https://issues.apache.org/SpamAssassin/show_bug.cgi?id=6554
Summary: HTML messages with <p style="color:#FFFFFF;" > fool
html_font_invisible()
Product: Spamassassin
Version: SVN Trunk (Latest Devel Version)
Platform: All
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Libraries
AssignedTo: [email protected]
ReportedBy: [email protected]
Created an attachment (id=4850)
--> (https://issues.apache.org/SpamAssassin/attachment.cgi?id=4850)
Patch
I have a heavy flow of HTML messages that are getting through with BAYES_00
scores because of hidden paragraphs with what look like cut-n-pasted messages
from technical forums, which have non-spammy bayesian scores of course.
After analyzing the messages, they are using something like/similar to the
following:
<p style="color:#FFFFFF; font-size:1px; line-height:1px;">
The HTML module was /not/ looking at style attributes on <p> tags and thus
missing the fact that the foreground font color is getting set to white, the
same as the background color.
The attached two-line patch against trunk version fixes this.
Save this as a file and look at in a browser to see the effect:
<html>
<body>
<p style="color: #FFFFFF;">
You Can't See Me
</p>
</body>
</html>
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