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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.0063 linux security update 5 January 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Debian Operating System: Debian GNU/Linux 9 Impact/Access: Access Privileged Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2017-5754 Reference: ASB-2018.0002.3 ESB-2018.0057 ESB-2018.0049 ESB-2018.0044 Original Bulletin: http://www.debian.org/security/ - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - - ------------------------------------------------------------------------- Debian Security Advisory DSA-4078-1 security@debian.org https://www.debian.org/security/ Yves-Alexis Perez January 04, 2018 https://www.debian.org/security/faq - - ------------------------------------------------------------------------- Package : linux CVE ID : CVE-2017-5754 Multiple researchers have discovered a vulnerability in Intel processors, enabling an attacker controlling an unprivileged process to read memory from arbitrary addresses, including from the kernel and all other processes running on the system. This specific attack has been named Meltdown and is addressed in the Linux kernel for the Intel x86-64 architecture by a patch set named Kernel Page Table Isolation, enforcing a near complete separation of the kernel and userspace address maps and preventing the attack. This solution might have a performance impact, and can be disabled at boot time by passing `pti=off' to the kernel command line. We also identified a regression for ancient userspaces using the vsyscall interface, for example chroot and containers using (e)glibc 2.13 and older, including those based on Debian 7 or RHEL/CentOS 6. This regression will be fixed in a later update. The other vulnerabilities (named Spectre) published at the same time are not addressed in this update and will be fixed in a later update. For the oldstable distribution (jessie), this problem will be fixed in a separate update. For the stable distribution (stretch), this problem has been fixed in version 4.9.65-3+deb9u2. We recommend that you upgrade your linux packages. For the detailed security status of linux please refer to its security tracker page at: https://security-tracker.debian.org/tracker/linux 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----- iQEzBAEBCgAdFiEE8vi34Qgfo83x35gF3rYcyPpXRFsFAlpOqZMACgkQ3rYcyPpX RFuTTQf/btBqg9/I3XlnJFyGAmd4eQolTcU5cfDJqNhD4TZoyMocghvw1kYtu7z9 bYVhwCRukJym8O8AXJOxvlcsP7g0ANXqVDHpzCN8byKYgzigVP9brfOu/zDa4uYY EYf8V3pc2QzNo5OV4G+sK5ZklkDnNIde+OxUfU0Otl9fUG2rS5JTFvaRgvGazlbb cN5wltoHD6DBeSRnfadwYPHQR5U+KAJNImh34Y6T73i7n5dGTnNhs6E7n0wlJL9O SQLwoqQeiDpcE7C4TZ1pb4AbFCZXaic+1ONbWy8D7erKNA7kV1U2LQDmPDw9kmua Lc5heEX026Xfdy83v6NAPwR+NU8stg== =GGyG - -----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 iQIVAwUBWk7UjYx+lLeg9Ub1AQj1gA/+I3FtTjq9GkQVt1jx8BIeb0DdkKNiQDNc KFSLRYCUAoB/A8udsWJITye8pYCnmTPtVWdVrBkdhp3IFAUdAdAEHdhuBtufRGgq nDFgD0egw0T/V7Q5kbYBP+pxJmvBxUAtghgBk8f/dt9wJmLCXG9ZLInN0pRLCzjR PJidZQ32dut/eFp4fV60Ku/Sq3RIX9uBr7XIJyQsj9aIFqvjZ/VPfZVU/PYifsdc JuYGBiRVQoN0RYzEud3KD/3UjYAJ/9gkOo8sSBRyEl3t2F0620Fr7d+OTnv/Bee1 QWGwLybrf3qjV6426qMmsGM68ABjw30ZWOjZzpCUrsrvgbFffoigeo3qsqMsH/TX Y6g/FFD6lnyRK02QWUXCNzGQg1+DkLuqyfn6mHKoyUtGaSiDvkOCBtwlTSSa7g0k 5rIcIVgczBAh5t0yksikMO65NPVBtlsc70mi7h0+OUhu7HYR2o5+LwHVaI/jFRc2 /2qWSCUmWBbOHEoi7TK5NhT8ShHokVYdoPaMKWjNdqg2ZGCeZwTBniqLWn7BbpQE u9OAuUxa4jRTEAz8znli9Y1CBHu/kcqoD6IW1A8pDNErHoPK1L+J2Tv1j0FYXBsz BP7MlxWDtgoRU7tErnaBkTFPhT4fPPSIjzJv3K3B2x3LK8rJJ2P0XWOdgTW6dvdB EK1SBgQejPg= =bhzd -----END PGP SIGNATURE-----