Updated postfix packages that include a security fix and two other bug fixes are now available for Red Hat Enterprise Linux 4. This update has been rated as having low security impact by the Red Hat Security Response Team. - --------------------------------------------------------------------- Red Hat Security Advisory Synopsis: Low: postfix security update Advisory ID: RHSA-2005:152-01 Advisory URL: https://access.redhat.com/errata/RHSA-2005:152.html Issue date: 2005-03-16 Updated on: 2005-03-16 Product: Red Hat Enterprise Linux CVE Names: CAN-2005-0337 - ---------------------------------------------------------------------1. Summary: Updated postfix packages that include a security fix and two other bug fixes are now available for Red Hat Enterprise Linux 4. This update has been rated as having low security impact by the Red Hat Security Response Team 2. Relevant releases/architectures: Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64 Red Hat Enterprise Linux Desktop version 4 - i386, x86_64 Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64 Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64 3. Problem description: Postfix is a Mail Transport Agent (MTA), supporting LDAP, SMTP AUTH (SASL), and TLS. A flaw was found in the ipv6 patch used with Postfix. When the file /proc/net/if_inet6 is not available and permit_mx_backup is enabled in smtpd_recipient_restrictions, this flaw could allow remote attackers to bypass e-mail restrictions and perform mail relaying by sending mail to an IPv6 hostname. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2005-0337 to this issue. These updated packages also fix the following problems: - - wrong permissions on doc directory - - segfault when gethostbyname or gethostbyaddr fails All users of postfix should upgrade to these updated packages, which contain patcheswhich resolve these issues. 4. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. To update all RPMs for your particular architecture, run: rpm -Fvh [filenames] where [filenames] is a list of the RPMs you wish to upgrade. Only those RPMs which are currently installed will be updated. Those RPMs which are not installed but included in the list will not be updated. Note that you can also use wildcards (*.rpm) if your current directory *only* contains the desired RPMs. Please note that this update is also available via Red Hat Network. Many people find this an easier way to apply updates. To use Red Hat Network, launch the Red Hat Update Agent with the following command: up2date This will start an interactive process that will result in the appropriate RPMs being upgraded on your system. If up2date fails to connect to Red Hat Network due to SSL Certificate Errors, you need to install a version of the up2date client with an updated certificate. The latest version of up2date is available from the Red Hat FTP site and may also be downloaded directly from the RHN website: https://access.redhat.com 5. Bug IDs fixed (http://bugzilla.redhat.com/): 146732 - CAN-2005-0337 open relay bug in postfix ipv6 patch 147280 - Permissions on doc directory is wrong 139983 - newaliases segfaults when gethostbyname or gethostbyaddr fails 6. RPMs required: Red Hat Enterprise Linux AS version 4: SRPMS: 6cb38ee879fcbf2c2790890e49dd1a4b postfix-2.1.5-4.2.RHEL4.src.rpm i386: 986882612b24197ca6a962e2e863dba7 postfix-2.1.5-4.2.RHEL4.i386.rpm 1dc80db9e883731d25f3783fa47dccd8 postfix-pflogsumm-2.1.5-4.2.RHEL4.i386.rpm ia64: 01c0c0432414d34d774b6d118e8fd93c postfix-2.1.5-4.2.RHEL4.ia64.rpm 3a07219a527596c4719cb971aa54aa38 postfix-pflogsumm-2.1.5-4.2.RHEL4.ia64.rpm ppc: 6eb2d7a742a0684b0031ea30843fd8ac postfix-2.1.5-4.2.RHEL4.ppc.rpm f15d4f4e2823befcbdf5e913182c592a postfix-pflogsumm-2.1.5-4.2.RHEL4.ppc.rpm s390: 915feb7be6d01186fb61d1664d5714a7 postfix-2.1.5-4.2.RHEL4.s390.rpm 96202b25b1775f7fd1a96077354ebf72 postfix-pflogsumm-2.1.5-4.2.RHEL4.s390.rpm s390x: fbb35e5cb15347ffaa68cdad954683d0 postfix-2.1.5-4.2.RHEL4.s390x.rpm aeb220b7e428f560e6cad87f367fd8ff postfix-pflogsumm-2.1.5-4.2.RHEL4.s390x.rpm x86_64: 365c57d129da99b56ba8d54b73539c89 postfix-2.1.5-4.2.RHEL4.x86_64.rpm 3a39dc000dd43d57144da89450accfbe postfix-pflogsumm-2.1.5-4.2.RHEL4.x86_64.rpm Red Hat Enterprise Linux Desktop version 4: SRPMS: 6cb38ee879fcbf2c2790890e49dd1a4b postfix-2.1.5-4.2.RHEL4.src.rpm i386: 986882612b24197ca6a962e2e863dba7 postfix-2.1.5-4.2.RHEL4.i386.rpm 1dc80db9e883731d25f3783fa47dccd8 postfix-pflogsumm-2.1.5-4.2.RHEL4.i386.rpm x86_64: 365c57d129da99b56ba8d54b73539c89 postfix-2.1.5-4.2.RHEL4.x86_64.rpm 3a39dc000dd43d57144da89450accfbe postfix-pflogsumm-2.1.5-4.2.RHEL4.x86_64.rpm Red Hat Enterprise Linux ES version 4: SRPMS: 6cb38ee879fcbf2c2790890e49dd1a4b postfix-2.1.5-4.2.RHEL4.src.rpm i386: 986882612b24197ca6a962e2e863dba7 postfix-2.1.5-4.2.RHEL4.i386.rpm 1dc80db9e883731d25f3783fa47dccd8 postfix-pflogsumm-2.1.5-4.2.RHEL4.i386.rpm ia64: 01c0c0432414d34d774b6d118e8fd93c postfix-2.1.5-4.2.RHEL4.ia64.rpm 3a07219a527596c4719cb971aa54aa38 postfix-pflogsumm-2.1.5-4.2.RHEL4.ia64.rpm x86_64: 365c57d129da99b56ba8d54b73539c89 postfix-2.1.5-4.2.RHEL4.x86_64.rpm 3a39dc000dd43d57144da89450accfbe postfix-pflogsumm-2.1.5-4.2.RHEL4.x86_64.rpm Red Hat Enterprise Linux WS version 4: SRPMS: 6cb38ee879fcbf2c2790890e49dd1a4b postfix-2.1.5-4.2.RHEL4.src.rpm i386: 986882612b24197ca6a962e2e863dba7 postfix-2.1.5-4.2.RHEL4.i386.rpm 1dc80db9e883731d25f3783fa47dccd8 postfix-pflogsumm-2.1.5-4.2.RHEL4.i386.rpm ia64: 01c0c0432414d34d774b6d118e8fd93c postfix-2.1.5-4.2.RHEL4.ia64.rpm 3a07219a527596c4719cb971aa54aa38 postfix-pflogsumm-2.1.5-4.2.RHEL4.ia64.rpm x86_64: 365c57d129da99b56ba8d54b73539c89 postfix-2.1.5-4.2.RHEL4.x86_64.rpm 3a39dc000dd43d57144da89450accfbe postfix-pflogsumm-2.1.5-4.2.RHEL4.x86_64.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://access.redhat.com/security/team/key#package 7. References: https://www.cve.org/CVERecord?id=CVE-CAN-2005-0337 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact Copyright 2005 Red Hat, Inc. . Critical postfix upgrade for CentOS released to fix a minor security issue. Ensure your systems remain protected with the newest updates.. Postfix Update, Red Hat Security, Email Protection, Mail Transport Agent. . Severity: Low. LinuxSecurity.com Team
These vulnerabilities could potentially be exploited by a remote mail relay to gain the privileges of the ssmtp process (including potentially root).. Debian Security Advisory DSA 485-1
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