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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.0295 [SECURITY] [DLA 1652-1] libvncserver security update 1 February 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: libvncserver Publisher: Debian Operating System: Debian GNU/Linux 8 Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-20750 CVE-2018-20749 CVE-2018-20748 CVE-2018-15126 Reference: ESB-2019.0123 ESB-2019.0114 Original Bulletin: https://lists.debian.org/debian-lts-announce/2019/01/msg00029.html - --------------------------BEGIN INCLUDED TEXT-------------------- Package : libvncserver Version : 0.9.9+dfsg2-6.1+deb8u5 CVE ID : CVE-2018-15126 CVE-2018-20748 CVE-2018-20749 CVE-2018-20750 A vulnerability was found by Kaspersky Lab in libvncserver, a C library to implement VNC server/client functionalities. In addition, some of the vulnerabilities addressed in DLA 1617-1 were found to have incomplete fixes, and have been addressed in this update. CVE-2018-15126 An attacker can cause denial of service or remote code execution via a heap use-after-free issue in the tightvnc-filetransfer extension. CVE-2018-20748 CVE-2018-20749 CVE-2018-20750 Some of the out of bound heap write fixes for CVE-2018-20019 and CVE-2018-15127 were incomplete. These CVEs address those issues. For Debian 8 "Jessie", these problems have been fixed in version 0.9.9+dfsg2-6.1+deb8u5. We recommend that you upgrade your libvncserver packages. Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS - --------------------------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 iQIVAwUBXFORMWaOgq3Tt24GAQhiwRAAj82/jnjlQguOkuNa+2bu042hoY1wl+bF BS1/1MT1JxzBj3OEADqm8X7j/7HcO2+zEnQYI/QUace8UIrYoiqajhYOkoHzVKKa x4v2mSecDeKM8WPrq9t5LjdfKFh5BQ9ORYPb6DZZBjbcMcwTaNMFjGtI/apzn2di I4axNi2YMa+qUcDgA8L0WBA2U5o//ro3c/3T83hJEsB7K4fwhc8v1qGEfBQA+/fA fpTjjtITgd4r6OLncNHYy3N2rcgf5bj49rELwyW3D+SWGgshQrPrM9xonSHXyeI0 JAlT1aoidw4+FefYYlDzKZKxxVH7z5eaq+25Jt+NznUgVR/fVidH98kbox3ekoP7 ioHG7ex98OS0Hh1XqTCPMxBbswIHlqSMO9tYMnTWuMIZohgBKlLWfrb/+RhIdbNY ikp5DZwi0Zp3oz3hCRa2/TfKVot6VoO6TbyDRbfU9gsZsCNb13qvXhwl6T6ZAn4/ YOD28AMfKA5CSwK7mSh93g1sDg+rmUV2zHZgWstrt8NZSxLNSciy02FqaVoqMKE+ rDFEPdhJGUMWGMxd41b0tiqlbs0jEoUhiGo9vNp1hVbpOHI9172G2WJtMAdFExTl MVQJVX9e1YBSwH1MLIkbifOEipFF+yq4j4+YEtkUwISf88hNBSkikZn7fKsxA3FY bfa3We8prsg= =3cEH -----END PGP SIGNATURE-----