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Sanitizer bypass in svg-sanitizer

Moderate severity GitHub Reviewed Published Feb 27, 2020 to the GitHub Advisory Database • Updated Jan 9, 2023

Package

composer enshrined/svg-sanitize (Composer)

Affected versions

< 0.13.1

Patched versions

0.13.1

Description

It is possible to bypass enshrined/svg-sanitize before 0.13.1 using the "xlink:href" attribute due to mishandling of the xlink namespace by the sanitizer.

References

Reviewed Feb 25, 2020
Published to the GitHub Advisory Database Feb 27, 2020
Last updated Jan 9, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS score

0.099%
(42nd percentile)

Weaknesses

CVE ID

CVE-2019-10772

GHSA ID

GHSA-8rc5-hx3v-2jg7

Source code

No known source code
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