Home/CVE/Go before 1.15.13 and 1.16.x before 1.16.5 has functions for DNS lookups that do not validate replies from DNS servers,
CVE

CVE-2021-33195

Go before 1.15.13 and 1.16.x before 1.16.5 has functions for DNS lookups that do not validate replies from DNS servers,

Go before 1.15.13 and 1.16.x before 1.16.5 has functions for DNS lookups that do not validate replies from DNS servers, and thus a return value may contain an unsafe injection (e.g., XSS) that does not conform to the RFC1035 format.

HIGH · CVSS 7.3 EPSS 0.00031
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
▤

Affected Products & Versions

3
golang go< 1.15.13
golang go>= 1.16.0 and < 1.16.5
netapp cloud insights telegraf agentall versions
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Go stdlib fixed in 1.15.13, 1.16.5
⚠

Public Exploits & PoCs

1
pocgroups.google.com · RgCMkAEQjSIgroups.google.com
▣

Scoring & Timeline

7.3
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD02 Aug 2021 · 07:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
⚑

Vendor Advisories

30
msrcCVE-2021-33195
suse-csafopenSUSE-SU-2024:10808-1
suse-csafopenSUSE-SU-2024:10809-1
rhsaRHSA-2022:8008Low
rhsaRHSA-2022:0947Moderate
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://groups.google.com/g/golang-announceThird Party Advisory
https://security.gentoo.org/glsa/202208-02Third Party Advisory
https://security.netapp.com/advisory/ntap-20210902-0005/Third Party Advisory
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