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CVE-2016-7069

Quick assessment

Affected
Open-Xchange dnsdist
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

dnsdist是一款负载均衡器，它能够将流量分流到不同服务器，为用户提供最佳性能。 dnsdist 1.2.0之前版本中EDNS0 OPT记录被处理的方式存在拒绝服务漏洞。远程攻击者可借助特制的后端响应利用该漏洞造成拒绝服务（应用程序崩溃）。

AI Predicted 5.3 Difficulty: Moderate EPSS 4.58% · P91
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I. Basic Information for CVE-2016-7069

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An issue has been found in dnsdist before 1.2.0 in the way EDNS0 OPT records are handled when parsing responses from a backend. When dnsdist is configured to add EDNS Client Subnet to a query, the response may contain an EDNS0 OPT record that has to be removed before forwarding the response to the initial client. On a 32-bit system, the pointer arithmetic used when parsing the received response to remove that record might trigger an undefined behavior leading to a crash.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
dnsdist 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
dnsdist是一款负载均衡器，它能够将流量分流到不同服务器，为用户提供最佳性能。 dnsdist 1.2.0之前版本中EDNS0 OPT记录被处理的方式存在拒绝服务漏洞。远程攻击者可借助特制的后端响应利用该漏洞造成拒绝服务（应用程序崩溃）。
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
Open-Xchange dnsdist 1.2.0 -

II. Public POCs for CVE-2016-7069

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III. Intelligence Information for CVE-2016-7069

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Vendor Advisories for CVE-2016-7069 (2)

Other References for CVE-2016-7069 (1)

Same Patch Batch · Open-Xchange · 2018-09-11 · 4 CVEs total

CVE-2016-7068 PowerDNS Authoritative Server和PowerDNS Recursor 安全漏洞
CVE-2016-7073 PowerDNS Authoritative Server和PowerDNS Recursor 安全漏洞
CVE-2016-7074 PowerDNS Authoritative Server和PowerDNS Recursor 安全漏洞

IV. Related Vulnerabilities

Same product: dnsdist
Same vendor: Open-Xchange
Same weakness: CWE-20

V. Comments for CVE-2016-7069

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