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Operating System: Ubuntu

Linux Siemens R3964 Line Discipline Missing Lock
Posted Apr 23, 2019
Authored by Jann Horn, Google Security Research

The Siemens R3964 line discipline code in drivers/tty/n_r3964.c has a few races around its ioctl handler; for example, the handler for R3964_ENABLE_SIGNALS just allocates and deletes elements in a linked list with zero locking. This code is reachable by an unprivileged user if the line discipline is enabled in the kernel config; Ubuntu 18.04, for example, ships this line discipline as a module.

tags | exploit, kernel
systems | linux, ubuntu
MD5 | 1820caa252c106e5cc11b80e59c7e65c
Ubuntu Security Notice USN-3922-2
Posted Apr 23, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3922-2 - USN-3922-1 fixed vulnerabilities in PHP. This update provides the corresponding update for Ubuntu 14.04 LTS. It was discovered that PHP incorrectly handled certain files. An attacker could possibly use this issue to access sensitive information. It was discovered that PHP incorrectly handled certain files. An attacker could possibly use this issue to execute arbitrary code. Various other issues were also addressed.

tags | advisory, arbitrary, php, vulnerability
systems | linux, ubuntu
advisories | CVE-2019-9022, CVE-2019-9640, CVE-2019-9675
MD5 | 9a003b95860a0fb761d2ab88343099f7
Ubuntu Security Notice USN-3952-1
Posted Apr 23, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3952-1 - Jan Pokorný discovered that Pacemaker incorrectly handled client-server authentication. A local attacker could possibly use this issue to escalate privileges. Jan Pokorný discovered that Pacemaker incorrectly handled certain verifications. A local attacker could possibly use this issue to cause a denial of service. Jan Pokorný discovered that Pacemaker incorrectly handled certain memory operations. A local attacker could possibly use this issue to obtain sensitive information in log outputs. This issue only applied to Ubuntu 18.04 LTS, Ubuntu 18.10, and Ubuntu 19.04. Various other issues were also addressed.

tags | advisory, denial of service, local
systems | linux, ubuntu
advisories | CVE-2018-16877, CVE-2018-16878, CVE-2019-3885
MD5 | 6d6606b6866df85302940916894d495a
Ubuntu Security Notice USN-3953-1
Posted Apr 23, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3953-1 - It was discovered that PHP incorrectly handled certain exif tags in JPEG images. A remote attacker could use this issue to cause PHP to crash, resulting in a denial of service, or possibly execute arbitrary code.

tags | advisory, remote, denial of service, arbitrary, php
systems | linux, ubuntu
advisories | CVE-2019-11034
MD5 | 29f1a73f80be8c44ca45d84e596fe893
Ubuntu Security Notice USN-3951-1
Posted Apr 23, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3951-1 - It was discovered that the Dovecot JSON encoder incorrectly handled certain invalid UTF-8 characters. A remote attacker could possibly use this issue to cause Dovecot to repeatedly crash, resulting in a denial of service.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2019-10691
MD5 | 4bdbb5d53158f13aedd3347833982eb8
Ubuntu Security Notice USN-3950-1
Posted Apr 18, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3950-1 - It was discovered that ZNC incorrectly handled certain invalid encodings. An authenticated remote user could use this issue to cause ZNC 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-2019-9917
MD5 | e044a6e5ad6e7b9d1ce9c6b7967e20e9
Ubuntu Security Notice USN-3914-2
Posted Apr 17, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3914-2 - USN-3914-1 fixed vulnerabilities in NTFS-3G. As an additional hardening measure, this update removes the setuid bit from the ntfs-3g binary. A heap buffer overflow was discovered in NTFS-3G when executing it with a relative mount point path that is too long. A local attacker could potentially exploit this to execute arbitrary code as the administrator. Various other issues were also addressed.

tags | advisory, overflow, arbitrary, local, vulnerability
systems | linux, ubuntu
MD5 | 638dfeb13e7ed7bedc1821f142a0ea35
Ubuntu Security Notice USN-3918-4
Posted Apr 17, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3918-4 - USN-3918-1 fixed vulnerabilities in Firefox. The update caused web compatibility and performance issues with some websites. This update fixes the problem. 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 via application crash, denial of service via successive FTP authorization prompts or modal alerts, trick the user with confusing permission request prompts, obtain sensitive information, conduct social engineering attacks, or execute arbitrary code. A mechanism was discovered that removes some bounds checking for string, array, or typed array accesses if Spectre mitigations have been disabled. If a user were tricked in to opening a specially crafted website with Spectre mitigations disabled, an attacker could potentially exploit this to cause a denial of service, or execute arbitrary code. It was discovered that Upgrade-Insecure-Requests was incorrectly enforced for same-origin navigation. An attacker could potentially exploit this to conduct man-in-the-middle attacks. Various other issues were also addressed.

tags | advisory, web, denial of service, arbitrary, vulnerability
systems | linux, ubuntu
advisories | CVE-2019-9791, CVE-2019-9793, CVE-2019-9799, CVE-2019-9803, CVE-2019-9808
MD5 | 84b03fa22a51ba0b63c8c1a390101295
Ubuntu Security Notice USN-3949-1
Posted Apr 16, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3949-1 - It was discovered that a memory disclosure issue existed in the OpenJDK Library subsystem. An attacker could use this to expose sensitive information and possibly bypass Java sandbox restrictions. Please note that with this update, the OpenJDK package in Ubuntu 18.04 LTS has transitioned from OpenJDK 10 to OpenJDK 11. Several additional packages were updated to be compatible with OpenJDK 11.

tags | advisory, java
systems | linux, ubuntu
advisories | CVE-2019-2422
MD5 | 36bcdd8c843fd3dd9cec430a2882c958
Ubuntu Security Notice USN-3948-1
Posted Apr 16, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3948-1 - A large number of security issues were discovered in the WebKitGTK+ Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting attacks, denial of service attacks, and arbitrary code execution.

tags | advisory, remote, web, denial of service, arbitrary, javascript, code execution, xss
systems | linux, ubuntu
advisories | CVE-2019-11070, CVE-2019-8518, CVE-2019-8536, CVE-2019-8559
MD5 | afdf0e0cecca2a8868662e6759e344de
Ubuntu Security Notice USN-3947-2
Posted Apr 16, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3947-2 - USN-3947-1 fixed a vulnerability in Libxslt. This update provides the corresponding update for Ubuntu 12.04 ESM. It was discovered that Libxslt incorrectly handled certain documents. An attacker could possibly use this issue to access sensitive information. Various other issues were also addressed.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2019-11068
MD5 | 311bf8d0d91554b73cb47b96d7dcee56
Ubuntu Security Notice USN-3947-1
Posted Apr 15, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3947-1 - It was discovered that Libxslt incorrectly handled certain documents. An attacker could possibly use this issue to access sensitive information.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2019-11068
MD5 | 57ff005b02bba87b6b302330c2add8a4
Ubuntu Security Notice USN-3945-1
Posted Apr 12, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3945-1 - It was discovered that Ruby incorrectly handled certain RubyGems. An attacker could possibly use this issue to execute arbitrary commands. It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code.

tags | advisory, arbitrary, ruby
systems | linux, ubuntu
advisories | CVE-2019-8320, CVE-2019-8324
MD5 | e31c0b3ee67169a56b90d68e0524ec93
Ubuntu Security Notice USN-3946-1
Posted Apr 12, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3946-1 - It was discovered that rssh incorrectly handled certain command-line arguments and environment variables. An authenticated user could bypass rssh's command restrictions, allowing an attacker to run arbitrary commands.

tags | advisory, arbitrary
systems | linux, ubuntu
advisories | CVE-2019-1000018
MD5 | 4f673b4e30b7456bf9f5c03e61b35cf6
Ubuntu Security Notice USN-3944-1
Posted Apr 11, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3944-1 - It was discovered that wpa_supplicant and hostapd were vulnerable to a side channel attack against EAP-pwd. A remote attacker could possibly use this issue to recover certain passwords. Mathy Vanhoef discovered that wpa_supplicant and hostapd incorrectly validated received scalar and element values in EAP-pwd-Commit messages. A remote attacker could possibly use this issue to perform a reflection attack and authenticate without the appropriate password. Various other issues were also addressed.

tags | advisory, remote
systems | linux, ubuntu
advisories | CVE-2016-10743, CVE-2019-9495, CVE-2019-9498, CVE-2019-9499
MD5 | 5d54f16798fb2dfd07a893e5dee4bf02
Ubuntu Security Notice USN-3937-2
Posted Apr 10, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3937-2 - USN-3937-1 and USN-3627-1 fixed several vulnerabilities in Apache. This update provides the corresponding update for Ubuntu 12.04 ESM. Simon Kappel discovered that the Apache HTTP Server mod_auth_digest module incorrectly handled threads. A remote attacker with valid credentials could possibly use this issue to authenticate using another username, bypassing access control restrictions. Various other issues were also addressed.

tags | advisory, remote, web, vulnerability
systems | linux, ubuntu
advisories | CVE-2017-15710, CVE-2018-1301, CVE-2018-1312, CVE-2019-0217
MD5 | ccdfa30fb29254b4a1179649103fba29
Ubuntu Security Notice USN-3943-2
Posted Apr 9, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3943-2 - USN-3943-1 fixed a vulnerability in Wget. This update provides the corresponding update for Ubuntu 12.04 ESM. Kusano Kazuhiko discovered that Wget incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. Various other issues were also addressed.

tags | advisory, arbitrary
systems | linux, ubuntu
advisories | CVE-2019-5953
MD5 | 67ac4b776ee3a4e7c5da69a96f5a4868
Ubuntu Security Notice USN-3943-1
Posted Apr 9, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3943-1 - It was discovered that Wget incorrectly handled certain inputs. An attacker could possibly use this issue to access sensitive information. This issue only affected Ubuntu 18.04 LTS and Ubuntu 18.10. Kusano Kazuhiko discovered that Wget incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. Various other issues were also addressed.

tags | advisory, arbitrary
systems | linux, ubuntu
advisories | CVE-2018-20483, CVE-2019-5953
MD5 | eeecd182073bd29c8d1592750928e2a4
Ubuntu Security Notice USN-3942-1
Posted Apr 9, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3942-1 - It was discovered that a memory disclosure issue existed in the OpenJDK Library subsystem. An attacker could use this to expose sensitive information and possibly bypass Java sandbox restrictions.

tags | advisory, java
systems | linux, ubuntu
advisories | CVE-2019-2422
MD5 | 14b652f4efd9b23b217dfff88ac623d0
Ubuntu Security Notice USN-3938-1
Posted Apr 9, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3938-1 - Jann Horn discovered that pam_systemd created logind sessions using some parameters from the environment. A local attacker could exploit this in order to spoof the active session and gain additional PolicyKit privileges.

tags | advisory, local, spoof
systems | linux, ubuntu
advisories | CVE-2019-3842
MD5 | 1ea66e9f11b68b91474bff6257eec73d
Ubuntu Security Notice USN-3941-1
Posted Apr 8, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3941-1 - Fady Othman discovered that Lua incorrectly handled certain scripts. An attacker could possibly use this issue to cause a denial of service.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2019-6706
MD5 | 7a76a3fdd8d0d4ddb3e175ea825d1a7d
Ubuntu Security Notice USN-3940-2
Posted Apr 8, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3940-2 - USN-3940-1 fixed several vulnerabilities in ClamAV. This update provides the corresponding update for Ubuntu 12.04 ESM. It was discovered that ClamAV incorrectly handled scanning certain PDF documents. A remote attacker could possibly use this issue to cause ClamAV to crash, resulting in a denial of service. Various other issues were also addressed.

tags | advisory, remote, denial of service, vulnerability
systems | linux, ubuntu
advisories | CVE-2019-1787, CVE-2019-1788, CVE-2019-1789
MD5 | 44e84f0d153e37f4126f831876a60a3b
Ubuntu Security Notice USN-3939-2
Posted Apr 8, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3939-2 - USN-3939-1 fixed a vulnerability in Samba. This update provides the corresponding update for Ubuntu 12.04 ESM. Michael Hanselmann discovered that Samba incorrectly handled registry files. A remote attacker could possibly use this issue to create new registry files outside of the share, contrary to expectations. Various other issues were also addressed.

tags | advisory, remote, registry
systems | linux, ubuntu
advisories | CVE-2019-3880
MD5 | f01e8ef513a32d37d1d80396a801fd67
Ubuntu Security Notice USN-3940-1
Posted Apr 8, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3940-1 - It was discovered that ClamAV incorrectly handled scanning certain PDF documents. A remote attacker could possibly use this issue to cause ClamAV to crash, resulting in a denial of service. It was discovered that ClamAV incorrectly handled scanning certain OLE2 files. A remote attacker could use this issue to cause ClamAV to crash, resulting in a denial of service, or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2019-1787, CVE-2019-1788, CVE-2019-1789
MD5 | 0db6dd212c93549f9c21296f9f33cb72
Ubuntu Security Notice USN-3939-1
Posted Apr 8, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3939-1 - Michael Hanselmann discovered that Samba incorrectly handled registry files. A remote attacker could possibly use this issue to create new registry files outside of the share, contrary to expectations.

tags | advisory, remote, registry
systems | linux, ubuntu
advisories | CVE-2019-3880
MD5 | 77cab3f7f7d3545fc100f87df1d9bec4
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