drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in Linux
Name: |
Mehrere Probleme in Linux |
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ID: |
USN-4069-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 19.04 |
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Datum: |
Di, 23. Juli 2019, 09:27 |
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Referenzen: |
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11884
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11487
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11599
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11833 |
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Applikationen: |
Linux |
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Originalnachricht |
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========================================================================== Ubuntu Security Notice USN-4069-1 July 23, 2019
linux, linux-aws, linux-azure, linux-gcp, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 19.04
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-azure: Linux kernel for Microsoft Azure Cloud systems - 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 - linux-snapdragon: Linux kernel for Snapdragon processors
Details:
It was discovered that an integer overflow existed in the Linux kernel when reference counting pages, leading to potential use-after-free issues. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-11487)
Jann Horn discovered that a race condition existed in the Linux kernel when performing core dumps. A local attacker could use this to cause a denial of service (system crash) or expose sensitive information. (CVE-2019-11599)
It was discovered that the ext4 file system implementation in the Linux kernel did not properly zero out memory in some situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2019-11833)
It was discovered that the Bluetooth Human Interface Device Protocol (HIDP) implementation in the Linux kernel did not properly verify strings were NULL terminated in certain situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2019-11884)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 19.04: linux-image-5.0.0-1011-aws 5.0.0-1011.12 linux-image-5.0.0-1011-gcp 5.0.0-1011.11 linux-image-5.0.0-1011-kvm 5.0.0-1011.12 linux-image-5.0.0-1012-azure 5.0.0-1012.12 linux-image-5.0.0-1013-raspi2 5.0.0-1013.13 linux-image-5.0.0-1017-snapdragon 5.0.0-1017.18 linux-image-5.0.0-21-generic 5.0.0-21.22 linux-image-5.0.0-21-generic-lpae 5.0.0-21.22 linux-image-5.0.0-21-lowlatency 5.0.0-21.22 linux-image-aws 5.0.0.1011.11 linux-image-azure 5.0.0.1012.11 linux-image-gcp 5.0.0.1011.11 linux-image-generic 5.0.0.21.22 linux-image-generic-lpae 5.0.0.21.22 linux-image-gke 5.0.0.1011.11 linux-image-kvm 5.0.0.1011.11 linux-image-lowlatency 5.0.0.21.22 linux-image-raspi2 5.0.0.1013.10 linux-image-snapdragon 5.0.0.1017.10 linux-image-virtual 5.0.0.21.22
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/4069-1 CVE-2019-11487, CVE-2019-11599, CVE-2019-11833, CVE-2019-11884
Package Information: https://launchpad.net/ubuntu/+source/linux/5.0.0-21.22 https://launchpad.net/ubuntu/+source/linux-aws/5.0.0-1011.12 https://launchpad.net/ubuntu/+source/linux-azure/5.0.0-1012.12 https://launchpad.net/ubuntu/+source/linux-gcp/5.0.0-1011.11 https://launchpad.net/ubuntu/+source/linux-kvm/5.0.0-1011.12 https://launchpad.net/ubuntu/+source/linux-raspi2/5.0.0-1013.13 https://launchpad.net/ubuntu/+source/linux-snapdragon/5.0.0-1017.18
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