Vulnerability identifier: #VU7257
Vulnerability risk: Low
CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
ISC BIND
Server applications /
DNS servers
Vendor: ISC
Description
The vulnerability allows a remote attacker to bypass security restrictions on the target system.
The weakness exists due to an error in TSIG authentication of AXFR and NOTIFY requests. A remote attacker who is able to send and receive messages to an authoritative DNS server and who has knowledge of a valid TSIG key name can send specially crafted request packet, bypass authentication and perform unauthorized zone transfers.
Mitigation
The vulnerability is addressed in the following versions:
9.9.10-P2, 9.10.5-P2, 9.11.1-P2, 9.9.10-S3, 9.10.5-S3.
Vulnerable software versions
ISC BIND: 9.4.0 - 9.11.1-P1
External links
http://kb.isc.org/article/AA-01504/74/CVE-2017-3142%3A-An-error-in-TSIG-authentication-can-permit-u...
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.