Regular Expression Denial of Service in CairoSVG
CVE-2021-21236

5.7MEDIUM

Key Information:

Vendor

Kozea

Status
Cairosvg
Vendor
CVE Published:
6 January 2021

What is CVE-2021-21236?

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.

Affected Version(s)

CairoSVG < 2.5.1

References

https://github.com/Kozea/CairoSVG/security/advisories/GHS...
x_refsource_CONFIRM
https://pypi.org/project/CairoSVG/
x_refsource_MISC
https://github.com/Kozea/CairoSVG/commit/cfc9175e590531d9...
x_refsource_MISC

CVSS V3.1

Score:
5.7
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.