Debian LTS Advisory ([SECURITY] [DLA 1481-1] linux-4.9 security update)

Published: 2018-09-02 22:00:00
CVE Author: NIST National Vulnerability Database (NVD)

CVSS Base Vector:
AV:L/AC:M/Au:N/C:C/I:N/A:N

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

Affected Versions:
linux-4.9 on Debian Linux

Recommendations:
For Debian 8 'Jessie', these problems have been fixed in version 4.9.110-3+deb9u4~deb8u1. We recommend that you upgrade your linux-4.9 Linux Distribution Packages.

Summary:
Multiple researchers have discovered a vulnerability in the way the Intel processor designs have implemented speculative execution of instructions in combination with handling of page-faults. This flaw could allow an attacker controlling an unprivileged process to read memory from arbitrary (non-user controlled) addresses, including from the kernel and all other processes running on the system or cross guest/host boundaries to read host memory. To fully resolve these vulnerabilities it is also necessary to install updated CPU microcode (only available in Debian non-free). Common server class CPUs are covered in the update released as DLA 1446-1.

Detection Method:
This check tests the installed software version using the apt Linux Distribution Package manager.

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2018-3620
https://nvd.nist.gov/vuln/detail/CVE-2018-3646

References:

https://lists.debian.org/debian-lts-announce/2018/08/msg00029.html

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Severity
Medium
CVSS Score
4.7

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