Slackware Linux update for bind

1) Improper input validation

EUVDB-ID: #VU7091

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-2017-3140

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to an error when processing Response Policy Zones (RPZ) rules, when NSDNAME or NSIP policy rules are used. A remote attacker can trigger the affected server to enter an endless loop and repeatedly query a set of authoritative nameservers.

Successful exploitation of the vulnerability may allow an attacker to perform a denial of service attack.

Mitigation

Update the affected package bind.

Vulnerable software versions

Slackware Linux: 13.0 - 14.2

CPE2.3

• cpe:2.3:o:slackware:slackware_linux:13.0:*:*:*:*:*:*:*
• cpe:2.3:o:slackware:slackware_linux:13.1:*:*:*:*:*:*:*
• cpe:2.3:o:slackware:slackware_linux:13.37:*:*:*:*:*:*:*

External links

https://www.slackware.com/security/viewer.php?l=slackware-security&y=2017&m=slackware-security.549369

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.