Ubuntu Security Notice USN-3530-1
11th January, 2018
webkit2gtk vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
WebKitGTK+ could be made to expose sensitive information.
Software description
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 information from other
domains, bypassing same-origin restrictions. (CVE-2017-5753, CVE-2017-5715)
Update instructions
The problem can be corrected by updating your system to the following package version:
Ubuntu 17.10:
libwebkit2gtk-4.0-37 2.18.5-0ubuntu0.17.10.1
libjavascriptcoregtk-4.0-18 2.18.5-0ubuntu0.17.10.1
Ubuntu 17.04:
libwebkit2gtk-4.0-37 2.18.5-0ubuntu0.17.04.1
libjavascriptcoregtk-4.0-18 2.18.5-0ubuntu0.17.04.1
Ubuntu 16.04 LTS:
libwebkit2gtk-4.0-37 2.18.5-0ubuntu0.16.04.1
libjavascriptcoregtk-4.0-18 2.18.5-0ubuntu0.16.04.1
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart any applications
that use WebKitGTK+, such as Epiphany, to make all the necessary changes.
References
CVE-2017-5715, CVE-2017-5753
Continue reading...
11th January, 2018
webkit2gtk vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 17.10
- Ubuntu 17.04
- Ubuntu 16.04 LTS
WebKitGTK+ could be made to expose sensitive information.
Software description
- webkit2gtk - Web content engine library for GTK+
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 information from other
domains, bypassing same-origin restrictions. (CVE-2017-5753, CVE-2017-5715)
Update instructions
The problem can be corrected by updating your system to the following package version:
Ubuntu 17.10:
libwebkit2gtk-4.0-37 2.18.5-0ubuntu0.17.10.1
libjavascriptcoregtk-4.0-18 2.18.5-0ubuntu0.17.10.1
Ubuntu 17.04:
libwebkit2gtk-4.0-37 2.18.5-0ubuntu0.17.04.1
libjavascriptcoregtk-4.0-18 2.18.5-0ubuntu0.17.04.1
Ubuntu 16.04 LTS:
libwebkit2gtk-4.0-37 2.18.5-0ubuntu0.16.04.1
libjavascriptcoregtk-4.0-18 2.18.5-0ubuntu0.16.04.1
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart any applications
that use WebKitGTK+, such as Epiphany, to make all the necessary changes.
References
CVE-2017-5715, CVE-2017-5753
Continue reading...
