Opera before 11.60 does not properly consider the number of . (dot) characters that conventionally exist in domain names of different top-level domains, which allows remote attackers to bypass the Same Origin Policy by leveraging access to a different domain name in the same top-level domain, as demonstrated by the .no or .uk domain.

opera was updated to version 11.60 to fix several security issues

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.

Opera software reports :

- Fixed a moderately severe issue; details will be disclosed at a later date

- Fixed an issue that could allow pages to set cookies or communicate cross-site for some top level domains; see our advisory

- Improved handling of certificate revocation corner cases

- Added a fix for a weakness in the SSL v3.0 and TLS 1.0 specifications, as reported by Thai Duong and Juliano Rizzo; see our advisory

- Fixed an issue where the JavaScript 'in' operator allowed leakage of cross-domain information, as reported by David Bloom; see our advisory

The remote host is running the Opera web browser.  

Versions of Opera earlier than 11.60 are potentially affected by multiple vulnerabilities : 

  - Top level domain separation rules are not honored for two-letter top level domains, e.g., .us or .uk and some three-letter top-level domains.  This error can allow sites to set the scripting context to the top level domain.  Further, this can allow sites to set and read cookies from other sites whose scripting context is set to the same top level domain. (Issue 1003)

  - An error exists in the SSLv3 and TLSv1.3 specification that can allow the BEAST attack. (Issue 1004)

  - An error exists in the implementation of the JavaScript 'in' operator that can allow sites to verify the existence of variables of sites in other domains. (Issue 1005)

  - An unspecified, moderately sever issue exists.  Details are to be disclosed by the vendor at a later date.

The version of Opera installed on the remote Windows host is prior to 11.60. It is, therefore, affected by multiple vulnerabilities :

  - An unspecified error exists that can allow URL     spoofing in the address bar. (CVE-2011-4010)

  - Top level domain separation rules are not honored for     two-letter top level domains, e.g., '.us' or '.uk', and     some three-letter top level domains. This error can     allow sites to set the scripting context to the top     level domain. Further, this can allow sites to set and     read cookies from other sites whose scripting context is     set to the same top level domain. (CVE-2011-4681)

  - An error exists in the implementation of the JavaScript     'in' operator that can allow sites to verify the     existence of variables of sites in other domains.
    (CVE-2011-4682)

  - An unspecified, moderately severe issue exists. Details     are to be disclosed by the vendor at a later date.
    (CVE-2011-4683)

  - The browser does not properly handle certain corner     cases related to certificate revocation. (CVE-2011-4684)

  - Unspecified content can cause the 'Dragonfly' component     of the browser to crash. (CVE-2011-4685)

  - An unspecified error exists related to the 'Web     Workers' implementation that can allow application     crashes. (CVE-2011-4686)

  - An unspecified error exists that can allow remote     content to cause denial of service conditions via     resource consumption. (CVE-2011-4687)

  - An information disclosure vulnerability, known as BEAST,     exists in the SSL 3.0 and TLS 1.0 protocols due to a     flaw in the way the initialization vector (IV) is     selected when operating in cipher-block chaining (CBC)     modes. A man-in-the-middle attacker can exploit this     to obtain plaintext HTTP header data, by using a     blockwise chosen-boundary attack (BCBA) on an HTTPS     session, in conjunction with JavaScript code that uses     the HTML5 WebSocket API, the Java URLConnection API,     or the Silverlight WebClient API. (CVE-2011-3389)

ID	Name	Product	Family	Severity
75986	openSUSE Security Update : opera (openSUSE-SU-2011:1314-1)	Nessus	SuSE Local Security Checks	critical
75699	openSUSE Security Update : opera (openSUSE-SU-2011:1314-1)	Nessus	SuSE Local Security Checks	critical
74533	openSUSE Security Update : opera (openSUSE-2011-76)	Nessus	SuSE Local Security Checks	critical
59631	GLSA-201206-03 : Opera: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical
57294	FreeBSD : opera -- multiple vulnerabilities (a4a809d8-25c8-11e1-b531-00215c6a37bb) (BEAST)	Nessus	FreeBSD Local Security Checks	critical
6105	Opera < 11.60 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	high
57039	Opera < 11.60 Multiple Vulnerabilities (BEAST)	Nessus	Windows	high

Detections

Analytics

CVE-2011-4681

high

Tenable Plugins

critical

critical

critical

critical

critical

high

high