CVE-2011-0520: Buffer Overflow
The compressadddlabelpoints 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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2011-0520?
CVE-2011-0520 is classified as a denial of service vulnerability that may also allow remote code execution.
How do I fix CVE-2011-0520?
To fix CVE-2011-0520, upgrade MaraDNS to the latest version that contains patches for this vulnerability.
What versions of MaraDNS are affected by CVE-2011-0520?
MaraDNS versions 1.4.03 and 1.4.05 are affected by CVE-2011-0520.
Can CVE-2011-0520 lead to remote code execution?
Yes, CVE-2011-0520 can potentially allow remote attackers to execute arbitrary code due to a segmentation fault.
What exploitability concerns are associated with CVE-2011-0520?
CVE-2011-0520 poses concerns for service availability and potential unauthorized access through code execution.