+------------------------------------------------------------------------+ | LinuxSecurity.com Weekly Newsletter | | June 20th, 2008 Volume 9, Number 25 | | | | Editorial Team: Dave Wreski <dwreski@xxxxxxxxxxxxxxxxx> | | Benjamin D. Thomas <bthomas@xxxxxxxxxxxxxxxxx> | +------------------------------------------------------------------------+ 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. --- >> Linux+DVD Magazine << Our magazine is read by professional network and database administrators, system programmers, webmasters and all those who believe in the power of Open Source software. The majority of our readers is between 15 and 40 years old. They are interested in current news from the Linux world, upcoming projects etc. In each issue you can find information concerning typical use of Linux: safety, databases, multimedia, scientific tools, entertainment, programming, e-mail, news and desktop environments. http://www.linuxsecurity.com/ads/adclick.php?bannerid=26 --- 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 --- 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 <-- -------------------------------------------------------------------------- * 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 -------------------------------------------------------------------------- * 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 -------------------------------------------------------------------------- * 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 -------------------------------------------------------------------------- * Mandriva: Updated x11-server packages fix several (Jun 16) ---------------------------------------------------------- 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) ---------------------------------------------------------- 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) ------------------------------------------------------------------- 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) ------------------------------------------------------------- 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) -------------------------------------------------------------- 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 -------------------------------------------------------------------------- * RedHat: Important: perl security update (Jun 17) ------------------------------------------------ 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) ---------------------------------------------------------- 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 -------------------------------------------------------------------------- * Ubuntu: openssl-blacklist update (Jun 18) ------------------------------------------ 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) ------------------------------------------ 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 ------------------------------------------------------------------------ Distributed by: Guardian Digital, Inc. 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