CVE-2011-0520 Information

Description

The compress_add_dlabel_points function in dns/Compress.c in MaraDNS 1.4.03 1.4.05 and probably other versions allows remote attackers to cause a denial of service (segmentation fault) and possibly execute arbitrary code via a long DNS hostname with a large number of labels which triggers a heap-based buffer overflow.

Reference

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=610834 http://osvdb.org/70630 http://secunia.com/advisories/43027 http://secunia.com/advisories/43107 http://www.debian.org/security/2011/dsa-2196 http://www.openwall.com/lists/oss-security/2011/01/24/1 http://www.openwall.com/lists/oss-security/2011/01/24/6 http://www.securityfocus.com/bid/45966 http://www.vupen.com/english/advisories/2011/0699 https://exchange.xforce.ibmcloud.com/vulnerabilities/64885