CVE-2018-5740— A flaw in the "deny-answer-aliases" feature can cause an assertion failure in named

EPSS 64.53% · P98 Updated Feb 21, 2026

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I. Basic Information for CVE-2018-5740

Vulnerability Information

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Vulnerability Title

A flaw in the "deny-answer-aliases" feature can cause an assertion failure in named

Source: NVD (National Vulnerability Database)

Vulnerability Description

"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.

Source: NVD (National Vulnerability Database)

CVSS Information

N/A

Source: NVD (National Vulnerability Database)

Vulnerability Type

N/A

Source: NVD (National Vulnerability Database)

Vulnerability Title

ISC BIND 输入验证错误漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

ISC BIND是美国ISC公司的一套实现了DNS协议的开源软件。 ISC BIND中存在输入验证错误漏洞。该漏洞源于网络系统或产品未对输入的数据进行正确的验证。以下产品及版本受到影响：ISC BIND 9.7.0版本至9.8.8版本，9.9.0版本至9.9.13版本，9.10.0版本至9.10.8版本，9.11.0版本至9.11.4版本，9.12.0版本至9.12.2版本，9.13.0版本至9.13.2版本。

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
ISC	BIND 9	BIND 9 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	-

II. Public POCs for CVE-2018-5740

#	POC Description	Source Link	Shenlong Link
1	None	https://github.com/sischkg/cve-2018-5740	POC Details

AI-Generated POCPremium

No public POC found.

III. Intelligence Information for CVE-2018-5740

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https://security.netapp.com/advisory/ntap-20180926-0003/x_refsource_CONFIRM
https://kb.isc.org/docs/aa-01639x_refsource_CONFIRM
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03927en_usx_refsource_CONFIRM
http://www.securityfocus.com/bid/105055vdb-entryx_refsource_BID
http://www.securitytracker.com/id/1041436vdb-entryx_refsource_SECTRACK
https://usn.ubuntu.com/3769-1/vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3769-2/vendor-advisoryx_refsource_UBUNTU
https://access.redhat.com/errata/RHSA-2018:2571vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2018:2570vendor-advisoryx_refsource_REDHAT
https://security.gentoo.org/glsa/201903-13vendor-advisoryx_refsource_GENTOO
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00027.htmlvendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00026.htmlvendor-advisoryx_refsource_SUSE
https://lists.debian.org/debian-lts-announce/2021/11/msg00001.htmlmailing-listx_refsource_MLIST
[SECURITY] [DLA 1485-1] bind9 security updatemailing-listx_refsource_MLIST
https://nvd.nist.gov/vuln/detail/CVE-2018-5740

Same Patch Batch · ISC · 2019-01-16 · 18 CVEs total

CVE-2017-3143		An error in TSIG authentication can permit unauthorized dynamic updates
CVE-2018-5741		Update policies krb5-subdomain and ms-subdomain do not enforce controls promised in their
CVE-2018-5739		Failure to release memory may exhaust system resources
CVE-2018-5738		Some versions of BIND can improperly permit recursive query service to unauthorized client
CVE-2018-5737		BIND 9.12's serve-stale implementation can cause an assertion failure in rbtdb.c or other
CVE-2018-5734		A malformed request can trigger an assertion failure in badcache.c
CVE-2018-5733		A malicious client can overflow a reference counter in ISC dhcpd
CVE-2017-3145		Improper fetch cleanup sequencing in the resolver can cause named to crash
CVE-2017-3144		Failure to properly clean up closed OMAPI connections can exhaust available sockets
CVE-2016-9778		An error handling certain queries using the nxdomain-redirect feature could cause a REQUIR
CVE-2017-3142		An error in TSIG authentication can permit unauthorized zone transfers
CVE-2017-3141		Windows service and uninstall paths are not quoted when BIND is installed
CVE-2017-3140		An error processing RPZ rules can cause named to loop endlessly after handling a query
CVE-2017-3138		named exits with a REQUIRE assertion failure if it receives a null command string on its c
CVE-2017-3137		A response packet can cause a resolver to terminate when processing an answer containing a
CVE-2017-3136		An error handling synthesized records could cause an assertion failure when using DNS64 wi
CVE-2017-3135		Combination of DNS64 and RPZ Can Lead to Crash

IV. Related Vulnerabilities

Same product: BIND 9

Same vendor: ISC

V. Comments for CVE-2018-5740

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CVE-2018-5740— A flaw in the "deny-answer-aliases" feature can cause an assertion failure in named

I. Basic Information for CVE-2018-5740

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2018-5740

III. Intelligence Information for CVE-2018-5740

Same Patch Batch · ISC · 2019-01-16 · 18 CVEs total

IV. Related Vulnerabilities

V. Comments for CVE-2018-5740

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