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CVE-2018-5742— An oversight while backporting a feature leads to an assertion failure in buffer.c:420

Quick assessment

Affected
RedHat BIND9
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Bind server是一款DNS（域名系统）协议的完整实现。 Bind server中存在缓冲区溢出漏洞，该漏洞源于程序没有对用户提交的数据执行恰当的边界检查。远程攻击者可利用该漏洞造成拒绝服务或可能执行任意代码。以下产品和版本受到影响：Red Hat Enterprise Linux 7版本。

AI Predicted 5.3 Difficulty: Moderate EPSS 1.57% · P75

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2018-5742

Vulnerability Information
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Vulnerability Title
An oversight while backporting a feature leads to an assertion failure in buffer.c:420
Source: CVE Program / CVE List V5
Vulnerability Description
While backporting a feature for a newer branch of BIND9, RedHat introduced a path leading to an assertion failure in buffer.c:420. Affects RedHat versions bind-9.9.4-65.el7 -> bind-9.9.4-72.el7. No ISC releases are affected. Other packages from other distributions who made the same error may also be affected.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Bind server 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Bind server是一款DNS（域名系统）协议的完整实现。 Bind server中存在缓冲区溢出漏洞，该漏洞源于程序没有对用户提交的数据执行恰当的边界检查。远程攻击者可利用该漏洞造成拒绝服务或可能执行任意代码。以下产品和版本受到影响：Red Hat Enterprise Linux 7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
RedHat BIND9 RedHat BIND9 bind-9.9.4-65.el7 -> bind-9.9.4-72.el7 -

II. Public POCs for CVE-2018-5742

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III. Intelligence Information for CVE-2018-5742

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Vendor Advisories for CVE-2018-5742 (1)

IV. Related Vulnerabilities

Same product: BIND9
Same vendor: RedHat

V. Comments for CVE-2018-5742

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