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CVE-2017-5754

Status Candidate

Overview

Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis of the data cache.

Related Files

Ubuntu Security Notice USN-3522-4
Posted Jan 11, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3522-4 - USN-3522-2 fixed a vulnerability in the Linux Hardware Enablement kernel for Ubuntu 14.04 LTS to address Meltdown. Unfortunately, that update introduced a regression where a few systems failed to boot successfully. This update fixes the problem. Various other issues were also addressed.

tags | advisory, kernel
systems | linux, ubuntu
advisories | CVE-2017-5754
MD5 | d73ea7e2336ce4f12a3f81d3406dd552
Ubuntu Security Notice USN-3522-3
Posted Jan 11, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3522-3 - USN-3522-1 fixed a vulnerability in the Linux kernel to address Meltdown. Unfortunately, that update introduced a regression where a few systems failed to boot successfully. This update fixes the problem. Various other issues were also addressed.

tags | advisory, kernel
systems | linux, ubuntu
advisories | CVE-2017-5754
MD5 | 4d7b4ced69dbbe793b9334bd984fd703
Ubuntu Security Notice USN-3532-2
Posted Jan 11, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3532-2 - USN-3523-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.10. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 17.10 for Ubuntu 16.04 LTS. Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A local attacker could use this to expose sensitive information, including kernel memory. Various other issues were also addressed.

tags | advisory, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2017-16995, CVE-2017-17862, CVE-2017-17863, CVE-2017-17864, CVE-2017-5754
MD5 | c5a3f8d746ddf39bee7abb6f9185111e
Ubuntu Security Notice USN-3525-1
Posted Jan 11, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3525-1 - Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A local attacker could use this to expose sensitive information, including kernel memory.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-5754
MD5 | f6d4ea5c2df0b5026fb31f44c27eb62c
Ubuntu Security Notice USN-3524-2
Posted Jan 11, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3524-2 - USN-3524-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 14.04 LTS for Ubuntu 12.04 ESM. Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A local attacker could use this to expose sensitive information, including kernel memory. Various other issues were also addressed.

tags | advisory, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2017-5754
MD5 | 762d3d76967b1badce64abde59d94ec7
HP Security Bulletin HPESBHF03805 4
Posted Jan 11, 2018
Authored by HP | Site hp.com

HP Security Bulletin HPESBHF03805 4 - On January 3 2018, side-channel security vulnerabilities involving speculative execution were publicly disclosed. These vulnerabilities may impact the listed HPE products, potentially leading to information disclosure and elevation of privilege. Mitigation and resolution of these vulnerabilities may call for both an operating system update, provided by the OS vendor, and a system ROM update from HPE. Revision 4 of this advisory.

tags | advisory, vulnerability, info disclosure
advisories | CVE-2017-5715, CVE-2017-5753, CVE-2017-5754
MD5 | 95b3ba52a943b1a611731bf594847f0d
Kernel Live Patch Security Notice LSN-0034-1
Posted Jan 10, 2018
Authored by Benjamin M. Romer

On January 9, fixes for CVE-2017-5754 were released into the Ubuntu Xenial kernel version 4.4.0-108.131. This CVE, also known as "Meltdown," is a security vulnerability caused by flaws in the design of speculative execution hardware in the computer's CPU.

tags | advisory, kernel
systems | linux, ubuntu
advisories | CVE-2017-5754
MD5 | 4974c888dabe678b81c7dea7955b3a4c
Debian Security Advisory 4082-1
Posted Jan 10, 2018
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4082-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2017-1000407, CVE-2017-1000410, CVE-2017-15868, CVE-2017-16538, CVE-2017-16939, CVE-2017-17448, CVE-2017-17449, CVE-2017-17450, CVE-2017-17558, CVE-2017-17741, CVE-2017-17805, CVE-2017-17806, CVE-2017-17807, CVE-2017-5754, CVE-2017-8824
MD5 | b88b402831cc589e93712fbeed229e93
Ubuntu Security Notice USN-3524-1
Posted Jan 10, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3524-1 - Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A local attacker could use this to expose sensitive information, including kernel memory.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-5754
MD5 | 257c1190c8db4f29219aebe29c12194e
Ubuntu Security Notice USN-3522-2
Posted Jan 10, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3522-2 - USN-3522-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A local attacker could use this to expose sensitive information, including kernel memory. Various other issues were also addressed.

tags | advisory, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2017-5754
MD5 | b64b860b09568182f97f59bf7e46ba05
Ubuntu Security Notice USN-3522-1
Posted Jan 10, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3522-1 - Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A local attacker could use this to expose sensitive information, including kernel memory.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-5754
MD5 | 0309df4e8cea9c3405f86a79f00a8cc7
Ubuntu Security Notice USN-3523-1
Posted Jan 10, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3523-1 - Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A local attacker could use this to expose sensitive information, including kernel memory. Jann Horn discovered that the Berkeley Packet Filter implementation in the Linux kernel did not properly check the relationship between pointer values and the BPF stack. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-16995, CVE-2017-17862, CVE-2017-17863, CVE-2017-17864, CVE-2017-5754
MD5 | a70e4f6712a9f397feb49e6273bf2ee5
FreeBSD Update On Spectre / Meltdown Patching
Posted Jan 9, 2018
Authored by Gordon Tetlow

This is a note from the FreeBSD team that they were notified of the issue in late December and received a briefing under NDA with the original embargo date of January 9th. Since they received relatively late notice of the issue, their ability to provide fixes is delayed.

tags | advisory
systems | freebsd, bsd
advisories | CVE-2017-5715, CVE-2017-5753, CVE-2017-5754
MD5 | 3d8597163525c9232966500bae696d26
Ubuntu Security Notice USN-3516-1
Posted Jan 6, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3516-1 - It was discovered that speculative execution performed by modern CPUs could leak information through a timing side-channel attack, and that this could be exploited in web browser JavaScript engines. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to obtain sensitive information from other domains, bypassing same-origin restrictions.

tags | advisory, web, javascript
systems | linux, ubuntu
advisories | CVE-2017-5753, CVE-2017-5754
MD5 | 7515f6660d050f517b1107818beb00d4
Debian Security Advisory 4078-1
Posted Jan 5, 2018
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4078-1 - 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.

tags | advisory, arbitrary, kernel
systems | linux, debian
advisories | CVE-2017-5754
MD5 | 28ba510efb89d5e80a6e8f3edfa26dc7
Reading Privileged Memory With A Side-Channel
Posted Jan 4, 2018
Authored by Jann Horn, Google Security Research | Site googleprojectzero.blogspot.co.uk

This is the very thorough blog write-up discussing three variants of side-channel attacks that can be leveraged against CPU data cache timing.

tags | paper
advisories | CVE-2017-5715, CVE-2017-5753, CVE-2017-5754
MD5 | 2363cefeef0652a5bd4abcd5e6ee4559
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