Wouter Coekaerts has reported a vulnerability in a2x, which can be exploited by malicious people to bypass certain security restrictions.
The vulnerability is caused due to a2x not correctly filtering id3 tags before sending them to XChat. This can be exploited to e.g. send arbitrary commands to a server by tricking a user into playing and announcing a specially crafted MP3 file.
The vulnerability is reported in version 0.0.1. Other versions may also be affected.
Solution: Do not play and announce untrusted audio files. Use another product.
Provided and/or discovered by: Wouter Coekaerts
Original Advisory: http://wouter.coekaerts.be/site/security/nowplaying
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Subject: a2x for XChat id3 Tag Input Validation Error
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