The installed version of Firefox is earlier than 3.5.19.  Such versions are potentially affected by the following security issues :

  - Multiple use-after-free errors exist in the handling of     the object attributes 'mChannel', 'mObserverList' and     'nsTreeRange'. (CVE-2011-0065, CVE-2011-0066,     CVE-2011-0073)

  - An error exists in the handling of Java applets that     can allow sensitive form history data to be accessed.
    (CVE-2011-0067)

  - An error in the resource protocol can allow a directory     traversal attack. (CVE-2011-0071)

  - Multiple memory safety issues can lead to application     crashes and possibly remote code execution.
    (CVE-2011-0069, CVE-2011-0070, CVE-2011-0072,     CVE-2011-0074, CVE-2011-0075, CVE-2011-0077,     CVE-2011-0078, CVE-2011-0080)

  - An information disclosure vulnerability exists in the     'xsltGenerateIdFunction' function in the included     libxslt library. (CVE-2011-1202)

Mozilla XULRunner 1.9.1 was updated to the 1.9.1.19 security release.

  - 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. Credits. (MFSA 2011-12)

  - Mozilla developer Scoobidiver reported a memory safety     issue which affected Firefox 4 and Firefox 3.6.
    (CVE-2011-0081)

    The web development team of Alcidion reported a crash     that affected Firefox 4, Firefox 3.6 and Firefox 3.5.
    (CVE-2011-0069)

    Ian Beer reported a crash that affected Firefox 4,     Firefox 3.6 and Firefox 3.5. (CVE-2011-0070)

    Mozilla developers Bob Clary, Henri Sivonen, Marco     Bonardo, Mats Palmgren and Jesse Ruderman reported     memory safety issues which affected Firefox 3.6 and     Firefox 3.5. (CVE-2011-0080)

    Aki Helin reported memory safety issues which affected     Firefox 3.6 and Firefox 3.5. (CVE-2011-0074 /     CVE-2011-0075)

    Ian Beer reported memory safety issues which affected     Firefox 3.6 and Firefox 3.5. (CVE-2011-0077 /     CVE-2011-0078)

    Martin Barbella reported a memory safety issue which     affected Firefox 3.6 and Firefox 3.5. (CVE-2011-0072)

  - Security researcher regenrecht reported several dangling     pointer vulnerabilities via TippingPoint's Zero Day     Initiative. (MFSA 2011-13 / CVE-2011-0065 /     CVE-2011-0066 / CVE-2011-0073)

  - Security researcher Paul Stone reported that a Java     applet could be used to mimic interaction with form     autocomplete controls and steal entries from the form     history. (MFSA 2011-14 / CVE-2011-0067)

  - Chris Evans of the Chrome Security Team reported that     the XSLT generate-id() function returned a string that     revealed a specific valid address of an object on the     memory heap. It is possible that in some cases this     address would be valuable information that could be used     by an attacker while exploiting a different memory     corruption but, in order to make an exploit more     reliable or work around mitigation features in the     browser or operating system. (MFSA 2011-18 /     CVE-2011-1202)

It was discovered that there was a vulnerability in the memory handling of certain types of content. An attacker could exploit this to possibly run arbitrary code as the user running Firefox.
(CVE-2011-0081)

It was discovered that Firefox incorrectly handled certain JavaScript requests. An attacker could exploit this to possibly run arbitrary code as the user running Firefox. (CVE-2011-0069)

Ian Beer discovered a vulnerability in the memory handling of a certain types of documents. An attacker could exploit this to possibly run arbitrary code as the user running Firefox. (CVE-2011-0070)

Bob Clary, Henri Sivonen, Marco Bonardo, Mats Palmgren and Jesse Ruderman discovered several memory vulnerabilities. An attacker could exploit these to possibly run arbitrary code as the user running Firefox. (CVE-2011-0080)

Aki Helin discovered multiple vulnerabilities in the HTML rendering code. An attacker could exploit these to possibly run arbitrary code as the user running Firefox. (CVE-2011-0074, CVE-2011-0075)

Ian Beer discovered multiple overflow vulnerabilities. An attacker could exploit these to possibly run arbitrary code as the user running Firefox. (CVE-2011-0077, CVE-2011-0078)

Martin Barbella discovered a memory vulnerability in the handling of certain DOM elements. An attacker could exploit this to possibly run arbitrary code as the user running Firefox. (CVE-2011-0072)

It was discovered that there were use-after-free vulnerabilities in Firefox's mChannel and mObserverList objects. An attacker could exploit these to possibly run arbitrary code as the user running Firefox. (CVE-2011-0065, CVE-2011-0066)

It was discovered that there was a vulnerability in the handling of the nsTreeSelection element. An attacker serving malicious content could exploit this to possibly run arbitrary code as the user running Firefox. (CVE-2011-0073)

Paul Stone discovered a vulnerability in the handling of Java applets.
An attacker could use this to mimic interaction with form autocomplete controls and steal entries from the form history. (CVE-2011-0067)

Soroush Dalili discovered a vulnerability in the resource: protocol.
This could potentially allow an attacker to load arbitrary files that were accessible to the user running Firefox. (CVE-2011-0071)

Chris Evans discovered a vulnerability in Firefox's XSLT generate-id() function. An attacker could possibly use this vulnerability to make other attacks more reliable. (CVE-2011-1202).

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 Oracle Linux 5 / 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2011-0471 advisory.

    firefox:

    [3.6.17-1.0.1.el6_0]
    - Added firefox-oracle-default-prefs.js and removed firefox-redhat-default-prefs.js

    [3.6.17-1]
    - Update to 3.6.17

    xulrunner:

    [1.9.2.17-4.0.1.el6_0]
    - Replace xulrunner-redhat-default-prefs.js with       xulrunner-oracle-default-prefs.js

    [1.9.2.17-4]
    - Rebuild

    [1.9.2.17-3]
    - Update to 1.9.2.17

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Mozilla XULRunner 1.9.2 was updated to the 1.9.2.17 security release.

MFSA 2011-12: 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. Credits

Mozilla developer Scoobidiver reported a memory safety issue which affected Firefox 4 and Firefox 3.6 (CVE-2011-0081)

The web development team of Alcidion reported a crash that affected Firefox 4, Firefox 3.6 and Firefox 3.5. (CVE-2011-0069)

Ian Beer reported a crash that affected Firefox 4, Firefox 3.6 and Firefox 3.5. (CVE-2011-0070)

Mozilla developers Bob Clary, Henri Sivonen, Marco Bonardo, Mats Palmgren and Jesse Ruderman reported memory safety issues which affected Firefox 3.6 and Firefox 3.5. (CVE-2011-0080)

Aki Helin reported memory safety issues which affected Firefox 3.6 and Firefox 3.5. (CVE-2011-0074 , CVE-2011-0075)

Ian Beer reported memory safety issues which affected Firefox 3.6 and Firefox 3.5. (CVE-2011-0077 , CVE-2011-0078)

Martin Barbella reported a memory safety issue which affected Firefox 3.6 and Firefox 3.5. (CVE-2011-0072)

MFSA 2011-13 / CVE-2011-0065 / CVE-2011-0066 / CVE-2011-0073: Security researcher regenrecht reported several dangling pointer vulnerabilities via TippingPoint's Zero Day Initiative.

MFSA 2011-14 / CVE-2011-0067: Security researcher Paul Stone reported that a Java applet could be used to mimic interaction with form autocomplete controls and steal entries from the form history.

MFSA 2011-15 / CVE-2011-0076: David Remahl of Apple Product Security reported that the Java Embedding Plugin (JEP) shipped with the Mac OS X versions of Firefox could be exploited to obtain elevated access to resources on a user's system.

MFSA 2011-16 / CVE-2011-0071: Security researcher Soroush Dalili reported that the resource: protocol could be exploited to allow directory traversal on Windows and the potential loading of resources from non-permitted locations. The impact would depend on whether interesting files existed in predictable locations in a useful format.
For example, the existence or non-existence of particular images might indicate whether certain software was installed.

MFSA 2011-18 / CVE-2011-1202: Chris Evans of the Chrome Security Team reported that the XSLT generate-id() function returned a string that revealed a specific valid address of an object on the memory heap. It is possible that in some cases this address would be valuable information that could be used by an attacker while exploiting a different memory corruption but, in order to make an exploit more reliable or work around mitigation features in the browser or operating system.

ID	Name	Product	Family	Published	Updated	Severity
53593	Firefox < 3.5.19 Multiple Vulnerabilities	Nessus	Windows	4/29/2011	6/23/2026	high
53650	SuSE 10 Security Update : Mozilla XULrunner (ZYPP Patch Number 7493)	Nessus	SuSE Local Security Checks	5/5/2011	1/19/2021	critical
55070	Ubuntu 8.04 LTS / 9.10 / 10.04 LTS / 10.10 : firefox, firefox-3.0, firefox-3.5, xulrunner-1.9.2 vulnerabilities (USN-1112-1)	Nessus	Ubuntu Local Security Checks	6/13/2011	9/19/2019	critical
68261	Oracle Linux 5 / 6 : firefox (ELSA-2011-0471)	Nessus	Oracle Linux Local Security Checks	7/12/2013	10/22/2024	critical
75956	openSUSE Security Update : mozilla-js192 (mozilla-js192-4460)	Nessus	SuSE Local Security Checks	6/13/2014	1/19/2021	critical

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