drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in Linux
Name: |
Mehrere Probleme in Linux |
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ID: |
USN-4426-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 16.04 LTS, Ubuntu 18.04 LTS |
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Datum: |
Mi, 22. Juli 2020, 07:52 |
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Referenzen: |
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15780
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10757
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11935
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20908 |
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Applikationen: |
Linux |
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Originalnachricht |
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========================================================================== Ubuntu Security Notice USN-4426-1 July 21, 2020
linux, linux-aws, linux-aws-hwe, linux-gcp, linux-gcp-4.15, linux-gke-4.15, linux-kvm, linux-oem, linux-oracle, linux-raspi2 vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS - Ubuntu 16.04 LTS
Summary:
Several security issues were fixed in the Linux kernel.
Software Description: - linux: Linux kernel - linux-aws: Linux kernel for Amazon Web Services (AWS) systems - linux-gcp-4.15: Linux kernel for Google Cloud Platform (GCP) systems - linux-gke-4.15: Linux kernel for Google Container Engine (GKE) systems - linux-kvm: Linux kernel for cloud environments - linux-oem: Linux kernel for OEM systems - linux-oracle: Linux kernel for Oracle Cloud systems - linux-raspi2: Linux kernel for Raspberry Pi (V7) systems - linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
Details:
Jason A. Donenfeld discovered that the ACPI implementation in the Linux kernel did not properly restrict loading SSDT code from an EFI variable. A privileged attacker could use this to bypass Secure Boot lockdown restrictions and execute arbitrary code in the kernel. (CVE-2019-20908)
Fan Yang discovered that the mremap implementation in the Linux kernel did not properly handle DAX Huge Pages. A local attacker with access to DAX storage could use this to gain administrative privileges. (CVE-2020-10757)
Mauricio Faria de Oliveira discovered that the aufs implementation in the Linux kernel improperly managed inode reference counts in the vfsub_dentry_open() method. A local attacker could use this vulnerability to cause a denial of service. (CVE-2020-11935)
Jason A. Donenfeld discovered that the ACPI implementation in the Linux kernel did not properly restrict loading ACPI tables via configfs. A privileged attacker could use this to bypass Secure Boot lockdown restrictions and execute arbitrary code in the kernel. (CVE-2020-15780)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 18.04 LTS: linux-image-4.15.0-1050-oracle 4.15.0-1050.54 linux-image-4.15.0-1066-gke 4.15.0-1066.69 linux-image-4.15.0-1067-raspi2 4.15.0-1067.71 linux-image-4.15.0-1071-kvm 4.15.0-1071.72 linux-image-4.15.0-1079-aws 4.15.0-1079.83 linux-image-4.15.0-1080-gcp 4.15.0-1080.90 linux-image-4.15.0-1093-oem 4.15.0-1093.103 linux-image-4.15.0-112-generic 4.15.0-112.113 linux-image-4.15.0-112-generic-lpae 4.15.0-112.113 linux-image-4.15.0-112-lowlatency 4.15.0-112.113 linux-image-aws-lts-18.04 4.15.0.1079.81 linux-image-gcp-lts-18.04 4.15.0.1080.96 linux-image-generic 4.15.0.112.100 linux-image-generic-lpae 4.15.0.112.100 linux-image-gke 4.15.0.1066.68 linux-image-gke-4.15 4.15.0.1066.68 linux-image-kvm 4.15.0.1071.67 linux-image-lowlatency 4.15.0.112.100 linux-image-oem 4.15.0.1093.96 linux-image-oracle-lts-18.04 4.15.0.1050.59 linux-image-powerpc-e500mc 4.15.0.112.100 linux-image-powerpc-smp 4.15.0.112.100 linux-image-powerpc64-emb 4.15.0.112.100 linux-image-powerpc64-smp 4.15.0.112.100 linux-image-raspi2 4.15.0.1067.65 linux-image-virtual 4.15.0.112.100
Ubuntu 16.04 LTS: linux-image-4.15.0-1050-oracle 4.15.0-1050.54~16.04.1 linux-image-4.15.0-1079-aws 4.15.0-1079.83~16.04.1 linux-image-4.15.0-1080-gcp 4.15.0-1080.90~16.04.1 linux-image-aws-hwe 4.15.0.1079.76 linux-image-gcp 4.15.0.1080.82 linux-image-gke 4.15.0.1080.82 linux-image-oracle 4.15.0.1050.41
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: https://usn.ubuntu.com/4426-1 CVE-2019-20908, CVE-2020-10757, CVE-2020-11935, CVE-2020-15780
Package Information: https://launchpad.net/ubuntu/+source/linux/4.15.0-112.113 https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1079.83 https://launchpad.net/ubuntu/+source/linux-gcp-4.15/4.15.0-1080.90 https://launchpad.net/ubuntu/+source/linux-gke-4.15/4.15.0-1066.69 https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1071.72 https://launchpad.net/ubuntu/+source/linux-oem/4.15.0-1093.103 https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1050.54 https://launchpad.net/ubuntu/+source/linux-raspi2/4.15.0-1067.71 https://launchpad.net/ubuntu/+source/linux-aws-hwe/4.15.0-1079.83~16.04.1 https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1080.90~16.04.1 https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1050.54~16.04.1
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