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 file a bug, or contact security@ubuntu.com. 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.

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USN-2904-1: Thunderbird vulnerabilities - 8th March 2016

Karthikeyan Bhargavan and Gaetan Leurent discovered that NSS incorrectly allowed MD5 to be used for TLS 1.2 connections. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could be exploited to view sensitive information. (CVE-2015-7575) Yves Younan discovered that graphite2 incorrectly handled certain malformed fonts. If ...

CVE-2015-7575 CVE-2016-1523 CVE-2016-1930 CVE-2016-1935

USN-2915-3: Django regression - 7th March 2016

USN-2915-1 fixed vulnerabilities in Django. The upstream fix for CVE-2016-2512 introduced a regression for certain applications. This update fixes the problem by applying the complete upstream regression fix. Original advisory details: Mark Striemer discovered that Django incorrectly handled user-supplied redirect URLs containing basic authentication credentials. A remote attacker could possibly ...

LP: 1553251

USN-2921-1: Squid vulnerabilities - 7th March 2016

Sebastian Krahmer discovered that Squid incorrectly handled certain SNMP requests. If SNMP is enabled, a remote attacker could use this issue to cause Squid to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2014-6270) Alex Rousskov discovered that Squid incorrectly handled certain malformed responses. A remote ...

CVE-2014-6270 CVE-2016-2571

USN-2915-2: Django regression - 7th March 2016

USN-2915-1 fixed vulnerabilities in Django. The upstream fix for CVE-2016-2512 introduced a regression for certain applications. This update fixes the problem. Original advisory details: Mark Striemer discovered that Django incorrectly handled user-supplied redirect URLs containing basic authentication credentials. A remote attacker could possibly use this issue to perform a cross-site ...

LP: 1553251

USN-2919-1: JasPer vulnerabilities - 3rd March 2016

Jacob Baines discovered that JasPer incorrectly handled ICC color profiles in JPEG-2000 image files. If a user were tricked into opening a specially crafted JPEG-2000 image file, a remote attacker could cause JasPer to crash or possibly execute arbitrary code with user privileges. (CVE-2016-1577) Tyler Hicks discovered that JasPer incorrectly ...

CVE-2016-1577 CVE-2016-2116

USN-2918-1: pixman vulnerability - 3rd March 2016

Vincent LE GARREC discovered an integer underflow in pixman. If a user were tricked into opening a specially crafted file, a remote attacker could cause pixman to crash, resulting in a denial of service, or possibly execute arbitrary code.

CVE-2014-9766

USN-2916-1: Perl vulnerabilities - 2nd March 2016

It was discovered that Perl incorrectly handled certain regular expressions with an invalid backreference. An attacker could use this issue to cause Perl to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2013-7422) Markus Vervier discovered that Perl incorrectly handled nesting in the Data::Dumper module. An ...

CVE-2013-7422 CVE-2014-4330 CVE-2016-2381

USN-2915-1: Django vulnerabilities - 1st March 2016

Mark Striemer discovered that Django incorrectly handled user-supplied redirect URLs containing basic authentication credentials. A remote attacker could possibly use this issue to perform a cross-site scripting attack or a malicious redirect. (CVE-2016-2512) Sjoerd Job Postmus discovered that Django incorrectly handled timing when doing password hashing operations. A remote attacker ...

CVE-2016-2512 CVE-2016-2513

USN-2914-1: OpenSSL vulnerabilities - 1st March 2016

Yuval Yarom, Daniel Genkin, and Nadia Heninger discovered that OpenSSL was vulnerable to a side-channel attack on modular exponentiation. On certain CPUs, a local attacker could possibly use this issue to recover RSA keys. This flaw is known as CacheBleed. (CVE-2016-0702) Adam Langley discovered that OpenSSL incorrectly handled memory when ...

CVE-2016-0702 CVE-2016-0705 CVE-2016-0797 CVE-2016-0798 CVE-2016-0799

USN-2909-2: Linux kernel (Utopic HWE) regression - 27th February 2016

USN-2909-1 fixed vulnerabilities in the Ubuntu 14.10 Linux kernel backported to Ubuntu 14.04 LTS. An incorrect locking fix caused a regression that broke graphics displays for Ubuntu 14.04 LTS guests running the Ubuntu 14.10 backport kernel within VMWare virtual machines. This update fixes the problem. We apologize for the inconvenience. ...

LP: 1548587

USN-2910-2: Linux kernel (Vivid HWE) regression - 27th February 2016

USN-2910-1 fixed vulnerabilities in the Ubuntu 15.04 Linux kernel backported to Ubuntu 14.04 LTS. An incorrect locking fix caused a regression that broke graphics displays for Ubuntu 14.04 LTS guests running the Ubuntu 15.04 backport kernel within VMWare virtual machines. This update fixes the problem. We apologize for the inconvenience. ...

LP: 1548587

USN-2908-5: Linux kernel (Wily HWE) regression - 27th February 2016

USN-2908-2 fixed vulnerabilities in the Ubuntu 15.10 Linux kernel backported to Ubuntu 14.04 LTS. An incorrect locking fix caused a regression that broke graphics displays for Ubuntu 14.04 LTS guests running the Ubuntu 15.10 backport kernel within VMWare virtual machines. This update fixes the problem. We apologize for the inconvenience. ...

LP: 1548587

USN-2908-4: Linux kernel regression - 26th February 2016

USN-2908-1 fixed vulnerabilities in the Linux kernel for Ubuntu 15.10. An incorrect locking fix caused a regression that broke graphics displays for Ubuntu 15.10 guests running within VMWare virtual machines. This update fixes the problem. We apologize for the inconvenience. Original advisory details: halfdog discovered that OverlayFS, when mounting on ...

LP: 1548587

USN-2913-3: OpenSSL update - 24th February 2016

USN-2913-1 removed 1024-bit RSA CA certificates from the ca-certificates package. This update adds support for alternate certificate chains to the OpenSSL package to properly handle the removal. Original advisory details: The ca-certificates package contained outdated CA certificates. This update refreshes the included certificates to those contained in the 20160104 package, ...

LP: 1528645

USN-2913-2: glib-networking update - 24th February 2016

USN-2913-1 removed 1024-bit RSA CA certificates from the ca-certificates package. This update adds support for alternate certificate chains to the glib-networking package to properly handle the removal. Original advisory details: The ca-certificates package contained outdated CA certificates. This update refreshes the included certificates to those contained in the 20160104 package, ...

LP: 1528645

USN-2913-4: GnuTLS update - 24th February 2016

USN-2913-1 removed 1024-bit RSA CA certificates from the ca-certificates package. This update adds support for alternate certificate chains to the GnuTLS package to properly handle the removal. Original advisory details: The ca-certificates package contained outdated CA certificates. This update refreshes the included certificates to those contained in the 20160104 package, ...

LP: 1528645

USN-2913-1: ca-certificates update - 24th February 2016

The ca-certificates package contained outdated CA certificates. This update refreshes the included certificates to those contained in the 20160104 package, including the removal of the SPI CA and CA certificates with 1024-bit RSA keys.

LP: 1528645

USN-2903-2: NSS regression - 23rd February 2016

USN-2903-1 fixed a vulnerability in NSS. An incorrect package versioning change in Ubuntu 12.04 LTS caused a regression when building software against NSS. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Hanno Böck discovered that NSS incorrectly handled certain division functions, possibly leading to cryptographic ...

LP: 1547147

USN-2912-1: libssh vulnerabilities - 23rd February 2016

Mariusz Ziulek discovered that libssh incorrectly handled certain packets. A remote attacker could possibly use this issue to cause libssh to crash, resulting in a denial of service. (CVE-2015-3146) Aris Adamantiadis discovered that libssh incorrectly generated ephemeral secret keys of 128 bits instead of the recommended 1024 or 2048 bits ...

CVE-2015-3146 CVE-2016-0739

USN-2905-1: Oxide vulnerability - 23rd February 2016

A security issue was discovered in Chromium. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to bypass same-origin restrictions or a sandbox protection mechanism. (CVE-2016-1629)

CVE-2016-1629

USN-2911-2: Linux kernel (OMAP4) vulnerability - 22nd February 2016

It was discovered that the Linux kernel keyring subsystem contained a race between read and revoke operations. A local attacker could use this to cause a denial of service (system crash).

CVE-2015-7550

USN-2911-1: Linux kernel vulnerability - 22nd February 2016

It was discovered that the Linux kernel keyring subsystem contained a race between read and revoke operations. A local attacker could use this to cause a denial of service (system crash).

CVE-2015-7550

USN-2910-1: Linux kernel (Vivid HWE) vulnerabilities - 22nd February 2016

halfdog discovered that OverlayFS, when mounting on top of a FUSE mount, incorrectly propagated file attributes, including setuid. A local unprivileged attacker could use this to gain privileges. (CVE-2016-1576) halfdog discovered that OverlayFS in the Linux kernel incorrectly propagated security sensitive extended attributes, such as POSIX ACLs. A local unprivileged ...

CVE-2015-7550 CVE-2015-8543 CVE-2015-8569 CVE-2015-8575 CVE-2015-8785 CVE-2016-1575 CVE-2016-1576

USN-2909-1: Linux kernel (Utopic HWE) vulnerabilities - 22nd February 2016

halfdog discovered that OverlayFS, when mounting on top of a FUSE mount, incorrectly propagated file attributes, including setuid. A local unprivileged attacker could use this to gain privileges. (CVE-2016-1576) halfdog discovered that OverlayFS in the Linux kernel incorrectly propagated security sensitive extended attributes, such as POSIX ACLs. A local unprivileged ...

CVE-2015-8785 CVE-2016-1575 CVE-2016-1576

USN-2908-1: Linux kernel vulnerabilities - 22nd February 2016

halfdog discovered that OverlayFS, when mounting on top of a FUSE mount, incorrectly propagated file attributes, including setuid. A local unprivileged attacker could use this to gain privileges. (CVE-2016-1576) halfdog discovered that OverlayFS in the Linux kernel incorrectly propagated security sensitive extended attributes, such as POSIX ACLs. A local unprivileged ...

CVE-2013-4312 CVE-2015-8785 CVE-2016-1575 CVE-2016-1576 CVE-2016-2069

USN-2908-2: Linux kernel (Wily HWE) vulnerabilities - 22nd February 2016

halfdog discovered that OverlayFS, when mounting on top of a FUSE mount, incorrectly propagated file attributes, including setuid. A local unprivileged attacker could use this to gain privileges. (CVE-2016-1576) halfdog discovered that OverlayFS in the Linux kernel incorrectly propagated security sensitive extended attributes, such as POSIX ACLs. A local unprivileged ...

CVE-2013-4312 CVE-2015-8785 CVE-2016-1575 CVE-2016-1576 CVE-2016-2069

USN-2908-3: Linux kernel (Raspberry Pi 2) vulnerabilities - 22nd February 2016

halfdog discovered that OverlayFS, when mounting on top of a FUSE mount, incorrectly propagated file attributes, including setuid. A local unprivileged attacker could use this to gain privileges. (CVE-2016-1576) halfdog discovered that OverlayFS in the Linux kernel incorrectly propagated security sensitive extended attributes, such as POSIX ACLs. A local unprivileged ...

CVE-2013-4312 CVE-2015-8785 CVE-2016-1575 CVE-2016-1576 CVE-2016-2069

USN-2907-2: Linux kernel (Trusty HWE) vulnerabilities - 22nd February 2016

halfdog discovered that OverlayFS, when mounting on top of a FUSE mount, incorrectly propagated file attributes, including setuid. A local unprivileged attacker could use this to gain privileges. (CVE-2016-1576) halfdog discovered that OverlayFS in the Linux kernel incorrectly propagated security sensitive extended attributes, such as POSIX ACLs. A local unprivileged ...

CVE-2015-7550 CVE-2015-8543 CVE-2015-8569 CVE-2015-8575 CVE-2015-8785 CVE-2016-1575 CVE-2016-1576

USN-2907-1: Linux kernel vulnerabilities - 22nd February 2016

halfdog discovered that OverlayFS, when mounting on top of a FUSE mount, incorrectly propagated file attributes, including setuid. A local unprivileged attacker could use this to gain privileges. (CVE-2016-1576) halfdog discovered that OverlayFS in the Linux kernel incorrectly propagated security sensitive extended attributes, such as POSIX ACLs. A local unprivileged ...

CVE-2015-7550 CVE-2015-8543 CVE-2015-8569 CVE-2015-8575 CVE-2015-8785 CVE-2016-1575 CVE-2016-1576

USN-2906-1: GNU cpio vulnerabilities - 22nd February 2016

Alexander Cherepanov discovered that GNU cpio incorrectly handled symbolic links when used with the --no-absolute-filenames option. If a user or automated system were tricked into extracting a specially-crafted cpio archive, a remote attacker could possibly use this issue to write arbitrary files. This issue only affected Ubuntu 12.04 LTS and ...

CVE-2015-1197 CVE-2016-2037

USN-2895-1: Oxide vulnerabilities - 18th February 2016

The DOM implementation in Chromium did not properly restrict frame-attach operations from occurring during or after frame-detach operations. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to bypass same-origin restrictions. (CVE-2016-1623) An integer underflow was discovered in Brotli. If a ...

CVE-2016-1623 CVE-2016-1624

USN-2903-1: NSS vulnerability - 17th February 2016

Hanno Böck discovered that NSS incorrectly handled certain division functions, possibly leading to cryptographic weaknesses. (CVE-2016-1938) This update also refreshes the NSS package to version 3.21 which includes the latest CA certificate bundle, and removes the SPI CA.

CVE-2016-1938

USN-2902-1: graphite2 vulnerabilities - 17th February 2016

Yves Younan discovered that graphite2 incorrectly handled certain malformed fonts. If a user or automated system were tricked into opening a specially- crafted font file, a remote attacker could use this issue to cause graphite2 to crash, resulting in a denial of service, or possibly execute arbitrary code.

CVE-2016-1521 CVE-2016-1522 CVE-2016-1523 CVE-2016-1526

USN-2901-1: xdelta3 vulnerability - 17th February 2016

It was discovered that xdelta3 incorrectly handled certain files. If a user or automated system were tricked into processing a specially-crafted file, a remote attacker could use this issue to cause xdelta3 to crash, resulting in a denial of service, or possibly execute arbitrary code.

CVE-2014-9765

USN-2900-1: GNU C Library vulnerability - 16th February 2016

It was discovered that the GNU C Library incorrectly handled receiving responses while performing DNS resolution. A remote attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or possibly execute arbitrary code.

CVE-2015-7547

USN-2899-1: LibreOffice vulnerabilities - 16th February 2016

It was discovered that LibreOffice incorrectly handled LWP document files. If a user were tricked into opening a specially crafted LWP document, a remote attacker could cause LibreOffice to crash, and possibly execute arbitrary code.

CVE-2016-0794 CVE-2016-0795

USN-2855-2: Samba regression - 16th February 2016

USN-2855-1 fixed vulnerabilities in Samba. The upstream fix for CVE-2015-5252 introduced a regression in certain specific environments. This update fixes the problem. Original advisory details: Thilo Uttendorfer discovered that the Samba LDAP server incorrectly handled certain packets. A remote attacker could use this issue to cause the LDAP server to ...

LP: 1545750

USN-2898-2: Eye of GNOME vulnerability - 15th February 2016

It was discovered that Eye of GNOME incorrectly handled certain large images. If a user were tricked into opening a specially-crafted image, a remote attacker could use this issue to cause Eye of GNOME to crash, resulting in a denial of service, or possibly execute arbitrary code.

CVE-2013-7447

USN-2898-1: GTK+ vulnerability - 15th February 2016

It was discovered that GTK+ incorrectly handled certain large images. A remote attacker could use this issue to cause GTK+ applications to crash, resulting in a denial of service, or possibly execute arbitrary code.

CVE-2013-7447

USN-2897-1: Nettle vulnerabilities - 15th February 2016

Hanno Böck discovered that Nettle incorrectly handled carry propagation in the NIST P-256 elliptic curve. (CVE-2015-8803) Hanno Böck discovered that Nettle incorrectly handled carry propagation in the NIST P-384 elliptic curve. (CVE-2015-8804) Niels Moeller discovered that Nettle incorrectly handled carry propagation in the NIST P-256 elliptic curve. (CVE-2015-8805)

CVE-2015-8803 CVE-2015-8804 CVE-2015-8805

USN-2896-1: Libgcrypt vulnerability - 15th February 2016

Daniel Genkin, Lev Pachmanov, Itamar Pipman and Eran Tromer discovered that Libgcrypt was susceptible to an attack via physical side channels. A local attacker could use this attack to possibly recover private keys.

CVE-2015-7511

USN-2893-1: Firefox vulnerability - 11th February 2016

Jason Pang discovered that service workers intercept responses to plugin network requests made through the browser. An attacker could potentially exploit this to bypass same origin restrictions using the Flash plugin. (CVE-2016-1949)

CVE-2016-1949

USN-2894-1: PostgreSQL vulnerabilities - 11th February 2016

It was discovered that PostgreSQL incorrectly handled certain regular expressions. A remote attacker could possibly use this issue to cause PostgreSQL to crash, resulting in a denial of service. (CVE-2016-0773) It was discovered that PostgreSQL incorrectly handled certain configuration settings (GUCS) for users of PL/Java. A remote attacker could possibly ...

CVE-2016-0766 CVE-2016-0773

USN-2892-1: nginx vulnerabilities - 9th February 2016

It was discovered that nginx incorrectly handled certain DNS server responses when the resolver is enabled. A remote attacker could possibly use this issue to cause nginx to crash, resulting in a denial of service. (CVE-2016-0742) It was discovered that nginx incorrectly handled CNAME response processing when the resolver is ...

CVE-2016-0742 CVE-2016-0746 CVE-2016-0747

USN-2880-2: Firefox regression - 8th February 2016

USN-2880-1 fixed vulnerabilities in Firefox. This update introduced a regression which caused Firefox to crash on startup with some configurations. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Bob Clary, Christian Holler, Nils Ohlmeier, Gary Kwong, Jesse Ruderman, Carsten Book, Randell Jesup, Nicolas Pierron, Eric ...

LP: 1538724

USN-2891-1: QEMU vulnerabilities - 3rd February 2016

Qinghao Tang discovered that QEMU incorrectly handled PCI MSI-X support. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 15.10. (CVE-2015-7549) Lian Yihan discovered that QEMU incorrectly handled the VNC ...

CVE-2015-7549 CVE-2015-8504 CVE-2015-8550 CVE-2015-8558 CVE-2015-8567 CVE-2015-8568 CVE-2015-8613 CVE-2015-8619 CVE-2015-8666 CVE-2015-8743 CVE-2015-8744 CVE-2015-8745 CVE-2016-1568 CVE-2016-1714 CVE-2016-1922 CVE-2016-1981 CVE-2016-2197 CVE-2016-2198

USN-2890-3: Linux kernel (Raspberry Pi 2) vulnerabilities - 1st February 2016

It was discovered that a use-after-free vulnerability existed in the AF_UNIX implementation in the Linux kernel. A local attacker could use crafted epoll_ctl calls to cause a denial of service (system crash) or expose sensitive information. (CVE-2013-7446) It was discovered that the KVM implementation in the Linux kernel did not ...

CVE-2013-7446 CVE-2015-7513 CVE-2015-7550 CVE-2015-7990 CVE-2015-8374 CVE-2015-8543 CVE-2015-8569 CVE-2015-8575 CVE-2015-8787

USN-2890-2: Linux kernel (Wily HWE) vulnerabilities - 1st February 2016

It was discovered that a use-after-free vulnerability existed in the AF_UNIX implementation in the Linux kernel. A local attacker could use crafted epoll_ctl calls to cause a denial of service (system crash) or expose sensitive information. (CVE-2013-7446) It was discovered that the KVM implementation in the Linux kernel did not ...

CVE-2013-7446 CVE-2015-7513 CVE-2015-7550 CVE-2015-7990 CVE-2015-8374 CVE-2015-8543 CVE-2015-8569 CVE-2015-8575 CVE-2015-8787

USN-2890-1: Linux kernel vulnerabilities - 1st February 2016

It was discovered that a use-after-free vulnerability existed in the AF_UNIX implementation in the Linux kernel. A local attacker could use crafted epoll_ctl calls to cause a denial of service (system crash) or expose sensitive information. (CVE-2013-7446) It was discovered that the KVM implementation in the Linux kernel did not ...

CVE-2013-7446 CVE-2015-7513 CVE-2015-7550 CVE-2015-7990 CVE-2015-8374 CVE-2015-8543 CVE-2015-8569 CVE-2015-8575 CVE-2015-8787

USN-2889-2: Linux kernel (Vivid HWE) vulnerabilities - 1st February 2016

It was discovered that a use-after-free vulnerability existed in the AF_UNIX implementation in the Linux kernel. A local attacker could use crafted epoll_ctl calls to cause a denial of service (system crash) or expose sensitive information. (CVE-2013-7446) It was discovered that the KVM implementation in the Linux kernel did not ...

CVE-2013-7446 CVE-2015-7513 CVE-2015-7990 CVE-2015-8374 CVE-2015-8787

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