Secunia

Some vulnerabilities have been discovered in the Sage extension for Firefox, which can be exploited by malicious people to conduct script insertion attacks.

1) The vulnerability is caused due to an input validation error in the processing of "img" tags in feeds. This can e.g. be exploited to insert and execute arbitrary HTML and script code in a local context by tricking a user into adding a malicious feed and then viewing the contents of it.

2) The vulnerability is caused due to an input validation error in the processing of "link" tags in feeds. This can e.g. be exploited to insert and execute arbitrary HTML and script code in a local context by tricking a user into adding a malicious feed and then viewing the contents of it.

The vulnerabilities are confirmed in version 1.3.8. Other versions may also be affected.

Solution
Update to version 1.3.9.

Provided and/or discovered by
1) David Kierznowski
2) higmmer.neet

Changelog
Further details available in Customer Area

Original Advisory
1) http://michaeldaw.org/md-hacks/rss-injection-in-sage-part-2/
2) http://mozdev.org/bugs/show_bug.cgi?id=15772

Deep Links
Links available in Customer Area