DNS Lookup Vulnerability in Go Programming Language by Google
CVE-2021-33195

7.3HIGH

Key Information:

Vendor

Golang

Status
Go
Vendor
CVE Published:
2 August 2021

What is CVE-2021-33195?

In versions of Go earlier than 1.15.13 and 1.16.x prior to 1.16.5, functions utilized for DNS lookups fail to properly validate responses from DNS servers. This issue can lead to unsafe injection, exposing applications to various security threats including Cross-Site Scripting (XSS) vulnerabilities. Such non-compliance with RFC1035 format standards allows malicious actors to manipulate DNS responses, potentially impacting the integrity and security of the application relying on this functionality.

References

https://groups.google.com/g/golang-announce
x_refsource_MISC
https://groups.google.com/g/golang-announce/c/RgCMkAEQjSI
x_refsource_MISC
https://security.netapp.com/advisory/ntap-20210902-0005/
x_refsource_CONFIRM

CVSS V3.1

Score:
7.3
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.