[월:] 2020년 06월

USN-4389-1: Linux kernel vulnerabilities linux, linux-aws, linux-azure, linux-gcp, linux-kvm, linux-oracle vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 20.04 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-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-oracle – Linux kernel for Oracle Cloud systems Details It was discovered that the F2FS file system implementation in the Linux kernel did not properly perform bounds checking on xattrs in some situations. A local attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2020-0067) It was discovered that memory contents previously stored in microarchitectural special registers after RDRAND, RDSEED, and [ more… ]

USN-4388-1: Linux kernel vulnerabilities linux-gke-5.0, linux-oem-osp1 vulnerabilities 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-gke-5.0 – Linux kernel for Google Container Engine (GKE) systems linux-oem-osp1 – Linux kernel for OEM systems Details It was discovered that the F2FS file system implementation in the Linux kernel did not properly perform bounds checking on xattrs in some situations. A local attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2020-0067) It was discovered that memory contents previously stored in microarchitectural special registers after RDRAND, RDSEED, and SGX EGETKEY read operations on Intel client and Xeon E3 processors may be briefly exposed to processes on the same or different processor cores. A local attacker could use this to expose sensitive information. (CVE-2020-0543) [ more… ]

USN-4387-1: Linux kernel vulnerabilities linux, linux-aws, linux-aws-5.3, linux-azure, linux-azure-5.3, linux-gcp, linux-gcp-5.3, linux-gke-5.3, linux-hwe, linux-kvm, linux-oracle, linux-oracle-5.3 vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 19.10 Ubuntu 18.04 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-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-oracle – Linux kernel for Oracle Cloud systems linux-aws-5.3 – Linux kernel for Amazon Web Services (AWS) systems linux-azure-5.3 – Linux kernel for Microsoft Azure Cloud systems linux-gcp-5.3 – Linux kernel for Google Cloud Platform (GCP) systems linux-gke-5.3 – Linux kernel for Google Container Engine (GKE) systems linux-hwe – Linux hardware enablement (HWE) kernel linux-oracle-5.3 [ more… ]

USN-4385-1: Intel Microcode vulnerabilities intel-microcode vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 20.04 LTS Ubuntu 19.10 Ubuntu 18.04 LTS Ubuntu 16.04 LTS Ubuntu 14.04 ESM Summary Several security issues were fixed in Intel Microcode. Software Description intel-microcode – Processor microcode for Intel CPUs Details It was discovered that memory contents previously stored in microarchitectural special registers after RDRAND, RDSEED, and SGX EGETKEY read operations on Intel client and Xeon E3 processors may be briefly exposed to processes on the same or different processor cores. A local attacker could use this to expose sensitive information. (CVE-2020-0543) It was discovered that on some Intel processors, partial data values previously read from a vector register on a physical core may be propagated into unused portions of the store buffer. A local attacker could possible use this to [ more… ]

USN-4386-1: libjpeg-turbo vulnerability libjpeg-turbo vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 20.04 LTS Ubuntu 19.10 Ubuntu 18.04 LTS Ubuntu 16.04 LTS Ubuntu 14.04 ESM Ubuntu 12.04 ESM Summary libjpeg-turbo could be made to expose sensitive information if it received a specially crafted PPM file. Software Description libjpeg-turbo – library for handling JPEG files Details It was discovered that libjpeg-turbo incorrectly handled certain PPM files. An attacker could possibly use this issue to access sensitive information. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS libjpeg-turbo8 – 2.0.3-0ubuntu1.20.04.1 Ubuntu 19.10 libjpeg-turbo8 – 2.0.3-0ubuntu1.19.10.1 Ubuntu 18.04 LTS libjpeg-turbo8 – 1.5.2-0ubuntu5.18.04.4 Ubuntu 16.04 LTS libjpeg-turbo8 – 1.4.2-0ubuntu3.4 Ubuntu 14.04 ESM libjpeg-turbo8 – 1.3.0-0ubuntu2.1+esm1 Ubuntu 12.04 ESM libjpeg-turbo8 – 1.1.90+svn733-0ubuntu4.6 To update your system, please follow these instructions: [ more… ]