Mehrere Probleme in Linux (Aktualisierung)
ID: | USN-3871-5 |
Distribution: | Ubuntu |
Plattformen: | Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS |
Datum: | Fr, 8. Februar 2019, 07:08 |
Referenzen: | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-17972
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19407 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-10879 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-10876 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-10877 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16882 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-10883 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14625 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-10878 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-10882 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-9516 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-10880 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18281 |
Applikationen: | Linux |
Update von: | Mehrere Probleme in Linux |
Originalnachricht |
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--===============2668310283701508195== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="n1iI6MeELQa9IOaF" Content-Disposition: inline --n1iI6MeELQa9IOaF Content-Type: text/plain; charset=us-ascii Content-Disposition: inline ========================================================================== Ubuntu Security Notice USN-3871-5 February 07, 2019 linux-azure vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux-azure: Linux kernel for Microsoft Azure Cloud systems Details: Wen Xu discovered that a use-after-free vulnerability existed in the ext4 filesystem implementation in the Linux kernel. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10876, CVE-2018-10879) Wen Xu discovered that a buffer overflow existed in the ext4 filesystem implementation in the Linux kernel. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10877) Wen Xu discovered that an out-of-bounds write vulnerability existed in the ext4 filesystem implementation in the Linux kernel. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10878, CVE-2018-10882) Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly ensure that xattr information remained in inode bodies. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (system crash). (CVE-2018-10880) Wen Xu discovered that the ext4 file system implementation in the Linux kernel could possibly perform an out of bounds write when updating the journal for an inline file. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (system crash). (CVE-2018-10883) It was discovered that a race condition existed in the vsock address family implementation of the Linux kernel that could lead to a use-after-free condition. A local attacker in a guest virtual machine could use this to expose sensitive information (host machine kernel memory). (CVE-2018-14625) Cfir Cohen discovered that a use-after-free vulnerability existed in the KVM implementation of the Linux kernel, when handling interrupts in environments where nested virtualization is in use (nested KVM virtualization is not enabled by default in Ubuntu kernels). A local attacker in a guest VM could possibly use this to gain administrative privileges in a host machine. (CVE-2018-16882) Jann Horn discovered that the procfs file system implementation in the Linux kernel did not properly restrict the ability to inspect the kernel stack of an arbitrary task. A local attacker could use this to expose sensitive information. (CVE-2018-17972) Jann Horn discovered that the mremap() system call in the Linux kernel did not properly flush the TLB when completing, potentially leaving access to a physical page after it has been released to the page allocator. A local attacker could use this to cause a denial of service (system crash), expose sensitive information, or possibly execute arbitrary code. (CVE-2018-18281) Wei Wu discovered that the KVM implementation in the Linux kernel did not properly ensure that ioapics were initialized. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-19407) It was discovered that the debug interface for the Linux kernel's HID subsystem did not properly perform bounds checking in some situations. An attacker with access to debugfs could use this to cause a denial of service or possibly gain additional privileges. (CVE-2018-9516) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS: linux-image-4.15.0-1037-azure 4.15.0-1037.39 linux-image-azure 4.15.0.1037.37 Ubuntu 16.04 LTS: linux-image-4.15.0-1037-azure 4.15.0-1037.39~16.04.1 linux-image-azure 4.15.0.1037.42 Ubuntu 14.04 LTS: linux-image-4.15.0-1037-azure 4.15.0-1037.39~14.04.2 linux-image-azure 4.15.0.1037.24 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/usn/usn-3871-5 https://usn.ubuntu.com/usn/usn-3871-1 CVE-2018-10876, CVE-2018-10877, CVE-2018-10878, CVE-2018-10879, CVE-2018-10880, CVE-2018-10882, CVE-2018-10883, CVE-2018-14625, CVE-2018-16882, CVE-2018-17972, CVE-2018-18281, CVE-2018-19407, CVE-2018-9516 Package Information: https://launchpad.net/ubuntu/+source/linux-azure/4.15.0-1037.39 https://launchpad.net/ubuntu/+source/linux-azure/4.15.0-1037.39~16.04.1 https://launchpad.net/ubuntu/+source/linux-azure/4.15.0-1037.39~14.04.2 --n1iI6MeELQa9IOaF Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEpgY7tWAjCaQ8jrvULwmejQBegfQFAlxcq9sACgkQLwmejQBe gfTONRAAkEUhCqYA5Yy2izfiKVYELrIvDGGKImLRyAxFMQuZX9WECq0etjytCdTJ drqDjHHLdVuBqjaS8w6InTmKFy8/yDrugKq1KbTujJkfqRep4GN3kE7imo7JIlNb 4Rf0BAB/UIz0tdZqRI6dq0AuBjbvNsMBT1s89VMXSr8gYOPbesNV3Otdcw1V33Yh WKoU95sO5Dbx1QcPpUDRYULHCVjAvN1j7aOQD4M2/KElRJwt5A35jnbT9K7Goj+P 9laOs+djP15bPEM2Zj/HsceXMzRX0O6w01sWOcqreXxz2ZjcWgREE8J46bNwLxrx o0vUaLzusLjUgCnTbe0Xx8PToQFA/clzBuarNCcQQDU+on/84d3gpEmW73Umc0Cf 36IY93fiRpOXK3af1dR03PI7P5Yjj2dzrpb7BxVcflQEZMDfydjA+HrnrNK3jpBn We88pEwy4lkgIkwL60GCb6rE0+rv+hL55LmUbAn5U+JaCrGz2tyaCLrDJsi3eBFT annYg/JTjGKsdK0HSVXmSbcImZRcTTk+Rxb4uzgZHOZdAZ4ofODYxa1qrhzKNoIz o/W0iJIl7c6cg/jPMmeWQlBx/ZxkTnAXSDgDs8uDh1PC65nl5dNvNqdxJQ9KhhGR bR/1zg0FTsKzlmS4Iz0HDPTu83iv9a1cFbozdcxzWQnzujLxs/0= =zwx2 -----END PGP SIGNATURE----- --n1iI6MeELQa9IOaF-- --===============2668310283701508195== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline -- ubuntu-security-announce mailing list ubuntu-security-announce@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security-announce |