Ubuntu update for Bind

1) Assertion failure

EUVDB-ID: #VU3848

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2015-8000

CWE-ID: CWE-617 - Reachable Assertion

Exploit availability: No

Description

A remote attacker can trigger denial of service (DoS) conditions.

The vulnerability exists due to a parsing error when processing incoming responses within db.c file. A remote attacker who can cause a server to request a record with a malformed class attribute can use this bug to trigger a REQUIRE assertion, causing named to exit and denying service to clients.

Successful exploitation of this vulnerability may allow an attacker to perform a denial of service (DoS) attack.

Mitigation

Update the affected packages

Ubuntu 15.10:

bind9 1:9.9.5.dfsg-11ubuntu1.1

Ubuntu 15.04:

bind9 1:9.9.5.dfsg-9ubuntu0.4

Ubuntu 14.04 LTS:

bind9 1:9.9.5.dfsg-3ubuntu0.6

Ubuntu 12.04 LTS:

bind9 1:9.8.1.dfsg.P1-4ubuntu0.14

Vulnerable software versions

Ubuntu: 12.04 - 14.04

CPE2.3

• cpe:2.3:o:canonical:ubuntu:12.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:14.04:*:*:*:*:*:*:*

External links

https://www.ubuntu.com/usn/usn-2837-1/

Q & A

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.