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CVE-2018-5740

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Date: August 7, 2018

"deny-answer-aliases" is a little-used feature intended to help recursive server operators protect end users against DNS rebinding attacks, a potential method of circumventing the security model used by client browsers. However, a defect in this feature makes it easy, when the feature is in use, to experience an assertion failure in name.c. Affects BIND 9.7.0->9.8.8, 9.9.0->9.9.13, 9.10.0->9.10.8, 9.11.0->9.11.4, 9.12.0->9.12.2, 9.13.0->9.13.2.

Language: C

Severity Score

Related Resources (19)

http://www.securityfocus.com/bid/105055
https://usn.ubuntu.com/3769-1/
https://usn.ubuntu.com/3769-2/
https://security-tracker.debian.org/tracker/CVE-2018-5740
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00026.html
https://access.redhat.com/security/cve/CVE-2018-5740
https://lists.debian.org/debian-lts-announce/2018/08/msg00033.html
https://security.gentoo.org/glsa/201903-13
https://lists.debian.org/debian-lts-announce/2021/11/msg00001.html
https://access.redhat.com/errata/RHSA-2018:2570
https://kb.isc.org/docs/aa-01639
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03927en_us
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00027.html
https://security.netapp.com/advisory/ntap-20180926-0003/
https://people.canonical.com/~ubuntu-security/cve/CVE-2018-5740
http://www.securitytracker.com/id/1041436
https://nvd.nist.gov/vuln/detail/CVE-2018-5740
https://access.redhat.com/errata/RHSA-2018:2571
https://www.mend.io/vulnerability-database/CVE-2018-5740

Severity Score

Weakness Type (CWE)

Reachable Assertion

CWE-617

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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