Synopsis
The remote Ubuntu host is missing a security-related patch.
Description
Christian Holler, David Major, Jesse Ruderman, Tyson Smith, Boris Zbarsky, Randell Jesup, Olli Pettay, Karl Tomlinson, Jeff Walden, and Gary Kwong 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 arbitrary code with the privileges of the user invoking Thunderbird. (CVE-2015-4513)
Tyson Smith and David Keeler discovered a use-after-poison and buffer overflow in NSS. An attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Thunderbird. (CVE-2015-7181, CVE-2015-7182)
Ryan Sleevi discovered an integer overflow in NSPR. An attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Thunderbird. (CVE-2015-7183)
Michal Bentkowski discovered that adding white-space to hostnames that are IP addresses can bypass same-origin protections. If a user were tricked in to opening a specially crafted website in a browser-like context, an attacker could potentially exploit this to conduct cross-site scripting (XSS) attacks. (CVE-2015-7188)
Looben Yang discovered a buffer overflow during script interactions with the canvas element in some circumstances. If a user were tricked in to opening a specially crafted website in a browser-like context, an attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Thunderbird. (CVE-2015-7189)
Shinto K Anto discovered that CORS preflight is bypassed when receiving non-standard Content-Type headers in some circumstances. If a user were tricked in to opening a specially crafted website in a browser-like context, an attacker could potentially exploit this to bypass same-origin restrictions. (CVE-2015-7193)
Gustavo Grieco discovered a buffer overflow in libjar in some circumstances. If a user were tricked in to opening a specially crafted website in a browser-like context, an attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Thunderbird. (CVE-2015-7194)
Ehsan Akhgari discovered a mechanism for a web worker to bypass secure requirements for web sockets. If a user were tricked in to opening a specially crafted website in a browser-like context, an attacker could exploit this to bypass the mixed content web socket policy.
(CVE-2015-7197)
Ronald Crane discovered several vulnerabilities through code-inspection. If a user were tricked in to opening a specially crafted website in a browser-like context, an attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Thunderbird. (CVE-2015-7198, CVE-2015-7199, CVE-2015-7200).
Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
Solution
Update the affected thunderbird package.