This security advisory describes one high risk vulnerability.
CWE-617 - Reachable Assertion
The vulnerability allows a remote attacker to perform denial of service attack.
The vulnerability exists due to assertion failure in dns_db_findrdataset() function within db.c when named is configured as a master server. A remote unauthenticated attacker can send an ANY record in the prerequisite section of a crafted dynamic update message and trigger assertion failure and daemon exit.
Successful exploitation of this vulnerability may allow an attacker to perform denial of service (DoS) attack.
Note: this vulnerability is being actively exploited.
Update to version 9.4.3-P3, 9.5.1-P3 or 9.6.1-P1.Vulnerable software versions
ISC BIND: 9.4, 9.4.1, 9.4.2, 9.4.3, 9.4.3-P1, 9.4.3-P2, 9.5, 9.5.1, 9.5.1-P1, 9.5.1-P2, 9.6, 9.6.1CPE
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker 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?
Yes. This vulnerability is being exploited in the wild.