VULNERABILITY INTELLIGENCE
CVE-2011-0520
CVSS score7.5 HIGH
EPSS probability5.17%
CISA KEVNot currently listed
Published2011-01-28
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:N/C:P/I:P/A:P
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.
Weakness classification
- CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer