medium
6.1
CWE
79 80
Advisory Published
CVE Published
Updated

CVE-2023-37259: Cross site scripting in Export Chat feature

First published: Tue Jul 18 2023(Updated: )

### Description The Export Chat feature includes certain attacker-controlled elements in the generated document without sufficient escaping, leading to stored XSS. ### Impact Since the Export Chat feature generates a separate document, an attacker can only inject code run from the `null` origin, restricting the impact. However, the attacker can still potentially use the XSS to leak message contents. A malicious homeserver is a potential attacker since the affected inputs are controllable server-side. ### Patches This was patched in matrix-react-sdk 3.76.0. ### Workarounds None, other than not using the Export Chat feature. ### References N/A

Credit: security-advisories@github.com security-advisories@github.com security-advisories@github.com

Affected SoftwareAffected VersionHow to fix
npm/matrix-react-sdk>=3.32.0<3.76.0
3.76.0
Matrix React SDK>=3.32.0<3.76.0
Matrix React SDK=3.76.0-rc1
Matrix React SDK=3.76.0-rc2

Remedy

https://github.com/matrix-org/matrix-react-sdk/commit/22fcd34c606f32129ebc967fc21f24fb708a98b8

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2023-37259?

    CVE-2023-37259 is considered a high severity vulnerability due to the potential for stored cross-site scripting (XSS) attacks.

  • How do I fix CVE-2023-37259?

    To fix CVE-2023-37259, you should update the Matrix React SDK to version 3.76.0 or later.

  • What is stored XSS in the context of CVE-2023-37259?

    Stored XSS in CVE-2023-37259 refers to the ability of an attacker to inject malicious scripts into generated documents via the Export Chat feature.

  • Which versions of the Matrix React SDK are affected by CVE-2023-37259?

    CVE-2023-37259 affects Matrix React SDK versions between 3.32.0 and 3.76.0, inclusive.

  • Can CVE-2023-37259 affect user data security?

    Yes, CVE-2023-37259 can compromise user data security by allowing attackers to execute scripts within the context of a user's session.

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