RUSTSEC-2021-0074

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Source

https://rustsec.org/advisories/RUSTSEC-2021-0074

Import Source

https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2021-0074.json

JSON Data

https://api.osv.dev/v1/vulns/RUSTSEC-2021-0074

Aliases

Published

2021-07-08T12:00:00Z

Modified

2023-11-08T04:06:26.105627Z

Summary

Incorrect handling of embedded SVG and MathML leads to mutation XSS

Details

Affected versions of this crate did not account for namespace-related parsing differences between HTML, SVG, and MathML. Even if the svg and math elements are not allowed, the underlying HTML parser still treats them differently. Running cleanup without accounting for these differing namespaces resulted in an "impossible" DOM, which appeared "safe" when examining the DOM tree, but when serialized and deserialized, could be exploited to inject arbitrary markup.

To exploit this, the application using this library must allow a tag that is parsed as raw text in HTML. These [elements] are:

title
textarea
xmp
iframe
noembed
noframes
plaintext
noscript
style
script

Applications that do not explicitly allow any of these tags should not be affected, since none are allowed by default.

Database specific

{
    "license": "CC0-1.0"
}

References

Affected packages

crates.io / ammonia

Package

Name: ammonia; View open source insights on deps.dev
Purl: pkg:cargo/ammonia

Affected ranges

Type: SEMVER
Events: Introduced

0.0.0-0

Fixed

2.1.3

Introduced

3.0.0

Fixed

3.1.0

Ecosystem specific

{
    "affected_functions": null,
    "affects": {
        "os": [],
        "functions": [],
        "arch": []
    }
}

Database specific

{
    "cvss": null,
    "informational": null,
    "categories": [
        "format-injection"
    ]
}