Denial of service in BIND

1) Denial of service

EUVDB-ID: #VU1043

Risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-2848

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote unauthenticated user to perform DoS attack on the targete system.
The weakness is due to insuffcient handling of  options data in an OPT resource record. By sending a specially crafted DNS packet, attackers can trigger the named service to crash.
Successful exploitation of the vulnerability leads to denial of service on the vulnarable system.

Mitigation

Update to version 9.9.9-P3, 9.10.4-P3 or 9.11.0.

Vulnerable software versions

ISC BIND: 8.2.3 t1a - 9.9.1

Oracle VM Server for x86: 3.2 - 3.4

Oracle Linux: 5 - 6

External links

http://kb.isc.org/article/AA-01433/74/CVE-2016-2848
http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html

Q & A

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?

No. We are not aware of malware exploiting this vulnerability.