Ubuntu security

USN-3477-2: Firefox regression Ubuntu Security Notice USN-3477-2 27th November, 2017 firefox regression A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 17.10 Ubuntu 17.04 Ubuntu 16.04 LTS Ubuntu 14.04 LTS Summary USN-3477-1 caused a regression in Firefox. Software description firefox – Mozilla Open Source web browser Details USN-3477-1 fixed vulnerabilities in Firefox. The update caused searchsuggestions to not be displayed when performing Google searches from thesearch 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 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, or execute arbitrary code. (CVE-2017-7826, CVE-2017-7827, CVE-2017-7828, [ more… ]

USN-3495-1: OptiPNG vulnerability Ubuntu Security Notice USN-3495-1 27th November, 2017 optipng vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 17.10 Ubuntu 17.04 Ubuntu 16.04 LTS Ubuntu 14.04 LTS Summary OptiPNG could be made to crash or run programs as your login if it opened a specially crafted file. Software description optipng – advanced PNG (Portable Network Graphics) optimizer Details It was discovered that OptiPNG incorrectly handled memory. A remoteattacker could use this issue with a specially crafted image file to causeOptiPNG to crash, resulting in a denial of service, or possibly executearbitrary code. Update instructions The problem can be corrected by updating your system to the following package version: Ubuntu 17.10: optipng 0.7.6-1ubuntu0.17.10.1 Ubuntu 17.04: optipng 0.7.6-1ubuntu0.17.04.1 Ubuntu 16.04 LTS: optipng 0.7.6-1ubuntu0.16.04.1 Ubuntu 14.04 LTS: optipng 0.6.4-1ubuntu0.14.04.2 To update your system, please follow these instructions: [ more… ]

USN-3494-1: XML::LibXML vulnerability Ubuntu Security Notice USN-3494-1 27th November, 2017 libxml-libxml-perl vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 17.10 Ubuntu 17.04 Ubuntu 16.04 LTS Ubuntu 14.04 LTS Summary XML::LibXML could be made to crash or run programs if it processed specially crafted input. Software description libxml-libxml-perl – Perl interface to the libxml2 library Details It was discovered that XML::LibXML incorrectly handled memory whenprocessing a replaceChild call. A remote attacker could possibly use thisissue to execute arbitrary code. Update instructions The problem can be corrected by updating your system to the following package version: Ubuntu 17.10: libxml-libxml-perl 2.0128+dfsg-3ubuntu0.1 Ubuntu 17.04: libxml-libxml-perl 2.0128+dfsg-1ubuntu0.1 Ubuntu 16.04 LTS: libxml-libxml-perl 2.0123+dfsg-1ubuntu0.1 Ubuntu 14.04 LTS: libxml-libxml-perl 2.0108+dfsg-1ubuntu0.2 To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades. In general, a standard system update will make all the necessary changes. References CVE-2017-10672 [ more… ]

USN-3493-1: Exim vulnerability Ubuntu Security Notice USN-3493-1 27th November, 2017 exim4 vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 17.10 Ubuntu 17.04 Summary Exim could be made to crash or run programs if it received specially crafted network traffic. Software description exim4 – Exim is a mail transport agent Details It was discovered that Exim incorrectly handled memory in the ESMTPCHUNKING extension. A remote attacker could use this issue to cause Exim tocrash, resulting in a denial of service, or possibly execute arbitrarycode. The default compiler options for affected releases should reduce thevulnerability to a denial of service. Update instructions The problem can be corrected by updating your system to the following package version: Ubuntu 17.10: exim4-daemon-heavy 4.89-5ubuntu1.1 exim4-daemon-light 4.89-5ubuntu1.1 Ubuntu 17.04: exim4-daemon-heavy 4.88-5ubuntu1.2 exim4-daemon-light 4.88-5ubuntu1.2 To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades. [ more… ]

USN-3476-2: postgresql-common vulnerabilities Ubuntu Security Notice USN-3476-2 27th November, 2017 postgresql-common vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 12.04 LTS Summary postgresql-common could be made to overwrite files as the administrator. Software description postgresql-common – PostgreSQL database-cluster manager Details USN-3476-1 fixed two vulnerabilities in postgresql-common. This update providesthe corresponding update for Ubuntu 12.04 ESM. Original advisory details: Dawid Golunski discovered that the postgresql-common pg_ctlcluster script incorrectly handled symlinks. A local attacker could possibly use this issue to escalate privileges. (CVE-2016-1255) It was discovered that the postgresql-common helper scripts incorrectly handled symlinks. A local attacker could possibly use this issue to escalate privileges. (CVE-2017-8806) Update instructions The problem can be corrected by updating your system to the following package version: Ubuntu 12.04 LTS: postgresql-common 129ubuntu1.2 To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades. In [ more… ]