Mandriva Linux Security Advisory – The Avahi daemon in 0.6.20 and previous allows attackers to cause a denial of service via empty TXT data over D-Bus, which triggers an assert error.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/59390/MDKSA-2007-185.txt
Source: https://packetstormsecurity.com/files/59390/Mandriva-Linux-Security-Advisory-2007.185.html