CVE-2008-5681: Undefined Security Weakness

Opera before 9.63 does not block unspecified "scripted URLs" during the feed preview, which allows remote attackers to read existing subscriptions and force subscriptions to arbitrary feed URLs...

CVE-2008-5679: Undefined Security Weakness

The HTML parsing engine in Opera before 9.63 allows remote attackers to execute arbitrary code via crafted web pages that trigger an invalid pointer calculation and heap corruption...

CVE-2008-5682: Improper Neutralization of Input During Web Page Generation

Cross-site scripting XSS vulnerability in Opera before 9.63 allows remote attackers to inject arbitrary web script or HTML via built-in XSLT templates...

Opera memory corruption

Heap corruption on HTML parsing...

n.runs-SA-2008.010 - Opera HTML parsing Code Execution

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 n.runs AG http://www.nruns.com/ securityatnruns.com n.runs-SA-2008.010 16-Dec-2008 Vendor: Opera Software ASA, http://www.opera.com Affected Products: Opera Browser all platforms Vulnerability: HTML parsing flaw lead to remote code execution Risk: HIG...

Certain characters can be used to allow cross-site scripting – Opera Security Advisories

Certain characters can be used to allow cross-site scripting – Opera Security Advisories OPCOM Team | December 17, 2008 Severity Highly Severe Problem Description When accepting HTML content from untrusted users, Web sites sometimes employ some kind of filtering to ensure that the content cannot...

Registering Opera as a protocol handler can allow it to be used to execute arbitrary code

When an application attempts to access a URL that uses a protocol that it does not understand, it may choose to pass the URL to a registered handler for that protocol. If that registered handler is Opera, it will be started, passing the URL to open. Some external applications do not ensure that t...

Opera Web Browser DoS attacks on MIME via malformed MIME emails (Windows)

The host is installed with Opera Web Browser and is prone to denial of service vulnerability. OpenVAS Vulnerability Test $Id: gboperamimedosvulnwin.nasl 6532 2017-07-05 07:42:05Z cfischer $ Opera Web Browser DoS attacks on MIME via malformed MIME emails Windows Authors: Chandan S Copyright:...

Feed preview can reveal contents of unrelated news feeds

When Opera is previewing a news feed, some scripts are not correctly blocked. These scripts are able to subscribe the user to any feed URL that the attacker chooses, and can also view the contents of any feeds that the user is subscribed to. These may contain sensitive information...

Malformed bitmaps can reveal old data from random places in memory

Specially malformed bitmap images can cause Opera to render the image using a palette made up from uninitialized memory. Using canvas, the pattern can be read and analyzed by JavaScript, so an attacker can get random samples of the user's memory, which may contain data...

History Search can be used to execute arbitrary code

When certain parameters are passed to Opera's History Search, they can cause content not to be correctly sanitized. This can allow scripts to be injected into the History Search results page. Such scripts can then run with elevated privileges and interact with Opera's configuration, allowing them...

Fast Forward can allow cross-site scripting

If a link that uses a JavaScript URL triggers Opera's Fast Forward feature, when the user activates Fast Forward, the script should run on the current page. When a page is held in a frame, the script is incorrectly executed on the outermost page, not the page where the URL was located. This can b...

Startup crash can allow execution of arbitrary code

When Opera is registered as a handler for a given protocol, it can be started by external applications. In some cases, being started in this way can cause Opera to crash. To inject code, additional techniques will have to be employed...

Resized canvas patterns can cause Opera to execute arbitrary code

HTML CANVAS elements can use scaled images as patterns. With suitable scaling manipulation of the image, a script can cause Opera to crash. This crash can sometimes cause memory corruption. To inject code, additional techniques will have to be employed...

A JPEG image with a malformed header can crash Opera

A specially crafted DHT marker in the JPEG file header can causea heap overflow. The malformed image alone will only cause a crash. To exploitthe flaw, the computer's memory must first be filled up withcode of the attacker's choice. This is not trivial to do reliably,so attempted attacks will oft...

Image properties can be used to execute scripts

Image properties can contain custom comments. When displaying the image properties, Opera can be tricked into treating the comments as script. This can cause the script to be run in the wrong security context...

Opera security upgrade for Linux, Solaris and FreeBSD

A security issue in the Adobe Flash Player running in Opera on Linux, Solaris or FreeBSD has been found. Details about the vulnerability will be disclosed at a later date...

Malformed JPEG headers can be used to execute arbitrary code

A specially crafted JPEG header can cause Opera to crash, allowing execution of arbitrary code...

Newsfeed prompt can cause Opera to execute arbitrary code

When Opera encounters a newsfeed source on a Web page, it prompts to add the source as a newsfeed. A script can manipulate the feed source in a way that can cause Opera to crash. The crash is caused by an erroneous memory access. To inject code, additional techniques will have to be employed...

Feed links can link to local files

As a security precaution, Opera does not allow Web pages to link to files on the user's local disk. However, a flaw exists that allows Web pages to link to feed source files on the user's computer. Suitable detection of JavaScript events and appropriate manipulation can unreliably allow a script ...