Ubuntu security notices
These are the Ubuntu security notices that affect the current supported releases of Ubuntu. These notices are also posted to the ubuntu-security-announce mailing list (list archive). To report a security vulnerability in an Ubuntu package, please contact the Ubuntu Security Team. You may also be interested in learning about Ubuntu security policies. For more details on a specific CVE or source package, please see the Ubuntu CVE Tracker.
You can also view the latest notices by subscribing to the RSS 
or the Atom feeds.
USN-3516-1: Firefox vulnerabilities - 5th January 2018
It was discovered that speculative execution performed by modern CPUs could leak information through a timing side-channel attack, and that this could be exploited in web browser JavaScript engines. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to obtain sensitive ...
USN-3515-1: Ruby vulnerability - 4th January 2018
It was discovered that Ruby allows FTP command injection. An attacker could use this to cause arbitrary command execution.
USN-3477-4: Firefox regression - 3rd January 2018
USN-3477-1 fixed vulnerabilities in Firefox. The update introduced a crash reporting issue where background tab crash reports were sent to Mozilla without user opt-in. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Multiple security issues were discovered in Firefox. If a user were tricked in ...
USN-3509-4: Linux kernel (Xenial HWE) regression - 15th December 2017
USN-3509-2 fixed vulnerabilities in the Linux Hardware Enablement kernel for Ubuntu 14.04 LTS. Unfortunately, it also introduced a regression that prevented the Ceph network filesystem from being used. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Mohamed Ghannam discovered that a use-after-free vulnerability existed in ...
USN-3513-1: libxml2 vulnerability - 13th December 2017
It was discovered that libxml2 incorrecty handled certain files. An attacker could use this issue with specially constructed XML data to cause libxml2 to consume resources, leading to a denial of service.
USN-3510-1: Linux kernel vulnerabilities - 7th December 2017
Mohamed Ghannam discovered that a use-after-free vulnerability existed in the Netlink subsystem (XFRM) in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16939) It was discovered that the Linux kernel did not properly handle copy-on- write ...
USN-3509-2: Linux kernel (Xenial HWE) vulnerabilities - 7th December 2017
USN-3509-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. Mohamed Ghannam discovered that a use-after-free vulnerability existed in the Netlink subsystem (XFRM) in the Linux kernel. A ...
CVE-2017-1000405 CVE-2017-12193 CVE-2017-16643 CVE-2017-16939
USN-3506-1: rsync vulnerabilities - 7th December 2017
It was discovered that rsync proceeds with certain file metadata updates before checking for a filename. An attacker could use this to bypass access restrictions. (CVE-2017-17433) It was discovered that rsync does not check for fnamecmp filenames and also does not apply the sanitize_paths protection mechanism to pathnames. An attacker ...
USN-3505-1: Linux firmware vulnerabilities - 6th December 2017
Mathy Vanhoef discovered that the firmware for several Intel WLAN devices incorrectly handled WPA2 in relation to Wake on WLAN. A remote attacker could use this issue with key reinstallation attacks to obtain sensitive information. (CVE-2017-13080, CVE-2017-13081)
USN-3504-1: libxml2 vulnerability - 5th December 2017
Wei Lei discovered that libxml2 incorrecty handled certain parameter entities. An attacker could use this issue with specially constructed XML data to cause libxml2 to consume resources, leading to a denial of service.
USN-3503-1: Evince vulnerability - 4th December 2017
It was discovered that Evince incorrectly handled printing certain DVI files. If a user were tricked into opening and printing a specially-named DVI file, an attacker could use this issue to execute arbitrary code.
USN-3477-3: Firefox regressions - 1st December 2017
USN-3477-1 fixed vulnerabilities in Firefox. The update introduced various minor regressions. This update fixes the problems. We apologize for the inconvenience. Original advisory details: 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 ...
USN-3490-1: Thunderbird vulnerabilities - 1st December 2017
Multiple security issues were discovered in Thunderbird. If a user were tricked in to opening a specially crafted website in a browsing-like context, an attacker could potentially exploit these to bypass same-origin restrictions, cause a denial of service via application crash, or execute arbitrary code. (CVE-2017-7826, CVE-2017-7828, CVE-2017-7830)
USN-3501-1: libxcursor vulnerability - 29th November 2017
It was discovered that libxcursor incorrectly handled certain files. An attacker could use these issues to cause libxcursor to crash, resulting in a denial of service, or possibly execute arbitrary code.
USN-3500-1: libXfont vulnerability - 29th November 2017
It was discovered that libXfont incorrectly followed symlinks when opening font files. A local unprivileged user could use this issue to cause the X server to access arbitrary files, including special device files.
USN-3498-1: curl vulnerabilities - 29th November 2017
Alex Nichols discovered that curl incorrectly handled NTLM authentication credentials. A remote attacker could use this issue to cause curl to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS, Ubuntu 17.04 and Ubuntu 17.10. (CVE-2017-8816) It was discovered that ...
USN-3497-1: OpenJDK 7 vulnerabilities - 29th November 2017
It was discovered that the Smart Card IO subsystem in OpenJDK did not properly maintain state. An attacker could use this to specially construct an untrusted Java application or applet to gain access to a smart card, bypassing sandbox restrictions. (CVE-2017-10274) Gaston Traberg discovered that the Serialization component of OpenJDK ...
CVE-2017-10274 CVE-2017-10281 CVE-2017-10285 CVE-2017-10295 CVE-2017-10345 CVE-2017-10346 CVE-2017-10347 CVE-2017-10348 CVE-2017-10349 CVE-2017-10350 CVE-2017-10355 CVE-2017-10356 CVE-2017-10357 CVE-2017-10388
USN-3496-3: Python vulnerability - 28th November 2017
USN-3496-1 fixed a vulnerability in Python2.7. This update provides the corresponding update for versions 3.4 and 3.5. Original advisory details: It was discovered that Python incorrectly handled decoding certain strings. An attacker could possibly use this issue to execute arbitrary code.
USN-3496-1: Python vulnerability - 28th November 2017
It was discovered that Python incorrectly handled decoding certain strings. An attacker could possibly use this issue to execute arbitrary code.
USN-3477-2: Firefox regression - 27th November 2017
USN-3477-1 fixed vulnerabilities in Firefox. The update caused search suggestions to not be displayed when performing Google searches from the search bar. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Multiple security issues were discovered in Firefox. If a user were tricked in to opening ...
USN-3495-1: OptiPNG vulnerability - 27th November 2017
It was discovered that OptiPNG incorrectly handled memory. A remote attacker could use this issue with a specially crafted image file to cause OptiPNG to crash, resulting in a denial of service, or possibly execute arbitrary code.
USN-3494-1: XML::LibXML vulnerability - 27th November 2017
It was discovered that XML::LibXML incorrectly handled memory when processing a replaceChild call. A remote attacker could possibly use this issue to execute arbitrary code.
USN-3492-1: LibRaw vulnerabilities - 22nd November 2017
It was discovered that LibRaw incorrectly handled photo files. If a user or automated system were tricked into processing a specially crafted photo file, a remote attacker could cause applications linked against LibRaw to crash, resulting in a denial of service, or possibly execute arbitrary code
CVE-2015-3885 CVE-2015-8366 CVE-2015-8367 CVE-2017-13735 CVE-2017-14265 CVE-2017-14348 CVE-2017-14608 CVE-2017-6886 CVE-2017-6887
USN-3491-1: ldns vulnerabilities - 22nd November 2017
Leon Weber discovered that the ldns-keygen tool incorrectly set permissions on private keys. A local attacker could possibly use this issue to obtain generated private keys. This issue only applied to Ubuntu 14.04 LTS. (CVE-2014-3209) Stephan Zeisberg discovered that ldns incorrectly handled memory when processing data. A remote attacker could ...
USN-3489-1: Berkeley DB vulnerability - 21st November 2017
It was discovered that Berkeley DB incorrectly handled certain configuration files. An attacker could possibly use this issue to read sensitive information.
USN-3485-3: Linux kernel (AWS) vulnerabilities - 21st November 2017
It was discovered that a race condition existed in the ALSA subsystem of the Linux kernel when creating and deleting a port via ioctl(). A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-15265) Eric Biggers discovered that the key ...
CVE-2017-15265 CVE-2017-15299 CVE-2017-15649 CVE-2017-15951 CVE-2017-16525 CVE-2017-16526 CVE-2017-16527 CVE-2017-16529 CVE-2017-16530 CVE-2017-16531 CVE-2017-16533 CVE-2017-16534 CVE-2017-16535
USN-3486-1: Samba vulnerabilities - 21st November 2017
Yihan Lian and Zhibin Hu discovered that Samba incorrectly handled memory when processing certain SMB1 requests. A remote attacker could possibly use this issue to execute arbitrary code. (CVE-2017-14746) Volker Lendecke discovered that Samba incorrectly cleared memory when returning data to a client. A remote attacker could possibly use this ...
USN-3485-2: Linux kernel (Xenial HWE) vulnerabilities - 21st November 2017
USN-3485-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. It was discovered that a race condition existed in the ALSA subsystem of the Linux kernel when creating ...
CVE-2017-15265 CVE-2017-15299 CVE-2017-15649 CVE-2017-15951 CVE-2017-16525 CVE-2017-16526 CVE-2017-16527 CVE-2017-16529 CVE-2017-16530 CVE-2017-16531 CVE-2017-16533 CVE-2017-16534 CVE-2017-16535
USN-3483-1: procmail vulnerability - 20th November 2017
Jakub Wilk discovered that the formail tool incorrectly handled certain malformed mail messages. An attacker could use this flaw to cause formail to crash, resulting in a denial of service, or possibly execute arbitrary code.
USN-3477-1: Firefox vulnerabilities - 16th November 2017
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, read uninitialized memory, obtain sensitive information, bypass same-origin restrictions, bypass CSP protections, bypass mixed content blocking, spoof the addressbar, ...
CVE-2017-7826 CVE-2017-7827 CVE-2017-7828 CVE-2017-7830 CVE-2017-7831 CVE-2017-7832 CVE-2017-7833 CVE-2017-7834 CVE-2017-7835 CVE-2017-7837 CVE-2017-7838 CVE-2017-7839 CVE-2017-7840 CVE-2017-7842
USN-3480-1: Apport vulnerabilities - 15th November 2017
Sander Bos discovered that Apport incorrectly handled core dumps for setuid binaries. A local attacker could use this issue to perform a denial of service via resource exhaustion or possibly gain root privileges. (CVE-2017-14177) Sander Bos discovered that Apport incorrectly handled core dumps for processes in a different PID namespace. ...
USN-3479-1: PostgreSQL vulnerabilities - 14th November 2017
David Rowley discovered that PostgreSQL incorrectly handled memory when processing certain JSON functions. A remote attacker could possibly use this issue to obtain sensitive information. (CVE-2017-15098) Dean Rasheed discovered that PostgreSQL incorrectly enforced SELECT privileges when processing INSERT ... ON CONFLICT DO UPDATE commands. A remote attacker could possibly use ...
USN-3478-1: Perl vulnerabilities - 13th November 2017
Jakub Wilk discovered that Perl incorrectly handled certain regular expressions. An attacker could use this issue to cause Perl to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2017-12837, CVE-2017-12883)
USN-3476-1: postgresql-common vulnerabilities - 9th November 2017
Dawid Golunski discovered that the postgresql-common pg_ctlcluster script incorrectly handled symlinks. A local attacker could possibly use this issue to escalate privileges. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-1255) It was discovered that the postgresql-common helper scripts incorrectly handled symlinks. A local attacker could possibly ...
USN-3475-1: OpenSSL vulnerabilities - 6th November 2017
It was discovered that OpenSSL incorrectly parsed the IPAddressFamily extension in X.509 certificates, resulting in an erroneous display of the certificate in text format. (CVE-2017-3735) It was discovered that OpenSSL incorrectly performed the x86_64 Montgomery squaring procedure. While unlikely, a remote attacker could possibly use this issue to recover private ...
USN-3474-1: Liblouis vulnerability - 6th November 2017
Raphael Sanchez Prudencio discovered that Liblouis incorrectly handled certain files. If a user were tricked into opening a crafted file, an attacker could possibly use this to cause a denial of service or potentially execute arbitrary code.
USN-3472-1: LibreOffice vulnerabilities - 2nd November 2017
Marcin Noga discovered that LibreOffice incorrectly handled PPT documents. If a user were tricked into opening a specially crafted PPT document, a remote attacker could cause LibreOffice to crash, and possibly execute arbitrary code. (CVE-2017-12607) Marcin Noga discovered that LibreOffice incorrectly handled Word documents. If a user were tricked into ...
USN-3471-1: Quagga vulnerabilities - 31st October 2017
Andreas Jaggi discovered that Quagga incorrectly handled certain BGP UPDATE messages. A remote attacker could possibly use this issue to cause Quagga to crash, resulting in a denial of service. (CVE-2017-16227) Quentin Young discovered that Quagga incorrectly handled memory in the telnet vty CLI. An attacker able to connect to ...
USN-3469-2: Linux kernel (Xenial HWE) vulnerabilities - 31st October 2017
USN-3469-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. Anthony Perard discovered that the Xen virtual block driver did not properly initialize some data structures before passing ...
CVE-2017-10911 CVE-2017-12153 CVE-2017-12154 CVE-2017-12192 CVE-2017-14051 CVE-2017-14156 CVE-2017-14340 CVE-2017-14489 CVE-2017-14991 CVE-2017-15537 CVE-2017-9984 CVE-2017-9985
USN-3470-1: Linux kernel vulnerabilities - 31st October 2017
Qian Zhang discovered a heap-based buffer overflow in the tipc_msg_build() function in the Linux kernel. A local attacker could use to cause a denial of service (system crash) or possibly execute arbitrary code with administrative privileges. (CVE-2016-8632) Dmitry Vyukov discovered that a race condition existed in the timerfd subsystem of ...
CVE-2016-8632 CVE-2017-10661 CVE-2017-10662 CVE-2017-10663 CVE-2017-10911 CVE-2017-11176 CVE-2017-14340
USN-3467-1: poppler vulnerability - 30th October 2017
It was discovered that Poppler incorrectly handled certain files. If a user or automated system were tricked into opening a crafted PDF file, an attacker could cause a denial of service.
USN-3465-1: Irssi vulnerabilities - 26th October 2017
Brian Carpenter discovered that Irssi incorrectly handled messages with invalid time stamps. A malicious IRC server could use this issue to cause Irssi to crash, resulting in a denial of service. (CVE-2017-10965) Brian Carpenter discovered that Irssi incorrectly handled the internal nick list. A malicious IRC server could use this ...
CVE-2017-10965 CVE-2017-10966 CVE-2017-15227 CVE-2017-15228 CVE-2017-15721 CVE-2017-15722 CVE-2017-15723
USN-3464-1: Wget vulnerabilities - 26th October 2017
Antti Levomäki, Christian Jalio, and Joonas Pihlaja discovered that Wget incorrectly handled certain HTTP responses. A remote attacker could use this issue to cause Wget to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2017-13089, CVE-2017-13090) Dawid Golunski discovered that Wget incorrectly handled recursive or mirroring ...
USN-3463-1: Werkzeug vulnerability - 25th October 2017
It was discovered that Werkzeug did not properly handle certain web scripts. A remote attacker could use this to inject arbitrary code via a field that contains an exception message.
USN-3462-1: Pacemaker vulnerabilities - 24th October 2017
Jan Pokorný and Alain Moulle discovered that Pacemaker incorrectly handled the IPC interface. A local attacker could possibly use this issue to execute arbitrary code with root privileges. (CVE-2016-7035) Alain Moulle discovered that Pacemaker incorrectly handled authentication. A remote attacker could possibly use this issue to shut down connections, leading ...
USN-3458-1: ICU vulnerability - 23rd October 2017
It was discovered that ICU incorrectly handled certain inputs. If an application using ICU processed crafted data, a remote attacker could possibly cause it to crash or potentially execute arbitrary code with the privileges of the user invoking the program.
USN-3461-1: NVIDIA graphics drivers vulnerabilities - 23rd October 2017
It was discovered that the NVIDIA graphics drivers contained flaws in the kernel mode layer. A local attacker could use these issues to cause a denial of service or potentially escalate their privileges on the system.
CVE-2017-6257 CVE-2017-6259 CVE-2017-6266 CVE-2017-6267 CVE-2017-6272
USN-3459-1: MySQL vulnerabilities - 23rd October 2017
Multiple security issues were discovered in MySQL and this update includes new upstream MySQL versions to fix these issues. MySQL has been updated to 5.5.58 in Ubuntu 14.04 LTS. Ubuntu 16.04 LTS, Ubuntu 17.04 and Ubuntu 17.10 have been updated to MySQL 5.7.20. In addition to security fixes, the updated ...
CVE-2017-10155 CVE-2017-10165 CVE-2017-10167 CVE-2017-10227 CVE-2017-10268 CVE-2017-10276 CVE-2017-10283 CVE-2017-10286 CVE-2017-10294 CVE-2017-10311 CVE-2017-10313 CVE-2017-10314 CVE-2017-10320 CVE-2017-10378 CVE-2017-10379 CVE-2017-10384
USN-3457-1: curl vulnerability - 23rd October 2017
Brian Carpenter discovered that curl incorrectly handled IMAP FETCH response lines. A remote attacker could use this issue to cause curl to crash, resulting in a denial of service, or possibly execute arbitrary code.
USN-3456-1: X.Org X server vulnerabilities - 17th October 2017
It was discovered that the X.Org X server incorrectly handled certain lengths. An attacker able to connect to an X server, either locally or remotely, could use these issues to crash the server, or possibly execute arbitrary code.
CVE-2017-12176 CVE-2017-12177 CVE-2017-12178 CVE-2017-12179 CVE-2017-12180 CVE-2017-12181 CVE-2017-12182 CVE-2017-12183 CVE-2017-12184 CVE-2017-12185 CVE-2017-12186 CVE-2017-12187