Executive Summary
Summary | |
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Title | Linux kernel vulnerabilities |
Informations | |||
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Name | USN-3836-1 | First vendor Publication | 2018-12-03 |
Vendor | Ubuntu | Last vendor Modification | 2018-12-03 |
Severity (Vendor) | N/A | Revision | N/A |
Security-Database Scoring CVSS v3
Cvss vector : N/A | |||
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Overall CVSS Score | NA | ||
Base Score | NA | Environmental Score | NA |
impact SubScore | NA | Temporal Score | NA |
Exploitabality Sub Score | NA | ||
Calculate full CVSS 3.0 Vectors scores |
Security-Database Scoring CVSS v2
Cvss vector : (AV:L/AC:M/Au:N/C:P/I:P/A:P) | |||
---|---|---|---|
Cvss Base Score | 4.4 | Attack Range | Local |
Cvss Impact Score | 6.4 | Attack Complexity | Medium |
Cvss Expoit Score | 3.4 | Authentication | None Required |
Calculate full CVSS 2.0 Vectors scores |
Detail
A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux: Linux kernel - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-kvm: Linux kernel for cloud environments - linux-raspi2: Linux kernel for Raspberry Pi 2 Details: Jann Horn discovered that the Linux kernel mishandles mapping UID or GID ranges inside nested user namespaces in some situations. A local attacker could use this to bypass access controls on resources outside the namespace. (CVE-2018-18955) Philipp Wendler discovered that the overlayfs implementation in the Linux kernel did not properly verify the directory contents permissions from within a unprivileged user namespace. A local attacker could use this to expose sensitive information (protected file names). (CVE-2018-6559) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS: After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: Package Information: |
Original Source
Url : http://www.ubuntu.com/usn/USN-3836-1 |
CWE : Common Weakness Enumeration
% | Id | Name |
---|---|---|
100 % | CWE-200 | Information Exposure |
CPE : Common Platform Enumeration
Alert History
Date | Informations |
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2018-12-19 21:21:59 |
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2018-12-07 00:21:24 |
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2018-12-04 17:21:54 |
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2018-12-04 00:18:45 |
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