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fix(deps): update dependency fast-xml-parser to v4.2.4 [security] #29

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@renovate renovate bot commented Jun 9, 2023

Mend Renovate

This PR contains the following updates:

Package Change Age Adoption Passing Confidence
fast-xml-parser 4.0.10 -> 4.2.4 age adoption passing confidence

GitHub Vulnerability Alerts

CVE-2023-34104

Impact

"fast-xml-parser" allows special characters in entity names, which are not escaped or sanitized. Since the entity name is used for creating a regex for searching and replacing entities in the XML body, an attacker can abuse it for DoS attacks. By crafting an entity name that results in an intentionally bad performing regex and utilizing it in the entity replacement step of the parser, this can cause the parser to stall for an indefinite amount of time.

Patches

The problem has been resolved in v4.2.4

Workarounds

Avoid using DOCTYPE parsing by processEntities: false option.

References

Are there any links users can visit to find out more?

CVE-2023-26920

Impact

As a part of this vulnerability, user was able to se code using __proto__ as a tag or attribute name.

const { XMLParser, XMLBuilder, XMLValidator} = require("fast-xml-parser");

let XMLdata = "<__proto__><polluted>hacked</polluted></__proto__>"

const parser = new XMLParser();
let jObj = parser.parse(XMLdata);

console.log(jObj.polluted) // should return hacked

Patches

The problem has been patched in v4.1.2

Workarounds

User can check for "proto" in the XML string before parsing it to the parser.

References

https://gist.github.com/Sudistark/a5a45bd0804d522a1392cb5023aa7ef7


Release Notes

NaturalIntelligence/fast-xml-parser (fast-xml-parser)

v4.2.4: Security Fix

Compare Source

Update to this release if you use entity parsing in Fast XML Parser.

v4.2.3

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v4.2.2

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v4.2.1

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v4.2.0

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v4.1.4

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v4.1.3

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v4.1.2

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v4.1.1

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v4.1.0

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v4.0.15

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v4.0.14

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v4.0.13

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v4.0.12

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v4.0.11

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