CVE-2021-21236

Public Exploit
Regular Expression Denial of Service in CairoSVG

Description

CairoSVG is a Python (pypi) package. CairoSVG is an SVG converter based on Cairo. In CairoSVG before version 2.5.1, there is a regular expression denial of service (REDoS) vulnerability. When processing SVG files, the python package CairoSVG uses two regular expressions which are vulnerable to Regular Expression Denial of Service (REDoS). If an attacker provides a malicious SVG, it can make cairosvg get stuck processing the file for a very long time. This is fixed in version 2.5.1. See Referenced GitHub advisory for more information.

Category

5.7
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.09%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory pypi.org
Affected: Kozea CairoSVG
Published at:
Updated at:

References

Link Tags
https://github.com/Kozea/CairoSVG/security/advisories/GHSA-hq37-853p-g5cf third party advisory exploit
https://pypi.org/project/CairoSVG/ product third party advisory
https://github.com/Kozea/CairoSVG/commit/cfc9175e590531d90384aa88845052de53d94bf3 third party advisory patch
https://github.com/Kozea/CairoSVG/releases/tag/2.5.1 third party advisory release notes

Frequently Asked Questions

What is the severity of CVE-2021-21236?
CVE-2021-21236 has been scored as a medium severity vulnerability.
How to fix CVE-2021-21236?
To fix CVE-2021-21236, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-21236 being actively exploited in the wild?
It is possible that CVE-2021-21236 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-21236?
CVE-2021-21236 affects Kozea CairoSVG.
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