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CVE-2018-5743— Limiting simultaneous TCP clients was ineffective

EPSS 5.69% · P90
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I. Basic Information for CVE-2018-5743

Vulnerability Information
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Vulnerability Title
Limiting simultaneous TCP clients was ineffective
Source: NVD (National Vulnerability Database)
Vulnerability Description
By design, BIND is intended to limit the number of TCP clients that can be connected at any given time. The number of allowed connections is a tunable parameter which, if unset, defaults to a conservative value for most servers. Unfortunately, the code which was intended to limit the number of simultaneous connections contained an error which could be exploited to grow the number of simultaneous connections beyond this limit. Versions affected: BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.6, 9.12.0 -> 9.12.4, 9.14.0. BIND 9 Supported Preview Edition versions 9.9.3-S1 -> 9.11.5-S3, and 9.11.5-S5. Versions 9.13.0 -> 9.13.7 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2018-5743.
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 安全漏洞
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中存在安全漏洞，该漏洞源于程序没有充分地限制TCP客户端同时连接的个数。攻击者可利用该漏洞耗尽文件描述符，影响网络连接和文件管理。以下版本受到影响：BIND 9.9.0版本至9.10.8-P1版本，9.11.0版本至9.11.6版本，9.12.0版本至9.12.4版本，9.14.0版本，9.13.0版本至9.13.7版本（9.13 development branch），BIND 9 Supported Preview E
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

VendorProductAffected VersionsCPESubscribe
ISCBIND 9 BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.6, 9.12.0 -> 9.12.4, 9.14.0. BIND 9 Supported Preview Edition versions 9.9.3-S1 -> 9.11.5-S3, and 9.11.5-S5. Versions 9.13.0 -> 9.13.7 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 h -

II. Public POCs for CVE-2018-5743

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III. Intelligence Information for CVE-2018-5743

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Same Patch Batch · ISC · 2019-10-09 · 9 CVEs total

CVE-2018-5732A specially constructed response from a malicious server can cause a buffer overflow in dh
CVE-2018-5744A specially crafted packet can cause named to leak memory
CVE-2018-5745An assertion failure can occur if a trust anchor rolls over to an unsupported key algorith
CVE-2019-6465Zone transfer controls for writable DLZ zones were not effective
CVE-2019-6467An error in the nxdomain redirect feature can cause BIND to exit with an INSIST assertion
CVE-2019-6468BIND Supported Preview Edition can exit with an assertion failure if nxdomain-redirect is
CVE-2019-6469BIND Supported Preview Edition can exit with an assertion failure if ECS is in use
CVE-2019-6471A race condition when discarding malformed packets can cause BIND to exit with an assertio

IV. Related Vulnerabilities

Same product: BIND 9
Same vendor: ISC

V. Comments for CVE-2018-5743

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