ISC host Remote Buffer Overflow Vulnerability
BID:1887
Info
ISC host Remote Buffer Overflow Vulnerability
| Bugtraq ID: | 1887 |
| Class: | Input Validation Error |
| CVE: |
CVE-2000-1029 |
| Remote: | Yes |
| Local: | Yes |
| Published: | Oct 27 2000 12:00AM |
| Updated: | Jul 11 2009 03:56AM |
| Credit: | Posted to bugtraq by antirez <[email protected]> on Fri, 27 Oct 2000. |
| Vulnerable: |
ISC BIND 8.1 |
| Not Vulnerable: | |
Discussion
ISC host Remote Buffer Overflow Vulnerability
An exploitable buffer overflow vulnerability exists in certain non-current versions of the ISC host command.
host can be used to issue an AXFR command to effect a zone transfer for a given domain name. In affected versions of host, if the AXFR query yields a response from the server which exceeds 512 bytes in length (possible, since TCP DNS messages can be up to 65535 bytes in length), the response can overflow the relevant buffer onto the stack, allowing the return address of the function to be modified. This may allow an operator of a malicious nameserver to gain control of a system on which host is being run when a query is made.
An exploitable buffer overflow vulnerability exists in certain non-current versions of the ISC host command.
host can be used to issue an AXFR command to effect a zone transfer for a given domain name. In affected versions of host, if the AXFR query yields a response from the server which exceeds 512 bytes in length (possible, since TCP DNS messages can be up to 65535 bytes in length), the response can overflow the relevant buffer onto the stack, allowing the return address of the function to be modified. This may allow an operator of a malicious nameserver to gain control of a system on which host is being run when a query is made.