Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2015.1928 Moderate: mailman security and bug fix update 23 July 2015 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: mailman Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 6 Red Hat Enterprise Linux WS/Desktop 6 Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2015-2775 CVE-2002-0389 Reference: ESB-2015.1630 ESB-2015.0852 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2015-1417.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: mailman security and bug fix update Advisory ID: RHSA-2015:1417-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-1417.html Issue date: 2015-07-22 Updated on: 2015-03-16 CVE Names: CVE-2002-0389 CVE-2015-2775 ===================================================================== 1. Summary: Updated mailman packages that fix two security issues and several bugs are now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 3. Description: Mailman is a program used to help manage e-mail discussion lists. It was found that mailman did not sanitize the list name before passing it to certain MTAs. A local attacker could use this flaw to execute arbitrary code as the user running mailman. (CVE-2015-2775) It was found that mailman stored private email messages in a world-readable directory. A local user could use this flaw to read private mailing list archives. (CVE-2002-0389) This update also fixes the following bugs: * Previously, it was impossible to configure Mailman in a way that Domain-based Message Authentication, Reporting & Conformance (DMARC) would recognize Sender alignment for Domain Key Identified Mail (DKIM) signatures. Consequently, Mailman list subscribers that belonged to a mail server with a "reject" policy for DMARC, such as yahoo.com or AOL.com, were unable to receive Mailman forwarded messages from senders residing in any domain that provided DKIM signatures. With this update, domains with a "reject" DMARC policy are recognized correctly, and Mailman list administrators are able to configure the way these messages are handled. As a result, after a proper configuration, subscribers now correctly receive Mailman forwarded messages in this scenario. (BZ#1095359) * Mailman used a console encoding when generating a subject for a "welcome email" when new mailing lists were created by the "newlist" command. Consequently, when the console encoding did not match the encoding used by Mailman for that particular language, characters in the "welcome email" could be displayed incorrectly. Mailman has been fixed to use the correct encoding, and characters in the "welcome email" are now displayed properly. (BZ#1056366) * The "rmlist" command used a hardcoded path to list data based on the VAR_PREFIX configuration variable. As a consequence, when the list was created outside of VAR_PREFIX, it was impossible to remove it using the "rmlist" command. With this update, the "rmlist" command uses the correct LIST_DATA_DIR value instead of VAR_PREFIX, and it is now possible to remove the list in described situation. (BZ#1008139) * Due to an incompatibility between Python and Mailman in Red Hat Enterprise Linux 6, when moderators were approving a moderated message to a mailing list and checked the "Preserve messages for the site administrator" checkbox, Mailman failed to approve the message and returned an error. This incompatibility has been fixed, and Mailman now approves messages as expected in this scenario. (BZ#765807) * When Mailman was set to not archive a list but the archive was not set to private, attachments sent to that list were placed in a public archive. Consequently, users of Mailman web interface could list private attachments because httpd configuration of public archive directory allows listing all files in the archive directory. The httpd configuration of Mailman has been fixed to not allow listing of private archive directory, and users of Mailman web interface are no longer able to list private attachments. (BZ#745409) Users of mailman are advised to upgrade to these updated packages, which contain backported patches to correct these issues. 4. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 723584 - CVE-2002-0389 mailman: Local users able to read private mailing list archives 745409 - default httpd config for Mailman offers directory listings for lists with disabled but public archives 765807 - Messages to moderated queues are put in shunt box 1008139 - rmlist fails if list_data_dir is not a child of var_prefix 1056366 - The subject of the welcome email is character garbled when creating a new mailing list with the new list command of mailman. 1095359 - Yahoo.com and AOL DMARC reject policies cripples Mailman-2.1.12 - update to newer release 1208059 - CVE-2015-2775 mailman: directory traversal in MTA transports that deliver programmatically 6. Package List: Red Hat Enterprise Linux Server (v. 6): Source: mailman-2.1.12-25.el6.src.rpm i386: mailman-2.1.12-25.el6.i686.rpm mailman-debuginfo-2.1.12-25.el6.i686.rpm ppc64: mailman-2.1.12-25.el6.ppc64.rpm mailman-debuginfo-2.1.12-25.el6.ppc64.rpm s390x: mailman-2.1.12-25.el6.s390x.rpm mailman-debuginfo-2.1.12-25.el6.s390x.rpm x86_64: mailman-2.1.12-25.el6.x86_64.rpm mailman-debuginfo-2.1.12-25.el6.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: mailman-2.1.12-25.el6.src.rpm i386: mailman-2.1.12-25.el6.i686.rpm mailman-debuginfo-2.1.12-25.el6.i686.rpm x86_64: mailman-2.1.12-25.el6.x86_64.rpm mailman-debuginfo-2.1.12-25.el6.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/ 7. References: https://access.redhat.com/security/cve/CVE-2002-0389 https://access.redhat.com/security/cve/CVE-2015-2775 https://access.redhat.com/security/updates/classification/#moderate 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2015 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFVrzaMXlSAg2UNWIIRAlYTAKCbD3DLuXQkBw6nLzSYUSQeOs+TJgCgwv6O 4G6fvU2dMvXPlJGbYXYEkWg= =miZh - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBVbCAUH6ZAP0PgtI9AQI89w/+I/ZoBahHehAOGsT47JXNBNlkz2YODiG1 smZaMX9OxEb2wmLhrjEwtkw1X4HsCSQL61vD7FWDdOSLhTw24wSWcPHCy13JSCkt YZvUdhOrW/ewTjk1lOiBGZf75R4vM4bY40lV+st995Oks1xos1Bw8cp/b8hJKZ7t X0WjxGqEa9zcFq4uQEq0fel7TzOQeonP8WxeoJBMco3dN/5f48LpQ/SGtoCFEDsX jlRkuQ2nTl0lggpMQ7LiQ1pO+kVtr/+bgAyoi4vjrMVhDd5sH1vK6pBKH8phsIh8 yyhbxO9kK2tNXUDBRn8WHEENtPXI7iif/AC/VQdfmf5jnTWZQG4LoO+Wcyyz0kCA MPDEtPmLv/CWe1Mt0cYSBTTOxf2u9xtmJBhJzphxlL8y7a+EpIzIlMwfglVfHK7A cwJubUwt6XMHrgfeeMSOwQloaUk0YaVe4IuFa07TIhKbZ1DZqnTE+hyxUhIma+9a uu7OGqSOJkhfO7KsaJn+B5UO2JcEdDyg2uI/Nh2//Yood9fqor0AdxP4z142SO3/ tdmnj7QYOkoFaOq8TfCj2xQ65AJLbSWZ4530mFR+Cd7ujYVl7xE49YHJRiPs7Oze 4YLOG24CMy8+sElk7IwCvshlRk9/D7eQQO1CpAEz3UeGdeUVNFQwJVzV1Nc5wVVr C6DlQMPnO58= =UAWX -----END PGP SIGNATURE-----