Record
extensions. A malicious authorized client could exploit the issue to
cause a denial of service (crash) or possibly execute arbitrary code
with root privileges on the X.org server (CVE-2008-1377). An input
validation flaw was found in X.org's MIT-SHM extension. A client
connected to the X.org server could read arbitrary server memory,
resulting in the disclosure of sensitive data of other users of the
X.org server (CVE-2008-1379).
http://www.linuxsecurity.com/content/view/138696
* Mandriva: Updated x11-server packages fix several (Jun 16)
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An input validation flaw was found in X.org's Security and Record
extensions. A malicious authorized client could exploit the issue to
cause a denial of service (crash) or possibly execute arbitrary code
with root privileges on the X.org server (CVE-2008-1377). An input
validation flaw was found in X.org's MIT-SHM extension. A client
connected to the X.org server could read arbitrary server memory,
resulting in the disclosure of sensitive data of other users of the
X.org server (CVE-2008-1379).
http://www.linuxsecurity.com/content/view/138695
* Mandriva: Updated util-linux-ng packages fix log injection (Jun 13)
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Argument injection vulnerability in login (login-utils/login.c) in
util-linux-ng 2.14 and earlier makes it easier for remote attackers to
hide activities by modifying portions of log events. The updated
packages have been patched to fix the issue.
http://www.linuxsecurity.com/content/view/138624
* Mandriva: Updated kernel packages fix security issue (Jun 13)
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A vulnerability was discovered and corrected in the Linux 2.6 kernel:
The asn1 implementation in (a) the Linux kernel 2.4 before 2.4.36.6 and
2.6 before 2.6.25.5, as used in the cifs and ip_nat_snmp_basic modules;
and (b) the gxsnmp package; does not properly validate length values
during decoding of ASN.1 BER data, which allows remote attackers to
cause a denial of service (crash) or execute arbitrary code via (1) a
length greater than the working buffer, which can lead to an
unspecified overflow; (2) an oid length of zero, which can lead to an
off-by-one error; or (3) an indefinite length for a primitive encoding.
http://www.linuxsecurity.com/content/view/138623
* Mandriva: Updated kernel packages fix security issues (Jun 12)
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The Datagram Congestion Control Protocol (DCCP) subsystem in the Linux
kernel 2.6.18, and probably other versions, does not properly check
feature lengths, which might allow remote attackers to execute
arbitrary code, related to an unspecified overflow. (CVE-2008-2358)
http://www.linuxsecurity.com/content/view/138528
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* RedHat: Important: perl security update (Jun 17)
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Updated perl packages that fix a security issue are now available for
Red Hat Application Stack v1. This update has been rated as having
important security impact by the Red Hat Security Response Team.
http://www.linuxsecurity.com/content/view/138736
* RedHat: Important: openoffice.org security update (Jun 12)
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Updated openoffice.org packages to correct a security issue are now
available for Red Hat Enterprise Linux 4 and Red Hat Enterprise Linux
5. This update has been rated as having important security impact by
the Red Hat Security Response Team.
http://www.linuxsecurity.com/content/view/138618
* RedHat: Important: openoffice.org security update (Jun 12)
----------------------------------------------------------
It was discovered that certain libraries in the Red Hat Enterprise
Linux 3 and 4 openoffice.org packages had an insecure relative RPATH
(runtime library search path) set in the ELF (Executable and Linking
Format) header. A local user able to convince another user to run
OpenOffice in an attacker-controlled directory, could run arbitrary
code with the privileges of the victim.
http://www.linuxsecurity.com/content/view/138619
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* Ubuntu: openssl-blacklist update (Jun 18)
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A weakness has been discovered in the random number generator used by
OpenSSL on Debian and Ubuntu systems. As a result of this weakness,
certain encryption keys are much more common than they should be, such
that an attacker could guess the key through a brute-force attack
given minimal knowledge of the system. This particularly affects the
use of encryption keys in OpenSSH, OpenVPN and SSL certificates.
http://www.linuxsecurity.com/content/view/138783
* Ubuntu: Samba vulnerabilities (Jun 17)
---------------------------------------
Samba developers discovered that nmbd could be made to overrun a buffer
during the processing of GETDC logon server requests. When samba is
configured as a Primary or Backup Domain Controller, a remote attacker
could send malicious logon requests and possibly cause a denial of
service. (CVE-2007-4572) Alin Rad Pop of Secunia Research discovered
that Samba did not properly perform bounds checking when parsing SMB
replies. A remote attacker could send crafted SMB packets and execute
arbitrary code. (CVE-2008-1105)
http://www.linuxsecurity.com/content/view/138738
* Ubuntu: X.org vulnerabilities (Jun 13)
---------------------------------------
It was discovered that the MIT-SHM extension of X.org did not correctly
validate the location of memory during an image copy. An authenticated
attacker could exploit this to read arbitrary memory locations within
X, exposing sensitive information. (CVE-2008-1379)
http://www.linuxsecurity.com/content/view/138620
* Ubuntu: openssl-blacklist update (Jun 12)
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USN-612-3 addressed a weakness in OpenSSL certificate and key
generation in OpenVPN by introducing openssl-blacklist to aid in
detecting vulnerable private keys. This update enhances the
openssl-vulnkey tool to check Certificate Signing Requests, accept
input from STDIN, and check moduli without a certificate. It was also
discovered that additional moduli are vulnerable if generated with
OpenSSL 0.9.8g or higher. While it is believed that there are few of
these vulnerable moduli in use, this update includes updated RSA-1024
and RSA-2048 blacklists. RSA-512 blacklists are also included in the
new openssl-blacklist-extra package.
http://www.linuxsecurity.com/content/view/138529
* Ubuntu: OpenVPN regression (Jun 12)
------------------------------------
USN-612-3 addressed a weakness in OpenSSL certificate and key
generation in OpenVPN by adding checks for vulnerable certificates and
keys to OpenVPN. A regression was introduced in OpenVPN when using TLS
with password protected certificates which caused OpenVPN to not start
when used with applications such as NetworkManager.
http://www.linuxsecurity.com/content/view/138530
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