PyPi: Cairosvg

CVE-2021-21236

Safety vulnerability ID: 39419

This vulnerability was reviewed by experts

The information on this page was manually curated by our Cybersecurity Intelligence Team.

Created at Jan 06, 2021 Updated at Mar 29, 2024
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Advisory

Cairosvg 2.5.1 includes a fix for CVE-2021-21236: 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.

Affected package

cairosvg

Latest version: 2.7.1

A Simple SVG Converter based on Cairo

Affected versions

Fixed versions

Vulnerability changelog

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. See CVE-2021-21236.


CONFIRM:https://github.com/Kozea/CairoSVG/security/advisories/GHSA-hq37-853p-g5cf: https://github.com/Kozea/CairoSVG/security/advisories/GHSA-hq37-853p-g5cf
MISC:https://github.com/Kozea/CairoSVG/commit/cfc9175e590531d90384aa88845052de53d94bf3: https://github.com/Kozea/CairoSVG/commit/cfc9175e590531d90384aa88845052de53d94bf3
MISC:https://github.com/Kozea/CairoSVG/releases/tag/2.5.1: https://github.com/Kozea/CairoSVG/releases/tag/2.5.1
MISC:https://pypi.org/project/CairoSVG/: https://pypi.org/project/CairoSVG/

Resources

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Severity Details

CVSS Base Score

MEDIUM 5.5

CVSS v3 Details

MEDIUM 5.5
Attack Vector (AV)
LOCAL
Attack Complexity (AC)
LOW
Privileges Required (PR)
NONE
User Interaction (UI)
REQUIRED
Scope (S)
UNCHANGED
Confidentiality Impact (C)
NONE
Integrity Impact (I)
NONE
Availability Availability (A)
HIGH

CVSS v2 Details

MEDIUM 4.3
Access Vector (AV)
NETWORK
Access Complexity (AC)
MEDIUM
Authentication (Au)
NONE
Confidentiality Impact (C)
NONE
Integrity Impact (I)
NONE
Availability Impact (A)
PARTIAL