The version of Opera installed on the remote host is earlier than 10.61.  Such versions are potentially affected by the following issues :

  - A heap overflow when performing painting operations on     an HTML5 canvas can result in execution of arbitrary     code. (966)

  - An issue with tab focus is open to an attack     where it is used to obscure a download dialog that is in     another tab. The user can be tricked into clicking on     buttons in the dialog, resulting in the downloaded file     being executed. (967)

  - Certain types of content concerning the news feed     preview do not have their scripts removed properly,     possibly resulting in subscription of feeds without     the user's consent. (968)

  - Loading an animated PNG image may cause high CPU usage     with no response from the browser. (CVE-2010-3021)

  - An error exists in the handling of 'SELECT' HTML     elements having a very large 'size' attribute. This     error can allow memory corruption and possibly allows     remote code execution. (CVE-2011-1824)

This update of opera fixes the following vulnerabilities :

  - CVE-2010-2576: CVSS v2 Base Score: 6.8 (CWE-94):
    unexpected changes in tab focus could be used to run     programs from the Internet, as reported by Jakob Balle     and Sven Krewitt of Secunia

  - CVE-2010-3019: CVSS v2 Base Score: 9.3 (CWE-119): heap     buffer overflow in HTML5 canvas could be used to execute     arbitrary code, as reported by Kuzzcc

  - CVE-2010-3020: CVSS v2 Base Score: 5.0 (CWE-264): news     feed preview could subscribe to feeds without     interaction, as reported by Alexios Fakos

  - CVE-2010-3021: CVSS v2 Base Score: 4.3 (CWE-399): remote     attackers could trigger a remote denial of service (CPU     consumption and application hang) via an animated PNG     image

The remote host is affected by the vulnerability described in GLSA-201206-03 (Opera: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in Opera. Please review       the CVE identifiers referenced below for details.
  Impact :

    A remote attacker could entice a user to open a specially crafted web       page, possibly resulting in execution of arbitrary code with the       privileges of the process or a Denial of Service condition. A remote       attacker may be able to: trick users into downloading and executing       arbitrary files, bypass intended access restrictions, spoof trusted       content, spoof URLs, bypass the Same Origin Policy, obtain sensitive       information, force subscriptions to arbitrary feeds, bypass the popup       blocker, bypass CSS filtering, conduct cross-site scripting attacks, or       have other unknown impact.
    A local attacker could perform symlink attacks to overwrite arbitrary       files with the privileges of the user running the application or possibly       obtain sensitive information.
    A physically proximate attacker may be able to access an email account.
  Workaround :

    There is no known workaround at this time.

The remote host is running the Opera web browser.  

Versions of Opera earlier than 10.61 are potentially affected by multiple vulnerabilities :

  - A heap overflow when performing painting operations on an HTML5 canvas can result in execution of arbitrary code, (KB 966)

  - An issue with tab focus is open to an attack where it is used to obscure a download dialog that is in another tab.  The user can be tricked into clicking buttons in the dialog, resulting in the downloaded file being executed. (KB 967)

  - Certain types of content concerning the news feed preview do not have their scripts removed properly, possibly resulting in subscription of feeds without the user's consent. (KB 968)

Loading an animated PNG image may cause high CPU usage with no response from the browser. (CVE-2010-3021)

A memory corruption issue exists when handling an html page with a very large SIZE parameter in the SELECT tag. (CVE-2011-1824) 

The remote host is running the Opera web browser.

Versions of Opera earlier than 10.61 are potentially affected by multiple vulnerabilities :

  - A heap overflow when performing painting operations on an HTML5 canvas can result in execution of arbitrary code, (KB 966)

  - An issue with tab focus is open to an attack where it is used to obscure a download dialog that is in another tab.  The user can be tricked into clicking buttons in the dialog, resulting in the downloaded file being executed. (KB 967)

  - Certain types of content concerning the news feed preview do not have their scripts removed properly, possibly resulting in subscription of feeds without the user's consent. (KB 968)

Loading an animated PNG image may cause high CPU usage with no response from the browser. (CVE-2010-3021)

A memory corruption issue exists when handling an html page with a very large SIZE parameter in the SELECT tag. (CVE-2011-1824)

ID	Name	Product	Family	Published	Updated	Severity
48317	Opera < 10.61 Multiple Vulnerabilities	Nessus	Windows	8/12/2010	11/15/2018	high
75691	openSUSE Security Update : opera (openSUSE-SU-2010:0540-1)	Nessus	SuSE Local Security Checks	6/13/2014	1/14/2021	high
59631	GLSA-201206-03 : Opera: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	6/21/2012	1/6/2021	critical
48430	openSUSE Security Update : opera (openSUSE-SU-2010:0540-1)	Nessus	SuSE Local Security Checks	8/25/2010	1/14/2021	high
48431	openSUSE Security Update : opera (openSUSE-SU-2010:0540-1)	Nessus	SuSE Local Security Checks	8/25/2010	1/14/2021	high
5626	Opera < 10.61 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	8/12/2010	3/6/2019	medium
800844	Opera < 10.61 Multiple Vulnerabilities	Log Correlation Engine	Web Clients	8/12/2010		high

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high