This security advisory describes one high risk vulnerability.
CWE-388 - Error Handling
The vulnerability allows a remote attacker to cause DoS conditions on the target system.
The weakness exists due to an error in the RFC 5011 implementation in rdata.c when parsing RDATA within a DNS query. By using a query with a malformed RDATA section that is not properly handled during construction of a log message, a remote attacker can cause an assertion failure and named daemon exit.
Successful exploitation of the vulnerability results in denial of service on the vulnerable system.
Note: the vulnerability was being actively exploited.
Install update from vendor's website.
ISC BIND: 9.8.0, 9.8.0 P4, 9.8.5, 9.9.0, 9.9.1, 9.9.2, 9.9.2 P1, 9.9.3CPE
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.