Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Maradns | Maradns | 1.4.03 |
Related Weaknesses (CWE)
References
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=610834
- http://osvdb.org/70630
- http://secunia.com/advisories/43027Vendor Advisory
- http://secunia.com/advisories/43107
- http://www.debian.org/security/2011/dsa-2196
- http://www.openwall.com/lists/oss-security/2011/01/24/1
- http://www.openwall.com/lists/oss-security/2011/01/24/6
- http://www.securityfocus.com/bid/45966
- http://www.vupen.com/english/advisories/2011/0699
- https://exchange.xforce.ibmcloud.com/vulnerabilities/64885
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=610834
- http://osvdb.org/70630
- http://secunia.com/advisories/43027Vendor Advisory
- http://secunia.com/advisories/43107
- http://www.debian.org/security/2011/dsa-2196
FAQ
What is CVE-2011-0520?
CVE-2011-0520 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 ...
How severe is CVE-2011-0520?
CVE-2011-0520 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2011-0520?
Check the references section above for vendor advisories and patch information. Affected products include: Maradns Maradns.