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CVE-2021-23386

nvd nist
Published: May 20, 2021Modified: Jun 17, 2026

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6.5
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Exploitability: 2.8 / Impact: 3.6
Source: NVD

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.

Affected (2)

Dns Packet Project
1 product
Dns Packet
Configuration A
2 vulnerable
Vulnerable SoftwareAffected Versions
Dns Packet
Before 1.3.4
Dns Packet
From 2.0.0 to 5.2.2

Related CWEs

CWE-909
Missing Initialization of Resource
The product does not initialize a critical resource.

References (8)

Source: report@snyk.io
PatchThird Party Advisory
Source: report@snyk.io
Permissions RequiredThird Party Advisory
Source: report@snyk.io
PatchThird Party Advisory
Source: report@snyk.io
PatchThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
PatchThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Permissions RequiredThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
PatchThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
PatchThird Party Advisory

Timeline

No history available yet.