Some vulnerabilities have been reported in MHonArc, which can be exploited by malicious people to conduct cross-site scripting attacks and cause a DoS (Denial of Service).
1) Input passed via specially crafted HTML tags is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session when the converted mail is viewed.
2) An error exists within the processing of nested HTML tags, which can be exploited to cause a Denial of Service via a specially crafted HTML message.
The vulnerabilities are reported in versions prior to 2.6.17.
Solution: Update to version 2.6.17 or later.
Provided and/or discovered by: 1) Reported by non-customers in a Debian bug report.
2) Reported by the vendor.
Original Advisory: http://www.mhonarc.org/MHonArc/CHANGES
Do you have additional information related to this advisory?
Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this
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Subject: MHonArc HTML Mail Two Vulnerabilities
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