Mozilla Gecko before 5.0, as used in Firefox before 5.0 and Thunderbird before 5.0, does not block use of a cross-domain image as a WebGL texture, which allows remote attackers to obtain approximate copies of arbitrary images via a timing attack involving a crafted WebGL fragment shader.

The installed version of SeaMonkey is earlier than 2.2.0.  As such, it is potentially affected by the following security issues :

  - Errors in the WebGL implementation can allow the     loading of WebGL textures from cross-domain images or     allow the crash of the application and execution of     arbitrary code. (CVE-2011-2366, CVE-2011-2368)

  - An out-of-bounds read error exists in the WebGL     implementation that can lead to crashes and may allow     an attacker to read arbitrary data from the GPU,     including that of other processes. (CVE-2011-2367)

  - An error exists in the decoding of HTML-encoded     entities contained in SVG elements. This error could lead     to cross-site scripting attacks. (CVE-2011-2369)

  - An unspecified error exists that allows non-whitelisted     sites to trigger an install dialog for add-ons and     themes. (CVE-2011-2370)

  - When a JavaScript Array object has its length set to an     extremely large value, the iteration of array elements     that occurs when its reduceRight method is called could     result in code execution due to an invalid index value     being used. (CVE-2011-2371)

  - A use-after-free error when viewing XUL documents with     scripts disabled could lead to code execution.
    (CVE-2011-2373)

  - Multiple memory safety issues can lead to application     crashes and possibly remote code execution.
    (CVE-2011-2375)

  - A memory corruption issue due to multipart /     x-mixed-replace images could lead to memory corruption.
    (CVE-2011-2377)

The installed version of Firefox is earlier than 5.0 and thus, is potentially affected by the following security issues :

  - Multiple memory safety issues can lead to application     crashes and possibly remote code execution.
    (CVE-2011-2374, CVE-2011-2375)

  - A use-after-free issue when viewing XUL documents with     scripts disabled could lead to code execution.
    (CVE-2011-2373)

  - A memory corruption issue due to multipart /     x-mixed-replace images could lead to memory corruption.
    (CVE-2011-2377)

  - When a JavaScript Array object has its length set to an     extremely large value, the iteration of array elements     that occurs when its reduceRight method is called could     result in code execution due to an invalid index value     being used. (CVE-2011-2371)

  - It is possible for an image from a different domain to     be loaded into a WebGL texture which could be used to     steal image data from a different site. (CVE-2011-2366,     CVE-2011-2598)

  - An out-of-bounds read issue and an invalid write issue     could cause the application to crash. (CVE-2011-2367,     CVE-2011-2368)

  - HTML-encoded entities are improperly decoded when     displayed inside SVG elements which could lead to     cross-site scripting attacks. (CVE-2011-2369)

  - It is possible for a non-whitelisted site to trigger an     install dialog for add-ons and themes. (CVE-2011-2370)

USN-1157-1 fixed vulnerabilities in Firefox. Unfortunately, this update produced the side effect of pulling in Firefox on some systems that did not have it installed during a dist-upgrade due to changes in the Ubuntu language packs. This update fixes the problem. We apologize for the inconvenience.

Bob Clary, Kevin Brosnan, Gary Kwong, Jesse Ruderman, Christian Biesinger, Bas Schouten, Igor Bukanov, Bill McCloskey, Olli Pettay, Daniel Veditz and Marcia Knous discovered multiple memory vulnerabilities in the browser rendering engine. An attacker could possibly execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2011-2374, CVE-2011-2375)

Martin Barbella discovered that under certain conditions, viewing a XUL document while JavaScript was disabled caused deleted memory to be accessed. An attacker could potentially use this to crash Firefox or execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2011-2373)

Jordi Chancel discovered a vulnerability on multipart/x-mixed-replace images due to memory corruption.
An attacker could potentially use this to crash Firefox or execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2011-2377)

Chris Rohlf and Yan Ivnitskiy discovered an integer overflow vulnerability in JavaScript Arrays. An attacker could potentially use this to execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2011-2371)

It was discovered that Firefox's WebGL textures did not honor same-origin policy. If a user were tricked into viewing a malicious site, an attacker could potentially view image data from a different site. (CVE-2011-2366)

Christoph Diehl discovered an out-of-bounds read vulnerability in WebGL code. An attacker could potentially read data that other processes had stored in the GPU.
(CVE-2011-2367)

Christoph Diehl discovered an invalid write vulnerability in WebGL code. An attacker could potentially use this to execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2011-2368)

It was discovered that an unauthorized site could trigger an installation dialog for addons and themes. If a user were tricked into viewing a malicious site, an attacker could possibly trick the user into installing a malicious addon or theme. (CVE-2011-2370)

Mario Heiderich discovered a vulnerability in displaying decoded HTML-encoded entities inside SVG elements. An attacker could utilize this to perform cross-site scripting attacks. (CVE-2011-2369).

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.

USN-1157-1 fixed vulnerabilities in Firefox. This update provides updated packages for use with Firefox 5.

Bob Clary, Kevin Brosnan, Gary Kwong, Jesse Ruderman, Christian Biesinger, Bas Schouten, Igor Bukanov, Bill McCloskey, Olli Pettay, Daniel Veditz and Marcia Knous discovered multiple memory vulnerabilities in the browser rendering engine. An attacker could possibly execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2011-2374, CVE-2011-2375)

Martin Barbella discovered that under certain conditions, viewing a XUL document while JavaScript was disabled caused deleted memory to be accessed. An attacker could potentially use this to crash Firefox or execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2011-2373)

Jordi Chancel discovered a vulnerability on multipart/x-mixed-replace images due to memory corruption.
An attacker could potentially use this to crash Firefox or execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2011-2377)

Chris Rohlf and Yan Ivnitskiy discovered an integer overflow vulnerability in JavaScript Arrays. An attacker could potentially use this to execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2011-2371)

It was discovered that Firefox's WebGL textures did not honor same-origin policy. If a user were tricked into viewing a malicious site, an attacker could potentially view image data from a different site. (CVE-2011-2366)

Christoph Diehl discovered an out-of-bounds read vulnerability in WebGL code. An attacker could potentially read data that other processes had stored in the GPU.
(CVE-2011-2367)

Christoph Diehl discovered an invalid write vulnerability in WebGL code. An attacker could potentially use this to execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2011-2368)

It was discovered that an unauthorized site could trigger an installation dialog for addons and themes. If a user were tricked into viewing a malicious site, an attacker could possibly trick the user into installing a malicious addon or theme. (CVE-2011-2370)

Mario Heiderich discovered a vulnerability in displaying decoded HTML-encoded entities inside SVG elements. An attacker could utilize this to perform cross-site scripting attacks. (CVE-2011-2369).

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.

Bob Clary, Kevin Brosnan, Gary Kwong, Jesse Ruderman, Christian Biesinger, Bas Schouten, Igor Bukanov, Bill McCloskey, Olli Pettay, Daniel Veditz and Marcia Knous discovered multiple memory vulnerabilities in the browser rendering engine. An attacker could possibly execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2011-2374, CVE-2011-2375)

Martin Barbella discovered that under certain conditions, viewing a XUL document while JavaScript was disabled caused deleted memory to be accessed. An attacker could potentially use this to crash Firefox or execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2011-2373)

Jordi Chancel discovered a vulnerability on multipart/x-mixed-replace images due to memory corruption. An attacker could potentially use this to crash Firefox or execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2011-2377)

Chris Rohlf and Yan Ivnitskiy discovered an integer overflow vulnerability in JavaScript Arrays. An attacker could potentially use this to execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2011-2371)

It was discovered that Firefox's WebGL textures did not honor same-origin policy. If a user were tricked into viewing a malicious site, an attacker could potentially view image data from a different site. (CVE-2011-2366)

Christoph Diehl discovered an out-of-bounds read vulnerability in WebGL code. An attacker could potentially read data that other processes had stored in the GPU. (CVE-2011-2367)

Christoph Diehl discovered an invalid write vulnerability in WebGL code. An attacker could potentially use this to execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2011-2368)

It was discovered that an unauthorized site could trigger an installation dialog for addons and themes. If a user were tricked into viewing a malicious site, an attacker could possibly trick the user into installing a malicious addon or theme. (CVE-2011-2370)

Mario Heiderich discovered a vulnerability in displaying decoded HTML-encoded entities inside SVG elements. An attacker could utilize this to perform cross-site scripting attacks. (CVE-2011-2369).

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.

The remote host has a web browser installed that is vulnerable to multiple attack vectors.

Versions of Firefox greater than 4.0 and earlier than 5.0 are potentially affected by multiple vulnerabilities : 

  - Multiple memory safety issues can lead to application crashes and possibly remote code execution. (CVE-2011-2374, CVE-2011-2375, CVE-2011-2605)

  - A use-after-free issue when viewing XUL documents with scripts disabled could lead to code execution. (CVE-2011-2373)

  - A memory corruption issue due to multipart/x-mixed-replace images could lead to memory corruption. (CVE-2011-2377)

  - When a JavaScript Array object has its length set to an extremely large value, the iteration of array elements that occurs when its reduceRight method is called could result in code execution due to an invalid index value being used. (CVE-2011-2371)

  - It is possible for an image from a different domain to be loaded into a WebGL texture which could be used to steal image data from a different site. (CVE-2011-2366)

  - An out-of-bounds read issue and an invalid write issue could cause the application to crash. (CVE-2011-2367, CVE-2011-2368)

  - HTML-encoded entities are improperly decoded when displayed inside SVG elements which could lead to cross-site scripting attacks. (CVE-2011-2369)

  - It is possible for a non-whitelisted site to trigger an install dialog for add-ons and themes. (CVE-2011-2370)

The remote host has a web browser installed that is vulnerable to multiple attack vectors.  

Versions of Firefox greater than 4.0 and earlier than 5.0 are potentially affected by multiple vulnerabilities : 

 - Multiple memory safety issues can lead to application crashes and possibly remote code execution. (CVE-2011-2374, CVE-2011-2375, CVE-2011-2605)
 - A use-after-free issue when viewing XUL documents with scripts disabled could lead to code execution. (CVE-2011-2373)
 - A memory corruption issue due to multipart/x-mixed-replace images could lead to memory corruption. (CVE-2011-2377)
 - When a JavaScript Array object has its length set to an extremely large value, the iteration of array elements that occurs when its reduceRight method is called could result in code execution due to an invalid index value being used. (CVE-2011-2371)
 - It is possible for an image from a different domain to be loaded into a WebGL texture which could be used to steal image data from a different site. (CVE-2011-2366)
 - An out-of-bounds read issue and an invalid write issue could cause the application to crash. (CVE-2011-2367, CVE-2011-2368)
 - HTML-encoded entities are improperly decoded when displayed inside SVG elements which could lead to cross-site scripting attacks. (CVE-2011-2369)
 - It is possible for a non-whitelisted site to trigger an install dialog for add-ons and themes. (CVE-2011-2370)

The installed version of Firefox 4 is potentially affected by the following security issues :

  - Multiple memory safety issues can lead to application     crashes and possibly remote code execution.
    (CVE-2011-2374, CVE-2011-2375)

  - A use-after-free issue when viewing XUL documents with     scripts disabled could lead to code execution.
    (CVE-2011-2373)

  - A memory corruption issue due to multipart /     x-mixed-replace images could lead to memory corruption.
    (CVE-2011-2377)

  - When a JavaScript Array object has its length set to an     extremely large value, the iteration of array elements     that occurs when its reduceRight method is called could     result in code execution due to an invalid index value     being used. (CVE-2011-2371)

  - It is possible for an image from a different domain to     be loaded into a WebGL texture which could be used to     steal image data from a different site. (CVE-2011-2366,     CVE-2011-2598)

  - An out-of-bounds read issue and an invalid write issue     could cause the application to crash. (CVE-2011-2367,     CVE-2011-2368)

  - HTML-encoded entities are improperly decoded when     displayed inside SVG elements which could lead to     cross-site scripting attacks. (CVE-2011-2369)

  - It is possible for a non-whitelisted site to trigger an     install dialog for add-ons and themes. (CVE-2011-2370)

ID	Name	Product	Family	Severity
55884	SeaMonkey < 2.2.0 Multiple Vulnerabilities	Nessus	Windows	high
55419	Firefox < 5.0 Multiple Vulnerabilities (Mac OS X)	Nessus	MacOS X Local Security Checks	high
55413	Ubuntu 11.04 : firefox regression (USN-1157-3)	Nessus	Ubuntu Local Security Checks	critical
55409	Ubuntu 11.04 : mozvoikko, ubufox, webfav update (USN-1157-2)	Nessus	Ubuntu Local Security Checks	critical
55408	Ubuntu 11.04 : firefox vulnerabilities (USN-1157-1)	Nessus	Ubuntu Local Security Checks	critical
801231	Mozilla Firefox > 4.0 and < 5.0 Multiple Vulnerabilities	Log Correlation Engine	Web Clients	high
5965	Mozilla Firefox > 4.0 and < 5.0 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	high
55288	Firefox 4 Multiple Vulnerabilities	Nessus	Windows	high

Detections

Analytics

CVE-2011-2366

high

Tenable Plugins

high

high

critical

critical

critical

high

high

high