This Metasploit module gains remote code execution on Firefox 15-22 by abusing two separate Javascript-related vulnerabilities to ultimately inject malicious Javascript code into a context running with chrome:// privileges.
723732f5e9f85d7844a5395a8a59e9af072256440c604cfc1138fd3468e2d08dOn versions of Firefox from 5.0 to 15.0.1, the InstallTrigger global, when given invalid input, would throw an exception that did not have an __exposedProps__ property set. By re-setting this property on the exception object's prototype, the chrome-based defineProperty method is made available. With the defineProperty method, functions belonging to window and document can be overriden with a function that gets called from chrome-privileged context. From here, another vulnerability in the crypto.generateCRMFRequest function is used to "peek" into the context's private scope. Since the window does not have a chrome:// URL, the insecure parts of Components.classes are not available, so instead the AddonManager API is invoked to silently install a malicious plugin.
f9c391aa7b550b10c8e9686f804da688eca5b3b20ea450df0a1b9e0dac71ac00Debian Linux Security Advisory 2746-1 - Multiple security issues have been found in Icedove, Debian's version of the Mozilla Thunderbird mail and news client. Multiple memory safety errors, missing permission checks and other implementation errors may lead to the execution of arbitrary code or cross-site scripting.
066d7c113b0c85a7655f00b154282b537f716ce919215cbc842ab76b2915d745Ubuntu Security Notice 1925-1 - Jeff Gilbert and Henrik Skupin discovered multiple memory safety issues in Thunderbird. If the user were tricked in to opening a specially crafted message with scripting enabled, an attacker could possibly exploit these to cause a denial of service via application crash, or potentially execute arbitrary code with the privileges of the user invoking Thunderbird. It was discovered that a document's URI could be set to the URI of a different document. If a user had scripting enabled, an attacker could potentially exploit this to conduct cross-site scripting (XSS) attacks. Various other issues were also addressed.
4840655df1aa4f3384933ccb3c2e90a78306e806597ac7d624680ac7c17cdc1aRed Hat Security Advisory 2013-1140-01 - Mozilla Firefox is an open source web browser. XULRunner provides the XUL Runtime environment for Mozilla Firefox. Several flaws were found in the processing of malformed web content. A web page containing malicious content could cause Firefox to crash or, potentially, execute arbitrary code with the privileges of the user running Firefox. A flaw was found in the way Firefox generated Certificate Request Message Format requests. An attacker could use this flaw to perform cross-site scripting attacks or execute arbitrary code with the privileges of the user running Firefox.
d1ea76370636127b4864079e126d370741fa0005db39cf1d9669d415ea313881Red Hat Security Advisory 2013-1142-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. Several flaws were found in the processing of malformed content. Malicious content could cause Thunderbird to crash or, potentially, execute arbitrary code with the privileges of the user running Thunderbird. A flaw was found in the way Thunderbird generated Certificate Request Message Format requests. An attacker could use this flaw to perform cross-site scripting attacks or execute arbitrary code with the privileges of the user running Thunderbird.
6e679b599e006bf8213654491aeb2584f7fe6c4b42178ee60bdfac7f93a22313Debian Linux Security Advisory 2735-1 - Multiple security issues have been found in Iceweasel, Debian's version missing permission checks and other implementation errors may lead to the execution of arbitrary code, cross-site scripting, privilege escalation, bypass of the same-origin policy or the installation of malicious addons.
7aaf510fafe53ade56d45dadc0e018b9cc4df241abe27e5dd5d98ed9b2e52245Mandriva Linux Security Advisory 2013-210 - Mozilla developers identified and fixed several memory safety bugs in the browser engine used in Firefox and other Mozilla-based products. Some of these bugs showed evidence of memory corruption under certain circumstances, and we presume that with enough effort at least some of these could be exploited to run arbitrary code. Mozilla security researcher moz_bug_r_a4 reported that through an interaction of frames and browser history it was possible to make the browser believe attacker-supplied content came from the location of a previous page in browser history. This allows for cross-site scripting attacks by loading scripts from a misrepresented malicious site through relative locations and the potential access of stored credentials of a spoofed site. Mozilla security researcher moz_bug_r_a4 reported a mechanism to execute arbitrary code or a cross-site scripting attack when Certificate Request Message Format request is generated in certain circumstances. Security researcher Cody Crews reported that some Javascript components will perform checks against the wrong uniform resource identifier before performing security sensitive actions. This will return an incorrect location for the originator of the call. This could be used to bypass same-origin policy, allowing for cross-site scripting or the installation of malicious add-ons from third-party pages. Mozilla community member Federico Lanusse reported a mechanism where a web worker can violate same-origin policy and bypass cross-origin checks through XMLHttpRequest. This could allow for cross-site scripting attacks by web workers. Security researcher Georgi Guninski reported an issue with Java applets where in some circumstances the applet could access files on the local system when loaded using the a file:/// URI and violate file origin policy due to interaction with the codebase parameter. This affects applets running on the local file system. Mozilla developer John Schoenick later discovered that fixes for this issue were inadequate and allowed the invocation of Java applets to bypass security checks in additional circumstances. This could lead to untrusted Java applets having read-only access on the local files system if used in conjunction with a method to download a file to a known or guessable path. The mozilla firefox packages has been upgraded to the latest ESR version which is unaffected by these security flaws.
06e1eccc8317c48199bbdf0816b441552d6c5a399b5a21ddd3ebe80a6bcf1ac9Ubuntu Security Notice 1924-1 - Jeff Gilbert, Henrik Skupin, Ben Turner, Christian Holler, Andrew McCreight, Gary Kwong, Jan Varga and Jesse Ruderman discovered multiple memory safety issues in Firefox. If the user were tricked in to opening a specially crafted page, an attacker could possibly exploit these to cause a denial of service via application crash, or potentially execute arbitrary code with the privileges of the user invoking Firefox. A use-after-free bug was discovered when the DOM is modified during a SetBody mutation event. If the user were tricked in to opening a specially crafted page, an attacker could potentially exploit this to execute arbitrary code with the privileges of the user invoking Firefox. Various other issues were also addressed.
2f541122cf4292e498f025c0357ccebe409fbe0e6d41fb8080dadc4db0a84b7bUbuntu Security Notice 1924-2 - USN-1924-1 fixed vulnerabilities in Firefox. This update provides the corresponding updates for Ubufox and Unity Firefox Extension. Jeff Gilbert, Henrik Skupin, Ben Turner, Christian Holler, Andrew McCreight, Gary Kwong, Jan Varga and Jesse Ruderman discovered multiple memory safety issues in Firefox. If the user were tricked in to opening a specially crafted page, an attacker could possibly exploit these to cause a denial of service via application crash, or potentially execute arbitrary code with the privileges of the user invoking Firefox. A use-after-free bug was discovered when the DOM is modified during a SetBody mutation event. If the user were tricked in to opening a specially crafted page, an attacker could potentially exploit this to execute arbitrary code with the privileges of the user invoking Firefox. A use-after-free bug was discovered when generating a CRMF request with certain parameters. If the user were tricked in to opening a specially crafted page, an attacker could potentially exploit this to execute arbitrary code with the privileges of the user invoking Firefox. Aki Helin discovered a crash when decoding a WAV file in some circumstances. An attacker could potentially exploit this to cause a denial of service. It was discovered that a document's URI could be set to the URI of a different document. An attacker could potentially exploit this to conduct cross-site scripting (XSS) attacks. A flaw was discovered when generating a CRMF request in certain circumstances. An attacker could potentially exploit this to conduct cross-site scripting (XSS) attacks, or execute arbitrary code with the privileges of the user invoking Firefox. Bobby Holley discovered that XBL scopes could be used to circumvent XrayWrappers in certain circumstances. An attacked could potentially exploit this to conduct cross-site scripting (XSS) attacks or cause undefined behaviour. Cody Crews discovered that some Javascript components performed security checks against the wrong URI, potentially bypassing same-origin policy restrictions. An attacker could exploit this to conduct cross-site scripting (XSS) attacks or install addons from a malicious site. Federico Lanusse discovered that web workers could bypass cross-origin checks when using XMLHttpRequest. An attacker could potentially exploit this to conduct cross-site scripting (XSS) attacks. Georgi Guninski and John Schoenick discovered that Java applets could access local files under certain circumstances. An attacker could potentially exploit this to steal confidential data. Various other issues were also addressed.
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