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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2015.0023 strongswan security update 6 January 2015 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: strongswan Publisher: Debian Operating System: Debian GNU/Linux 7 Linux variants Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2014-9221 Original Bulletin: http://www.debian.org/security/2014/dsa-3118 Comment: This advisory references vulnerabilities in products which run on platforms other than Debian. It is recommended that administrators running strongswan check for an updated version of the software for their operating system. - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - - ------------------------------------------------------------------------- Debian Security Advisory DSA-3118-1 security@debian.org http://www.debian.org/security/ Yves-Alexis Perez January 05, 2015 http://www.debian.org/security/faq - - ------------------------------------------------------------------------- Package : strongswan CVE ID : CVE-2014-9221 Mike Daskalakis reported a denial of service vulnerability in charon, the IKEv2 daemon for strongSwan, an IKE/IPsec suite used to establish IPsec protected links. The bug can be triggered by an IKEv2 Key Exchange (KE) payload that contains the Diffie-Hellman (DH) group 1025. This identifier is from the private-use range and only used internally by libtls for DH groups with custom generator and prime (MODP_CUSTOM). As such the instantiated method expects that these two values are passed to the constructor. This is not the case when a DH object is created based on the group in the KE payload. Therefore, an invalid pointer is dereferenced later, which causes a segmentation fault. This means that the charon daemon can be crashed with a single IKE_SA_INIT message containing such a KE payload. The starter process should restart the daemon after that, but this might increase load on the system. Remote code execution is not possible due to this issue, nor is IKEv1 affected in charon or pluto. For the stable distribution (wheezy), this problem has been fixed in version 4.5.2-1.5+deb7u6. For the upcoming stable distribution (jessie), this problem has been fixed in version 5.2.1-5. For the unstable distribution (sid), this problem has been fixed in version 5.2.1-5. We recommend that you upgrade your strongswan packages. Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@lists.debian.org - -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAEBCgAGBQJUqn9mAAoJEG3bU/KmdcClS64H/29//IeNgo/Qeo9zGo/GsCaO A4Y6SgOYj25KIpIPQd0qcPAFID0oJrLNusnW8QTKNSwgw5ntNyY+EYfGmKu57/rH VKFSXp6sJ9N6LtIEZ6jYMNl/M0jw6TfNOW6RoUBq9J+0JBTmlQ61ef5Z+qsoHpjB mgGax4oeujTF8DMbMli5Pntja5NdYTjlLKOEyeiZTfc7JlFju5ehGk9xIRx03Mtr LcLokqknLavI4nPZZV+t4kEeMb9RTWy71Fkfvd0NCmDOkK7W2Der6Ko3kciED1b5 8prp7f0zVkJ29ULisPwbZtaxk9+ETehUdBUoL/76xiMtcu0y1HGqHk8R4U/NIak= =0Vd7 - -----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 iQIVAwUBVKs3dBLndAQH1ShLAQKcEA/+I5Bs4ej6XqWwPLfOKRdyKTqjXWZFhBpe OpZVFmoMvgk/EwhbWGN+isbXG+kfIUoSxwDW5fI2LAD7fyvF2MRO/Fzwy0bShgIF GQ732nOxSADoDdL3CeRhH+PABzu6txAIORSmvgzeUnCQ/n8Im9jq9HYHxuY8ug6M zZ/fVRrfPL5CftA061A6IivjqxqGdNLh/ZIK+O2fpoey2/IT5HUIfcjqFc8vXLjd 30XS4WjBPJrkcjjh6HCBxdWBT7f8icOzag2nvi5HXtS+vfnqb/9JPrKw2MarT79o yElNxaZDhw8IRnHr8TNMX16hMMl0yMLmS7wZORZiWMVu59vQgkQ3Wl8IIJi+O8S2 5xqSAVDQH9y8/skVnvKyCdlktEBf39EyKg4coo+SgFVMQsNyyH5vsMVce3KxfH7z P5sauelc+efAT+J9T8iQ53Uqf12R+UEosKIHm2aUcHJ/jIfKOYyyzXcVlExWexxJ 1xlaFHkk9l1XnmSnkuat2BuUvVcVfw7R39MaKeZ0VQ9EoSHeznIbis4Oekjw4o+h y5af3QE5nVOvx03k5YUetbMksRE36Z85S3iCGpvTA9dD6Dg1EEhGUB5JZbWM+bGF Q4cBGXuLvChEZVscE1yRm0KKO12Nva/CTxSZV6x/7kSdUH/3boT6n1roD3dKyvNK sfZhbGbOUVU= =RQ06 -----END PGP SIGNATURE-----