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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.2001 bluez security update 10 June 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: bluez Publisher: Debian Operating System: Debian GNU/Linux 8 Impact/Access: Increased Privileges -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2020-0556 Reference: ESB-2020.1206 ESB-2020.1103 ESB-2020.1086 ESB-2020.0931 Original Bulletin: https://www.debian.org/lts/security/2020/dla-2240 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Package : bluez Version : 5.43-2+deb9u2~deb8u1 CVE ID : CVE-2020-0556 Debian Bug : 953770 It was reported that the BlueZ's HID and HOGP profile implementations don't specifically require bonding between the device and the host. Malicious devices can take advantage of this flaw to connect to a target host and impersonate an existing HID device without security or to cause an SDP or GATT service discovery to take place which would allow HID reports to be injected to the input subsystem from a non-bonded source. For the HID profile an new configuration option (ClassicBondedOnly) is introduced to make sure that input connections only come from bonded device connections. The options defaults to 'false' to maximize device compatibility. Note that as a result of the significant changes between the previous version in Jessie (based on upstream release 5.23) and the available patches to address this vulnerability, it was decided that a backport of the bluez package from Debian 9 "Stretch" was the only viable way to address the referenced vulnerability. For Debian 8 "Jessie", this problem has been fixed in version 5.43-2+deb9u2~deb8u1. We recommend that you upgrade your bluez 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 - -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEz9ERzDttUsU/BH8iLNd4Xt2nsg8FAl7f0HYACgkQLNd4Xt2n sg/79w//SsroAY5zx3fejOIKGryeehwDMS2mRvoDdx6u5hjA9sqhJY+q7+RWT6f2 5AtMzYXecHsbMcTeWCCJhX4mVeWI9m99ZywnUqCr+Rb+rCDFFJR219NMzs3U0NfM Iojht+0XWoqS0kiw7T+yMWs/B4+QK+CvBVHTU5+AyOJqI9/qKl1vx2y4Bw+1osF4 3NyS9HNidJqY7dWuYiuDkJLkY6floDQjR/qxQFIjOtlBdpHkx0nKbQlszuXMRsBa pGbZSEZfA2caVlliIYVAmTTam+HnqRG1Z2/uWBgvN+2z8wAF0PxU6dqvvpKjR09v 7lnIMXs5vaNEMyy37HENdM6CQ027mGnhyHYUYvZw7/RTQsMYPbb1PNyFZPjPVKA6 v9MOLuvUU4dpY3L3tZnIo5F0LcQiZrZf4pcFJ8Yd3mAD8gugTOm4W3xbbdeffTIB 2AmM/OPoxpbzF/cRjWtQXf7cOQROP4TH2zg1hMYZZLhA1oIatNWFizwFcffpJDym P/E2V5J8o5obtYye71k7FwwIYXtwtTBHhtfX5xUjRBsuMnLOzLMwi7FTrlgv14Ew LvOcLPgC3F6juGcC4ZLfjqFx7D5DPCvoct1rYRlanckH66oCQJYJTpKzt6Lj5TSA tWlYKGiLlmHUfBNgfZdak/jnXGRp3/DKw08XnlfvKVr4JuK1WQk= =P7XK - -----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: 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 iQIVAwUBXuBH8+NLKJtyKPYoAQiIOQ/8DCcmxZwDPIHkVG9AuCONP6A8AT8fpg+q z6uRJTyCHgGSASwhUIS8mjv065U9eejh1gOwQaqVRMsRzUKYzOoJMOx7+RL1FEoc RESobn4qlvEEVZcl842U7o+++AgVFb/e00AXT61kgpSDC7ADWn1y8UZj3msDRaGI NUkMcmeXWDlo6wc9Fg8q6pZQUZd9Asocz4qBCEy2mzWP7YEj1wr8gBYrhNOuS8j0 RK+6dglRNHVphmuMngH/PhWzEK5UKBLWeSui3oweU4HyibvesLIAF+SHshbH+r8h 0kvZL1GJ6qsd3y9a3x5+wZeUI8JrodtOpx0lep1e29H59LIJH9BHlcah8f+OBfze 3wnZWB/XxCjeEIe97SB0w6QlgBJRLArrlSg0LDgKBZJMKSah0G+Ps+eiADMbLQ3b woUcB52M0if8aPNMpfehIsr4OwNwGTaErrtQRb9QCW6uZ0nllDG1k0cJWIbrHvgf 6NYWWPH1PJ/WUp+0Efwf8VNOW5XpJdHbf73yQ+vgVT2nQ4+bc2twWYRynaiHiVJf FLKzIjVYmGf8g7os7Md552HLUnstJjQ9zMAWaTdHQuI1sBC9aii9ickE0k+UuvvG tIvYZouuS5IKehZ8PR4rmUbrCojWnIPu3AKCDufTPyorVwjkZBrcun4bXZdqxXqi XhJYsTrcvLI= =ViA8 -----END PGP SIGNATURE-----