PT-2018-17117 · Isc+1 · Bind+1

Published 2018-02-28 · Updated 2019-10-09 · CVE-2018-5734

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions: BIND versions 9.10.5-S1 through 9.10.5-S4 BIND versions 9.10.6-S1 through 9.10.6-S2

Description: The issue arises when BIND handles a specific type of malformed packet, incorrectly selecting a SERVFAIL rcode instead of a FORMERR rcode. If the receiving view has the SERVFAIL cache feature enabled, this can trigger an assertion failure in badcache.c when the request lacks expected information.

Recommendations: For BIND versions 9.10.5-S1 through 9.10.5-S4, consider disabling the SERVFAIL cache feature as a temporary workaround until a patch is available. For BIND versions 9.10.6-S1 through 9.10.6-S2, consider disabling the SERVFAIL cache feature as a temporary workaround until a patch is available.

Fix

Assertion Failure

Weakness Enumeration

CWE-617

Related Identifiers

CVE-2018-5734

Affected Products

Bind

Bind Server

References · 6

• https://osv.dev/vulnerability/CVE-2018-5734 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-5734 · Security Note
• https://kb.isc.org/docs/aa-01562 · Vendor Advisory
• http://securityfocus.com/bid/103189 · Note
• http://securitytracker.com/id/1040438 · Note
• https://security.netapp.com/advisory/ntap-20180926-0005 · Note