Firefox could be made to crash or run programs as your login if it opened a malicious website.
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 via application crash, bypass same-origin restrictions, conduct cross-site scripting (XSS) attacks, install lightweight themes without user interaction, spoof the filename in the downloads panel, or execute arbitrary code. (CVE-2018-5150, CVE-2018-5151, CVE-2018-5153, CVE-2018-5154, CVE-2018-5155, CVE-2018-5157, CVE-2018-5158, CVE-2018-5159, CVE-2018-5160, CVE-2018-5163, CVE-2018-5164, CVE-2018-5168, CVE-2018-5173, CVE-2018-5175, CVE-2018-5177, CVE-2018-5180)
11 May 2018
A security issue affects these releases of Ubuntu and its derivatives:
Firefox could be made to crash or run programs as your login if it opened a malicious website.
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 via application crash, bypass same-origin restrictions, conduct cross-site scripting (XSS) attacks, install lightweight themes without user interaction, spoof the filename in the downloads panel, or execute arbitrary code. (CVE-2018-5150, CVE-2018-5151, CVE-2018-5153, CVE-2018-5154, CVE-2018-5155, CVE-2018-5157, CVE-2018-5158, CVE-2018-5159, CVE-2018-5160, CVE-2018-5163, CVE-2018-5164, CVE-2018-5168, CVE-2018-5173, CVE-2018-5175, CVE-2018-5177, CVE-2018-5180)
Multiple security issues were discovered with WebExtensions. If a user were tricked in to installing a specially crafted extension, an attacker could potentially exploit these to obtain sensitive information, or bypass security restrictions. (CVE-2018-5152, CVE-2018-5166)
It was discovered that the web console and JavaScript debugger incorrectly linkified chrome: and javascript URLs. If a user were tricked in to clicking a specially crafted link, an attacker could potentially exploit this to conduct cross-site scripting (XSS) attacks. (CVE-2018-5167)
It was discovered that dragging and dropping link text on to the home button could set the home page to include chrome pages. If a user were tricked in to dragging and dropping a specially crafted link on to the home button, an attacker could potentially exploit this bypass security restrictions. (CVE-2018-5169)
It was discovered that the Live Bookmarks page and PDF viewer would run script pasted from the clipboard. If a user were tricked in to copying and pasting specially crafted text, an attacker could potentially exploit this to conduct cross-site scripting (XSS) attacks. (CVE-2018-5172)
It was discovered that the JSON viewer incorrectly linkified javascript: URLs. If a user were tricked in to clicking on a specially crafted link, an attacker could potentially exploit this to obtain sensitive information. (CVE-2018-5176)
It was discovered that dragging a file: URL on to a tab that is running in a different process would cause the file to open in that process. If a user were tricked in to dragging a file: URL, an attacker could potentially exploit this to bypass intended security policies. (CVE-2018-5181)
It was discovered that dragging text that is a file: URL on to the addressbar would open the specified file. If a user were tricked in to dragging specially crafted text on to the addressbar, an attacker could potentially exploit this to bypass intended security policies. (CVE-2018-5182)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to restart Firefox to make all the necessary changes.
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