Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.3036 Exim vulnerability 30 November 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: exim4 Publisher: Ubuntu Operating System: Ubuntu UNIX variants (UNIX, Linux, OSX) Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2017-16944 Original Bulletin: http://www.ubuntu.com/usn/usn-3499-1 Comment: This advisory references vulnerabilities in products which run on platforms other than Ubuntu. It is recommended that administrators running exim4 check for an updated version of the software for their operating system. - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================= Ubuntu Security Notice USN-3499-1 November 29, 2017 exim4 vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 17.10 - - Ubuntu 17.04 Summary: Exim could be made to crash if it received specially crafted network traffic. Software Description: - - exim4: Exim is a mail transport agent Details: It was discovered that Exim incorrectly handled certain BDAT data headers. A remote attacker could possibly use this issue to cause Exim to crash, resulting in a denial of service. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 17.10: exim4-daemon-heavy 4.89-5ubuntu1.2 exim4-daemon-light 4.89-5ubuntu1.2 Ubuntu 17.04: exim4-daemon-heavy 4.88-5ubuntu1.3 exim4-daemon-light 4.88-5ubuntu1.3 In general, a standard system update will make all the necessary changes. References: https://www.ubuntu.com/usn/usn-3499-1 CVE-2017-16944 Package Information: https://launchpad.net/ubuntu/+source/exim4/4.89-5ubuntu1.2 https://launchpad.net/ubuntu/+source/exim4/4.88-5ubuntu1.3 - --------------------------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: https://www.auscert.org.au/bulletins/ =========================================================================== 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 iQIVAwUBWh9X9ox+lLeg9Ub1AQiXqRAAoYDh0qrsCBpzCA0Aa3OiCq09PaXFwP+N tevBl4AVwdCWqmjv0DLXSHXiqfpaS8+LBc/4LohS97ELYtgXSD+qv99Q7egIwjlx 4smG5/i0Dh8OrCt+mhAGvFl0ypWNI5BLjtz+0ip2up49cd9dMJY21Mdws7EQoIp5 M2E+6eOrktPoihThAvJ4ZglOhxUuSf1ZEZl12Rs4Lx/B4yMte8UvKMlqSDfaDRqc kA19I1ajrRR/SV+hIWe/e4v/UUEDJsKBLlk4eTaP+KoU66W6dnOkyKuF9SIZeFZn vO7HoSgpG04sACTNnL2h91bZp87t/O6xLWfYI039dxwuBkv8YEePBOV8Z47w7Uwp oG5sl46sePqrLLxv5GmB9cLmIzvpIbX2gTY/LCmTcuMnKuHLAA0yw32GsTiRSPvH rq+oDTmkJQIE9rfdoI3MqwYI9OQWY7UYqBeql+kvriALXViFSLo2WEh35deJ8jEK hUTnlEv8qlsrebK28Lvfod2OusgeEjY5+R+bwZ/reb/J7XE0B0VqpPoeF2s0LXy4 /s5gfKbgXn2jy6Y47lMvIwMDp6fIlrODVjJepxj+exZr2AIEHAy00jaY7RLbg4gd 9D/3ZYbxx3S5u2yPgZOk+nDHOxbk48iczHxy6KoDTtRnvvkRpp4hFwvC1jFXwpvG vXamoKQFUBA= =lvf5 -----END PGP SIGNATURE-----