Heap-based Buffer Overflow in compress_add_dlabel_points function in MaraDNS

CVE-2011-0520 · HIGH Severity

AV:N/AC:L/AU:N/C:P/I:P/A:P

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.

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