| packages: |
| - module: std |
| package: net |
| symbols: |
| - Resolver.LookupAddr |
| - Resolver.LookupCNAME |
| - Resolver.LookupMX |
| - Resolver.LookupNS |
| - Resolver.LookupSRV |
| versions: |
| - fixed: 1.15.13 |
| - introduced: 1.16.0 |
| fixed: 1.16.5 |
| description: | |
| The LookupCNAME, LookupSRV, LookupMX, LookupNS, and LookupAddr |
| functions and their respective methods on the Resolver type may |
| return arbitrary values retrieved from DNS which do not follow |
| the established RFC 1035 rules for domain names. If these names |
| are used without further sanitization, for instance unsafely |
| included in HTML, they may allow for injection of unexpected |
| content. Note that LookupTXT may still return arbitrary values |
| that could require sanitization before further use. |
| published: 2022-02-17T17:33:35Z |
| cves: |
| - CVE-2021-33195 |
| credit: Philipp Jeitner and Haya Shulman from Fraunhofer SIT |
| links: |
| pr: https://go.dev/cl/320949 |
| commit: https://go.googlesource.com/go/+/c89f1224a544cde464fcb86e78ebb0cc97eedba2 |
| context: |
| - https://groups.google.com/g/golang-announce/c/RgCMkAEQjSI |
| - https://go.dev/issue/46241 |