OpenSUSE Linux update for bind

1) Denial of service

EUVDB-ID: #VU1132

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-2016-8864

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote unauthenticated user to cause DoS conditions on the target system.
The weakness is due to imptoper input validation. By returning a recursive response containing a specially crafted DNAME answer, a remote attacker can trigger a flaw in 'db.c' or 'resolver.c' and cause the target resolver to crash.
Successful exploitation of the vulnerability results in denial of service on the vulnerable system.

Mitigation

Update the affected packages.

Vulnerable software versions

ISC BIND: 9.6-esv-r9 - 9.11.0b1

Oracle Solaris: 10 - 11.3

Oracle VM Server for x86: 3.2 - 3.4

Oracle Linux: 5 - 7

CPE2.3

• cpe:2.3:a:isc:isc_bind:9.11.0-P1:*:*:*:*:*:*:*
• cpe:2.3:a:isc:isc_bind:9.10.4-P4:*:*:*:*:*:*:*
• cpe:2.3:a:isc:isc_bind:9.9.9-P4:*:*:*:*:*:*:*
• cpe:2.3:o:oracle:solaris:11.3:*:*:*:*:*:*:*
• cpe:2.3:o:oracle:solaris:10:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:oracle_vm_server_for_x86:3.3:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:oracle_vm_server_for_x86:3.2:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:oracle_vm_server_for_x86:3.4:*:*:*:*:*:*:*
• cpe:2.3:o:oracle:oracle_linux:7:*:*:*:*:*:*:*
• cpe:2.3:o:oracle:oracle_linux:5:*:*:*:*:*:*:*
• cpe:2.3:o:oracle:oracle_linux:6:*:*:*:*:*:*:*

External links

http://lists.opensuse.org/opensuse-security-announce/2016-11/msg00016.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.