USN-4521-1: pam_tacplus vulnerability

It was discovered that pamtacplus did not properly manage shared secrets if DEBUG loglevel and journald are used. A remote attacker could use this issue to expose sensitive information...

USN-4520-1: Exim SpamAssassin vulnerability

It was discovered that Exim SpamAssassin does not properly handle configuration strings. An attacker could possibly use this issue to execute arbitrary code. CVE-2019-19920...

USN-4506-1: MCabber vulnerability

It was discovered that MCabber does not properly manage roster pushes. An attacker could possibly use this issue to remotely perform machine-in-the-middle attacks. CVE-2016-9928...

USN-4481-1: FreeRDP vulnerabilities

It was discovered that FreeRDP incorrectly handled certain memory operations. A remote attacker could use this issue to cause FreeRDP to crash, resulting in a denial of service, or possibly execute arbitrary code...

USN-4470-1: sane-backends vulnerabilities

Kritphong Mongkhonvanit discovered that sane-backends incorrectly handled certain packets. A remote attacker could possibly use this issue to obtain sensitive memory information. This issue only affected Ubuntu 16.04 LTS. CVE-2017-6318 It was discovered that sane-backends incorrectly handled...

USN-4471-1: Net-SNMP vulnerabilities

Tobias Neitzel discovered that Net-SNMP incorrectly handled certain symlinks. An attacker could possibly use this issue to access sensitive information. CVE-2020-15861 It was discovered that Net-SNMP incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrar...

USN-4417-2: NSS vulnerability

USN-4417-1 fixed a vulnerability in NSS. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM. Original advisory details: Cesar Pereida, Billy Bob Brumley, Yuval Yarom, and Nicola Tuveri discovered that NSS incorrectly handled RSA key generation. A local attacke...

USN-4418-1: OpenEXR vulnerabilities

It was discovered that OpenEXR incorrectly handled certain malformed EXR image files. If a user were tricked into opening a crafted EXR image file, a remote attacker could cause a denial of service, or possibly execute arbitrary code...

USN-4399-1: Bind vulnerabilities

It was discovered that Bind incorrectly handled large responses during zone transfers. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. CVE-2020-8618 It was discovered that Bind incorrectly handled certain asterisk characters in zone files....

USN-4290-1: libpam-radius-auth vulnerability

It was discovered that libpam-radius-auth incorrectly handled certain long passwords. A remote attacker could possibly use this issue to cause libpam-radius-auth to crash, resulting in a denial of service...

USN-4265-2: SpamAssassin vulnerabilities

USN-4265-1 fixed several vulnerabilities in SpamAssassin. This update provides the corresponding update for Ubuntu 12.04 ESM and 14.04 ESM. Original advisory details: It was discovered that SpamAssassin incorrectly handled certain CF files. If a user or automated system were tricked into using a...

USN-4038-2: bzip2 vulnerabilities

USN-4038-1 fixed several vulnerabilities in bzip2. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM. Original advisory details: Aladdin Mubaied discovered that bzip2 incorrectly handled certain files. An attacker could possibly use this issue to cause a deni...

USN-3888-1: GVfs vulnerability

It was discovered that GVfs incorrectly handled certain inputs. An attacker could possibly use this issue to access sensitive information...

USN-3841-2: lxml vulnerability

USN-3841-1 fixed a vulnerability in lxml. This update provides the corresponding update for Ubuntu 12.04 ESM. Original advisory details: It was discovered that lxml incorrectly handled certain HTML files. An attacker could possibly use this issue to conduct cross-site scripting XSS attacks...

USN-3838-1: LibRaw vulnerabilities

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...

USN-3717-2: PolicyKit vulnerabilities

USN-3717-1 fixed a vulnerability in PolicyKit. This update provides the corresponding update for Ubuntu 12.04 ESM. Original advisory details: It was discovered that PolicyKit incorrectly handled certain duplicate action IDs. A local attacker could use this issue to cause PolicyKit to crash,...

USN-3680-1: libvirt vulnerability and update

Ken Johnson and Jann Horn independently discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via sidechannel attacks. An attacker in the guest could use this to expose sensitive guest information, including kernel memory. This update...

USN-3676-1: Linux kernel vulnerabilities

Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly handle corrupted meta data in some situations. An attacker could use this to specially craft an ext4 filesystem that caused a denial of service system crash when mounted. CVE-2018-1092, CVE-2018-1093 It...

USN-3630-2: Linux kernel (HWE) vulnerability

USN-3630-1 fixed a vulnerability in the Linux kernel for Ubuntu 17.10. This update provides the corresponding updates for the Linux Hardware Enablement HWE kernel from Ubuntu 17.10 for Ubuntu 16.04 LTS. It was discovered that the Broadcom UniMAC MDIO bus controller driver in the Linux kernel did...

USN-3602-1: LibTIFF vulnerabilities

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...

USN-3579-2: LibreOffice regression

USN-3579-1 fixed a vulnerability in LibreOffice. After upgrading, it was no longer possible for LibreOffice to open documents from certain locations outside of the user's home directory. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovere...

USN-3559-1: Django vulnerabilities

It was discovered that Django incorrectly handled certain requests. An attacker could possibly use this to access sensitive information. CVE-2017-12794, CVE-2018-6188...

USN-3524-1: Linux kernel vulnerability

Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A local attacker could use this to expose sensitive information, including kernel memory...

USN-3507-2: Linux kernel (GCP) vulnerabilities

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...

USN-3510-1: Linux kernel vulnerabilities

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...

USN-3441-2: curl vulnerabilities

USN-3441-1 fixed several vulnerabilities in curl. This update provides the corresponding update for Ubuntu 12.04 ESM. Original advisory details: Daniel Stenberg discovered that curl incorrectly handled large floating point output. A remote attacker could use this issue to cause curl to crash,...

USN-3441-1: curl vulnerabilities

Daniel Stenberg discovered that curl incorrectly handled large floating point output. 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 14.04 LTS and Ubuntu 16.04 LTS. CVE-2016-9586...

USN-3404-2: Linux kernel (HWE) vulnerability

USN-3404-1 fixed a vulnerability in the Linux kernel for Ubuntu 17.04. This update provides the corresponding updates for the Linux Hardware Enablement HWE kernel from Ubuntu 17.04 for Ubuntu 16.04 LTS. A reference count bug was discovered in the Linux kernel ipx protocol stack. A local attacker...

USN-3389-2: GD vulnerability

USN-3389-1 fixed a vulnerability in GD Graphics Library. This update provides the corresponding update for Ubuntu 12.04 ESM. Original advisory details: A vulnerability was discovered in GD Graphics Library aka libgd, as used in PHP that does not zero colorMap arrays before use. A specially crafte...

USN-3212-4: LibTIFF vulnerabilities

USN-3212-1 fixed several issues in LibTIFF. This update provides a subset of corresponding update for Ubuntu 12.04 ESM. Mei Wang discovered a multiple integer overflows in LibTIFF which allows remote attackers to cause a denial of service crash or execute arbitrary code via a crafted TIFF image,...

USN-3342-2: Linux kernel (HWE) vulnerabilities

USN-3342-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.10. This update provides the corresponding updates for the Linux Hardware Enablement HWE kernel from Ubuntu 16.10 for Ubuntu 16.04 LTS. USN-3333-1 fixed a vulnerability in the Linux kernel. However, that fix introduced regressions...

USN-3326-1: Linux kernel vulnerability

It was discovered that the stack guard page for processes in the Linux kernel was not sufficiently large enough to prevent overlapping with the heap. An attacker could leverage this with another vulnerability to execute arbitrary code and gain administrative privileges...

USN-3323-1: GNU C Library vulnerability

It was discovered that the GNU C library did not properly handle memory when processing environment variables for setuid programs. A local attacker could use this in combination with another vulnerability to gain administrative privileges...

USN-3229-1: Python Imaging Library vulnerabilities

It was discovered that the Python Imaging Library incorrectly handled certain compressed text chunks in PNG images. A remote attacker could possibly use this issue to cause the Python Imaging Library to crash, resulting in a denial of service. CVE-2014-9601 Cris Neckar discovered that the Python...

USN-3214-1: w3m vulnerabilities

A large number of security issues were discovered in the w3m browser. 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...

USN-3100-1: KDE-PIM Libraries vulnerability

Roland Tapken discovered that the KDE-PIM Libraries incorrectly filtered URLs. A remote attacker could use this issue to perform an HTML injection attack in the KMail plain text viewer...

USN-3064-1: GnuPG vulnerability

Felix Dörre and Vladimir Klebanov discovered that GnuPG incorrectly handled mixing functions in the random number generator. An attacker able to obtain 4640 bits from the RNG can trivially predict the next 160 bits of output...

USN-2979-4: Linux kernel (Qualcomm Snapdragon) vulnerability

Philip Pettersson discovered that the Linux kernel's ASN.1 DER decoder did not properly process certificate files with tags of indefinite length. A local unprivileged attacker could use this to cause a denial of service system crash or possibly execute arbitrary code with administrative privilege...

USN-2979-2: Linux kernel (Xenial HWE) vulnerabilities

USN-2979-1 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. David Matlack discovered that the Kernel-based Virtual Machine KVM implementation in t...

USN-2917-3: Firefox regressions

USN-2917-1 fixed vulnerabilities in Firefox. This update caused several web compatibility regressions. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Francis Gabriel discovered a buffer overflow during ASN.1 decoding in NSS. If a user were tricked in...

USN-2859-1: Thunderbird vulnerabilities

Andrei Vaida, Jesse Ruderman, Bob Clary, and Jesse Ruderman discovered multiple memory safety issues 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 via application crash, or execute arbitra...

USN-2866-1: Firefox vulnerability

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 machine-in-the-middle attack, this flaw could be exploited to view sensitive information...

USN-2858-2: Linux kernel (Wily HWE) vulnerability

Nathan Williams discovered that overlayfs in the Linux kernel incorrectly handled setattr operations. A local unprivileged attacker could use this to create files with administrative permission attributes and execute arbitrary code with elevated privileges...

USN-2852-1: Linux kernel (Raspberry Pi 2) vulnerability

Jann Horn discovered a ptrace issue with user namespaces in the Linux kernel. The namespace owner could potentially exploit this flaw by ptracing a root owned process entering the user namespace to elevate its privileges and potentially gain access outside of the namespace...

USN-2840-2: Linux kernel (OMAP4) vulnerability

Dmitry Vyukov discovered that the Linux kernel's keyring handler attempted to garbage collect incompletely instantiated keys. A local unprivileged attacker could use this to cause a denial of service system crash...

USN-2815-1: libpng vulnerabilities

Mikulas Patocka discovered that libpng incorrectly handled certain large fields. If a user or automated system using libpng were tricked into opening a specially crafted image, an attacker could exploit this to cause libpng to crash, leading to a denial of service. This issue only affected Ubuntu...

USN-2807-1: Linux kernel (Wily HWE) vulnerability

Ben Serebrin discovered that the KVM hypervisor implementation in the Linux kernel did not properly catch Alignment Check exceptions. An attacker in a guest virtual machine could use this to cause a denial of service system crash in the host OS...

USN-2795-1: Linux kernel (Trusty HWE) vulnerabilities

It was discovered that in certain situations, a directory could be renamed outside of a bind mounted location. An attacker could use this to escape bind mount containment and gain access to sensitive information. CVE-2015-2925 Moein Ghasemzadeh discovered that the USB WhiteHEAT serial driver...

USN-2777-1: Linux kernel (Utopic HWE) vulnerabilities

It was discovered that virtio networking in the Linux kernel did not handle fragments correctly, leading to kernel memory corruption. A remote attacker could use this to cause a denial of service system crash or possibly execute code with administrative privileges. CVE-2015-5156 Benjamin Randazzo...

USN-2774-1: Linux kernel (OMAP4) vulnerabilities

It was discovered that virtio networking in the Linux kernel did not handle fragments correctly, leading to kernel memory corruption. A remote attacker could use this to cause a denial of service system crash or possibly execute code with administrative privileges. CVE-2015-5156 It was discovered...