GO-2021-0239

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Source

https://pkg.go.dev/vuln/GO-2021-0239

Import Source

https://vuln.go.dev/ID/GO-2021-0239.json

JSON Data

https://api.osv.dev/v1/vulns/GO-2021-0239

Aliases

Published

2022-02-17T17:33:35Z

Modified

2024-05-20T16:03:47Z

Summary

Improper sanitization when resolving values from DNS in net

Details

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.

References

Credits

- Philipp Jeitner
- Haya Shulman from Fraunhofer SIT

Affected packages

Go / stdlib

Package

Name: stdlib; View open source insights on deps.dev
Purl: pkg:golang/stdlib

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.15.13

Introduced

1.16.0-0

Fixed

1.16.5

Ecosystem specific

{
    "imports": [
        {
            "path": "net",
            "symbols": [
                "Resolver.LookupAddr",
                "Resolver.LookupCNAME",
                "Resolver.LookupMX",
                "Resolver.LookupNS",
                "Resolver.LookupSRV"
            ]
        }
    ]
}