CVE-2024-21485: dash XSS — Exploit & Fix

Description

Versions of the package dash-core-components before 2.13.0; versions of the package dash-core-components before 2.0.0; versions of the package dash before 2.15.0; versions of the package dash-html-components before 2.0.0; versions of the package dash-html-components before 2.0.16 are vulnerable to Cross-site Scripting (XSS) when the href of the a tag is controlled by an adversary. An authenticated attacker who stores a view that exploits this vulnerability could steal the data that's visible to another user who opens that view - not just the data already included on the page, but they could also, in theory, make additional requests and access other data accessible to this user. In some cases, they could also steal the access tokens of that user, which would allow the attacker to act as that user, including viewing other apps and resources hosted on the same server. **Note:** This is only exploitable in Dash apps that include some mechanism to store user input to be reloaded by a different user.

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:L/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
plotly	dash	< 2.13.0
plotly	dash	2.14.0 — 2.15.0

References

Advisories & Patches

https://github.com/plotly/dash/commit/9920073c9a8619ae8f90fcec1924f2f3a4332a8c https://github.com/plotly/dash/pull/2732 https://github.com/plotly/dash/commit/9920073c9a8619ae8f90fcec1924f2f3a4332a8c https://github.com/plotly/dash/pull/2732

Exploits

Other References

https://github.com/plotly/dash/releases/tag/v2.15.0 https://github.com/plotly/dash/releases/tag/v2.15.0

Frequently Asked Questions

What is CVE-2024-21485? +

Versions of the package dash-core-components before 2.13.0; versions of the package dash-core-components before 2.0.0; versions of the package dash before 2.15.0; versions of the package dash-html-components before 2.0.0; versions of the package dash-html-components before 2.0.16 are vulnerable to Cross-site Scripting (XSS) when the href of the a tag is controlled by an adversary. An authenticated attacker who stores a view that exploits this vulnerability could steal the data that's visible to another user who opens that view - not just the data already included on the page, but they could also, in theory, make additional requests and access other data accessible to this user. In some cases, they could also steal the access tokens of that user, which would allow the attacker to act as that user, including viewing other apps and resources hosted on the same server. **Note:** This is only exploitable in Dash apps that include some mechanism to store user input to be reloaded by a different user. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2024-21485? +

CVE-2024-21485 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-21485? +

CVE-2024-21485 affects products from plotly, specifically: dash. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-21485? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2024-21485