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.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://www.vupen.com/english/advisories/2011/0699 | vdb entry |
| http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=610834 | |
| http://www.openwall.com/lists/oss-security/2011/01/24/1 | mailing list |
| http://www.openwall.com/lists/oss-security/2011/01/24/6 | mailing list |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/64885 | vdb entry |
| http://www.debian.org/security/2011/dsa-2196 | vendor advisory |
| http://secunia.com/advisories/43107 | third party advisory |
| http://secunia.com/advisories/43027 | third party advisory vendor advisory |
| http://osvdb.org/70630 | vdb entry |
| http://www.securityfocus.com/bid/45966 | vdb entry |