CVE-2021-21236

· MEDIUMModified

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CVSS v3.1

5.7

EPSS

1.47%

Published

Jan 6, 2021

Modified

Nov 21, 2024

Public PoC / Exploit (1)

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Links to public security research (Exploit-DB, Nuclei, Trickest, GitHub) for defensive use only.

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.

CVSS Vector

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

Weaknesses (CWE)

CWE-400

Affected Products (1)

courtbouillon · cairosvg (up to 2.5.1)vulnerable

References (8)

https://github.com/Kozea/CairoSVG/commit/cfc9175e590531d90384aa88845052de53d94bf3

PatchThird Party Advisory

https://github.com/Kozea/CairoSVG/releases/tag/2.5.1

Release NotesThird Party Advisory

https://github.com/Kozea/CairoSVG/security/advisories/GHSA-hq37-853p-g5cf