FreeBSD VuXML: Documenting security issues in FreeBSD and the FreeBSD Ports Collection

CVE-2011-0520

This CVE name corresponds to:

Entered	Topic
2011-01-31	maradns -- denial of service when resolving a long DNS hostname

The following information is adapted from the Common Vulnerabilities and Exposures (CVE) project. CVE and the CVE logo are trademarks of The MITRE Corporation. CVE content is Copyright 2005, The MITRE Corporation.

CVE-2011-0520 at cve.mitre.org

Details

Type	Candidate
Name	CVE-2011-0520
Phase	Assigned(20110120)

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.

References

Source	Reference
MLIST	[oss-security] 20110123 CVE request: MaraDNS DoS via long queries
MLIST	[oss-security] 20110124 Re: CVE request: MaraDNS DoS via long queries
CONFIRM	http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=610834
DEBIAN	DSA-2196
BID	45966
OSVDB	70630
SECUNIA	43027
SECUNIA	43107
VUPEN	ADV-2011-0699
XF	maradns-compressadddlabelpoints-bo(64885)