CVE-2010-1330 Cross-site Scripting in in JRuby

Medium 4.3 Published Updated

Remote attackers can execute cross-site scripting attacks in JRuby applications by exploiting a UTF-8 handling flaw in the regex engine when Unicode mode is enabled.

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
Available

What is CVE-2010-1330?

CVE-2010-1330 is a medium-severity cross-site scripting vulnerability in n/a, published on 23 Nov 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

The regular expression engine in JRuby before 1.4.1, when $KCODE is set to 'u', does not properly handle characters immediately after a UTF-8 character, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a crafted string.

Weakness: CWE-79

Which versions are affected by CVE-2010-1330?

2 open source packages ship an affected version, including org.jruby:jruby-core. It affects 1 product.

PackageAffectedFixed in
org.jruby:jruby-core MavenAll versions1.4.1
org.jruby:jruby-core MavenAll versions1.4.1

Products include Jruby Jruby.

How do I fix CVE-2010-1330?

Upgrade org.jruby:jruby-core to 1.4.1 or later.

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-2010-1330 being exploited?

There is no known exploitation of CVE-2010-1330 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2010-1330, GHSA-wmq2-jc9m-xp4m.

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