Skip to content

Zope vulnerable to Stored Cross Site Scripting with SVG images

Low severity GitHub Reviewed Published Sep 21, 2023 in zopefoundation/Zope • Updated Nov 4, 2023

Package

pip Zope (pip)

Affected versions

<= 4.8.9
>= 5.8.0, <= 5.8.4

Patched versions

4.8.10
5.8.5

Description

Impact

There is a stored cross site scripting vulnerability for SVG images.

Note that an image tag with an SVG image as source is never vulnerable, even when the SVG image contains malicious code. To exploit the vulnerability, an attacker would first need to upload an image, and then trick a user into following a specially crafted link.

All versions of Zope are impacted on sites that allow untrusted users to upload images.

Patches

Patches will be released in Zope 4.8.10 and 5.8.5.

Workarounds

Make sure the "Add Documents, Images, and Files" permission is only assigned to trusted roles. By default only the Manager has this permission.

References

@icemac icemac published to zopefoundation/Zope Sep 21, 2023
Published to the GitHub Advisory Database Sep 21, 2023
Reviewed Sep 21, 2023
Published by the National Vulnerability Database Sep 21, 2023
Last updated Nov 4, 2023

Severity

Low

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
High
Privileges required
Low
User interaction
Required
Scope
Unchanged
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:H/PR:L/UI:R/S:U/C:L/I:L/A:N

EPSS score

0.094%
(41st percentile)

Weaknesses

CVE ID

CVE-2023-42458

GHSA ID

GHSA-wm8q-9975-xh5v

Source code

Credits

Loading Checking history
See something to contribute? Suggest improvements for this vulnerability.