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Email addresssecurity at ubuntu.com
First Active2004-10-28
Last Active2019-03-16
Ubuntu Security Notice USN-3910-1
Posted Mar 16, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3910-1 - It was discovered that the f2fs filesystem implementation in the Linux kernel did not handle the noflush_merge mount option correctly. An attacker could use this to cause a denial of service. It was discovered that the procfs filesystem did not properly handle processes mapping some memory elements onto files. A local attacker could use this to block utilities that examine the procfs filesystem to report operating system state, such as ps. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-18241, CVE-2018-1120, CVE-2018-19985, CVE-2018-7740, CVE-2019-6133
MD5 | 4c9e16088685e925a3c78db741714aee
Ubuntu Security Notice USN-3910-2
Posted Mar 16, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3910-2 - USN-3910-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. It was discovered that the f2fs filesystem implementation in the Linux kernel did not handle the noflush_merge mount option correctly. An attacker could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2017-18241, CVE-2018-1120, CVE-2018-19985, CVE-2018-7740, CVE-2019-6133
MD5 | 90737e4356a35bc59a396e5d7a1d20a2
Ubuntu Security Notice USN-3909-1
Posted Mar 14, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3909-1 - It was discovered that libvirt incorrectly handled waiting for certain agent events. An attacker inside a guest could possibly use this issue to cause libvirtd to stop responding, resulting in a denial of service.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2019-3840
MD5 | f6c908e715df39ee76f1ff3afc82119d
Ubuntu Security Notice USN-3908-2
Posted Mar 14, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3908-2 - USN-3908-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 14.04 LTS for Ubuntu 12.04 ESM. Jann Horn discovered a race condition in the fork system call in the Linux kernel. A local attacker could use this to gain access to services that cache authorizations. Various other issues were also addressed.

tags | advisory, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2019-6133
MD5 | dbb305ea7db319ebed15a4e2411d5c52
Ubuntu Security Notice USN-3908-1
Posted Mar 12, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3908-1 - Jann Horn discovered a race condition in the fork system call in the Linux kernel. A local attacker could use this to gain access to services that cache authorizations.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2019-6133
MD5 | 03182f2331e6a955ceec56252c40c57c
Ubuntu Security Notice USN-3902-2
Posted Mar 12, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3902-2 - USN-3902-1 fixed a vulnerability in PHP. This update provides the corresponding update for Ubuntu 12.04 ESM. It was discovered that the PHP XML-RPC module incorrectly handled decoding XML data. A remote attacker could possibly use this issue to cause PHP to crash, resulting in a denial of service. Various other issues were also addressed.

tags | advisory, remote, denial of service, php
systems | linux, ubuntu
advisories | CVE-2019-9020, CVE-2019-9021, CVE-2019-9023, CVE-2019-9024
MD5 | 65357e37cae18068e3e84434235d1e1f
Ubuntu Security Notice USN-3907-1
Posted Mar 12, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3907-1 - It was discovered that WALinuxAgent created swap files with incorrect permissions. A local attacker could possibly use this issue to obtain sensitive information from the swap file.

tags | advisory, local
systems | linux, ubuntu
advisories | CVE-2019-0804
MD5 | d596f7c7e083bed1bc94c58895bd3bf3
Ubuntu Security Notice USN-3906-1
Posted Mar 12, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3906-1 - It was discovered that LibTIFF incorrectly handled certain malformed images. If a user or automated system were tricked into opening a specially crafted image, a remote attacker could crash the application, leading to a denial of service, or possibly execute arbitrary code with user privileges.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2018-10779, CVE-2019-6128
MD5 | 56e847616d505958b3eb0f59eaea2e67
Ubuntu Security Notice USN-3905-1
Posted Mar 11, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3905-1 - It was discovered that poppler incorrectly handled certain PDF files. An attacker could possibly use this issue to cause a denial of service.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2019-9200
MD5 | 2a51e27e1a9225ba00504cf46b56f536
Ubuntu Security Notice USN-3904-1
Posted Mar 7, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3904-1 - It was discovered that the NVIDIA graphics drivers incorrectly handled the GPU performance counters. A local attacker could possibly use this issue to access the application data processed on the GPU.

tags | advisory, local
systems | linux, ubuntu
MD5 | fd0ff441d79231dc2569fe809743e7e0
Ubuntu Security Notice USN-3903-2
Posted Mar 6, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3903-2 - USN-3903-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.10. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 18.10 for Ubuntu 18.04 LTS. Jason Wang discovered that the vhost net driver in the Linux kernel contained an out of bounds write vulnerability. An attacker in a guest virtual machine could use this to cause a denial of service or possibly execute arbitrary code in the host kernel. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2018-16880, CVE-2018-18397, CVE-2019-6133
MD5 | 5e5d9cbb5878ed83496a64b72a97df4f
Ubuntu Security Notice USN-3903-1
Posted Mar 6, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3903-1 - Jason Wang discovered that the vhost net driver in the Linux kernel contained an out of bounds write vulnerability. An attacker in a guest virtual machine could use this to cause a denial of service or possibly execute arbitrary code in the host kernel. Jann Horn discovered that the userfaultd implementation in the Linux kernel did not properly restrict access to certain ioctls. A local attacker could use this possibly to modify files. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2018-16880, CVE-2018-18397, CVE-2019-6133
MD5 | 1bae64cc96939b5670016270682ddee8
Ubuntu Security Notice USN-3902-1
Posted Mar 6, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3902-1 - It was discovered that the PHP XML-RPC module incorrectly handled decoding XML data. A remote attacker could possibly use this issue to cause PHP to crash, resulting in a denial of service. It was discovered that the PHP PHAR module incorrectly handled certain filenames. A remote attacker could possibly use this issue to cause PHP to crash, resulting in a denial of service. It was discovered that PHP incorrectly parsed certain DNS responses. A remote attacker could possibly use this issue to cause PHP to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS. Various other issues were also addressed.

tags | advisory, remote, denial of service, php
systems | linux, ubuntu
advisories | CVE-2019-9020, CVE-2019-9021, CVE-2019-9022, CVE-2019-9023, CVE-2019-9024
MD5 | 9715d43e4e828f788c824aa665b39b95
Ubuntu Security Notice USN-3901-2
Posted Mar 6, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3901-2 - USN-3901-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 18.04 LTS for Ubuntu 16.04 LTS. Jann Horn discovered that the userfaultd implementation in the Linux kernel did not properly restrict access to certain ioctls. A local attacker could use this possibly to modify files. Various other issues were also addressed.

tags | advisory, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2018-18397, CVE-2018-19854, CVE-2019-6133
MD5 | b16c27e4df4131e0ce265e946b97e632
Ubuntu Security Notice USN-3901-1
Posted Mar 6, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3901-1 - Jann Horn discovered that the userfaultd implementation in the Linux kernel did not properly restrict access to certain ioctls. A local attacker could use this possibly to modify files. It was discovered that the crypto subsystem of the Linux kernel leaked uninitialized memory to user space in some situations. A local attacker could use this to expose sensitive information. Various other issues were also addressed.

tags | advisory, kernel, local, crypto
systems | linux, ubuntu
advisories | CVE-2018-18397, CVE-2018-19854, CVE-2019-6133
MD5 | 6ab9958194be37f509bff70f83a95612
Ubuntu Security Notice USN-3885-2
Posted Mar 4, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3885-2 - USN-3885-1 fixed vulnerabilities in OpenSSH. It was discovered that the fix for CVE-2019-6111 turned out to be incomplete. This update fixes the problem. Harry Sintonen discovered multiple issues in the OpenSSH scp utility. If a user or automated system were tricked into connecting to an untrusted server, a remote attacker could possibly use these issues to write to arbitrary files, change directory permissions, and spoof client output. Various other issues were also addressed.

tags | advisory, remote, arbitrary, spoof, vulnerability
systems | linux, ubuntu
advisories | CVE-2019-6111
MD5 | f34497e7fb170dcf3d9ac60a51149cd4
Ubuntu Security Notice USN-3900-1
Posted Feb 28, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3900-1 - It was discovered that GD incorrectly handled memory when processing certain images. A remote attacker could use this issue with a specially crafted image file to cause GD to crash, resulting in a denial of service, or possibly execute arbitrary code.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2019-6977
MD5 | 5465e69907c9e79e55b5186813ab2317
Ubuntu Security Notice USN-3898-2
Posted Feb 27, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3898-2 - USN-3898-1 fixed a vulnerability in NSS. This update provides the corresponding update for Ubuntu 12.04 ESM. Hanno BAPck and Damian Poddebniak discovered that NSS incorrectly handled certain CMS functions. A remote attacker could possibly use this issue to cause NSS to crash, resulting in a denial of service. Various other issues were also addressed.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2018-18508
MD5 | 96d4a6ebad4a475d23f48aacf78cb18f
Ubuntu Security Notice USN-3898-1
Posted Feb 27, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3898-1 - Hanno BAPck and Damian Poddebniak discovered that NSS incorrectly handled certain CMS functions. A remote attacker could possibly use this issue to cause NSS to crash, resulting in a denial of service.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2018-18508
MD5 | 1f538d3fc5907fe7db2f992a501e9f5a
Ubuntu Security Notice USN-3899-1
Posted Feb 27, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3899-1 - Juraj Somorovsky, Robert Merget, and Nimrod Aviram discovered that certain applications incorrectly used OpenSSL and could be exposed to a padding oracle attack. A remote attacker could possibly use this issue to decrypt data.

tags | advisory, remote
systems | linux, ubuntu
advisories | CVE-2019-1559
MD5 | 649244f74bfef62f2e8d667bc9b80619
Ubuntu Security Notice USN-3895-1
Posted Feb 27, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3895-1 - It was discovered that LDB incorrectly handled certain search expressions. A remote attacker could possibly use this issue to cause the Samba LDAP process to crash, resulting in a denial of service.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2019-3824
MD5 | 0fe2b12280334803d3598621a5f4f799
Ubuntu Security Notice USN-3896-1
Posted Feb 27, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3896-1 - Multiple security issues were discovered in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, bypass same origin protections, or execute arbitrary code.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2018-18356
MD5 | 6e08cc9799b6051189410337e2aa406f
Ubuntu Security Notice USN-3897-1.t.xt
Posted Feb 27, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3897-1 - A use-after-free was discovered in libical. If a user were tricked in to opening a specially crafted ICS calendar file, an attacker could potentially exploit this to cause a denial of service. Multiple security issues were discovered in Thunderbird. If a user were tricked in to opening a specially crafted message, an attacker could potentially exploit these to cause a denial of service, or execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2016-5824, CVE-2018-18509
MD5 | 99633af618d616f368ddcfe60c6a90b1
Ubuntu Security Notice USN-3894-1
Posted Feb 26, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3894-1 - It was discovered that GNOME Keyring incorrectly cleared out credentials supplied to the PAM module. A local attacker could possibly use this issue to discover login credentials.

tags | advisory, local
systems | linux, ubuntu
advisories | CVE-2018-20781
MD5 | 7c4f101099858977401af137cb677b7e
Ubuntu Security Notice USN-3866-3
Posted Feb 26, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3866-3 - USN-3866-2 fixed a regression in Ghostscript. The Ghostscript update introduced a new regression that resulted in certain pages being printed with a blue background. This update fixes the problem. Tavis Ormandy discovered that Ghostscript incorrectly handled certain PostScript files. If a user or automated system were tricked into processing a specially crafted file, a remote attacker could possibly use this issue to access arbitrary files, execute arbitrary code, or cause a denial of service. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
MD5 | bcedf1d55d9ba455b92845d70d575012
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