CVE-2011-0520

HighCVSS 7.5/10Last modified Jun 16, 2026

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.

Metrics

CVSS 2.0 7.5/10AV:N/AC:L/Au:N/C:P/I:P/A:P

Weakness enumeration

CWE-119

Affected software

No affected versions have been published.

Timeline

Published
Jan 28, 2011
Last modified
Jun 16, 2026
NVD status
Modified

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CVE-2011-0520: High severity, CVSS 7.5 | Vulnix