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CVE-2021-23386— Remote Memory Exposure

Quick assessment

Affected
n/a dns-packet
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

dns-packet是一个应用软件。一个抽象的编码为编码/解码DNS数据包的依从模型。 dns-packet 5.2.2之前版本存在安全漏洞，该漏洞源于使用allocUnsafe创建缓冲区，并且在形成网络数据包之前并不总是填充它们。

CVSS 7.7 · High EPSS 1.43% · P72
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I. Basic Information for CVE-2021-23386

Vulnerability Information
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Vulnerability Title
Remote Memory Exposure
Source: CVE Program / CVE List V5
Vulnerability Description
This affects the package dns-packet before 5.2.2. It creates buffers with allocUnsafe and does not always fill them before forming network packets. This can expose internal application memory over unencrypted network when querying crafted invalid domain names.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
dns-packet 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
dns-packet是一个应用软件。一个抽象的编码为编码/解码DNS数据包的依从模型。 dns-packet 5.2.2之前版本存在安全漏洞，该漏洞源于使用allocUnsafe创建缓冲区，并且在形成网络数据包之前并不总是填充它们。
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
- dns-packet unspecified ~ 5.2.2 -

II. Public POCs for CVE-2021-23386

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7767 chars
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III. Intelligence Information for CVE-2021-23386

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Patches & Fixes for CVE-2021-23386 (1)

Vendor Advisories for CVE-2021-23386 (2)

Other References for CVE-2021-23386 (1)

Same Patch Batch · n/a · 2021-05-20 · 45 CVEs total

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CVE-2021-3536 Red Hat Wildfly 跨站脚本漏洞
CVE-2021-27461 Emerson Rosemount X-STREAM Gas Analyzer 路径遍历漏洞
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CVE-2021-27467 Emerson Rosemount X-STREAM Gas Analyzer 安全漏洞
CVE-2021-27465 Emerson Rosemount X-STREAM Gas Analyzer 跨站脚本漏洞
CVE-2021-27463 Emerson Rosemount X-STREAM Gas Analyzer 安全漏洞
CVE-2021-3426 Python 路径遍历漏洞
CVE-2021-27457 Emerson Rosemount X-STREAM Gas Analyzer 加密问题漏洞
CVE-2021-29659 ownCloud 安全漏洞
CVE-2020-24395 Homee Brain Cube 数据伪造问题漏洞
CVE-2021-28111 Draege X-Dock 信任管理问题漏洞
CVE-2021-28112 Draege X-Dock 安全漏洞
CVE-2021-3438 HP 多款产品缓冲区错误漏洞
CVE-2021-27434 Siemens SIMATIC OPC UA 信息泄露漏洞
CVE-2021-25930 Opennms Group OpenNMS 跨站请求伪造漏洞
CVE-2021-25929 Opennms Group OpenNMS 跨站脚本漏洞
CVE-2020-21053 FusionPBX 跨站脚本漏洞
CVE-2021-25931 Opennms Group OpenNMS 跨站请求伪造漏洞

Showing top 20 of 45 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same vendor: n/a

V. Comments for CVE-2021-23386

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