CVE-2012-4142 Cross-site scripting in n/a
Remote attackers can execute cross-site scripting attacks in Opera browsers by exploiting character parsing flaws in HTML documents.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2012-4142?
CVE-2012-4142 is a medium-severity cross-site scripting vulnerability in Opera Opera Browser, published on 6 Aug 2012. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Opera before 12.01 on Windows and UNIX, and before 11.66 and 12.x before 12.01 on Mac OS X, ignores some characters in HTML documents in unspecified circumstances, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via a crafted document.
Weakness: CWE-79
Which versions are affected by CVE-2012-4142?
It affects 1 product.
Products include Opera Opera Browser.
How do I fix CVE-2012-4142?
No fix has been published for CVE-2012-4142 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2012-4142 being exploited?
There is no known exploitation of CVE-2012-4142 in the wild and no public exploit code.
Other vulnerabilities in Opera Opera Browser
- CVE-2013-3211 Unspecified vulnerability in Opera before 12.15 has unknown impact and attack vectors, related to a "moderately severe issue."
- CVE-2012-4145 Other in n/a
- CVE-2012-3559 Other in n/a
- CVE-2012-3561 Memory corruption in n/a
- CVE-2011-4683 Unspecified vulnerability in Opera before 11.60 has unknown impact and attack vectors, related to a "moderately severe issue."
Sources
Also known as GHSA-55h8-9r93-gr3v.