PT-2021-20171 · Plone · Plone

Igor Margitich · Published 2021-05-21 · Updated 2021-06-08 · CVE-2021-33513

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Plone versions through 5.2.4

Description The issue allows for cross-site scripting (XSS) attacks via the inline diff methods in Products.CMFDiffTool. This can potentially lead to malicious script execution on the client-side.

Recommendations For Plone versions through 5.2.4, consider disabling the inline diff methods in Products.CMFDiffTool as a temporary workaround until a patch is available. Restrict access to the affected Products.CMFDiffTool module to minimize the risk of exploitation.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-33513

GHSA-FJ67-W3M4-RFMP

PYSEC-2021-85

Affected Products

Plone

References · 12

• https://nvd.nist.gov/vuln/detail/CVE-2021-33513 · Security Note
• https://plone.org/security/hotfix/20210518/xss-vulnerability-in-cmfdifftool · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-33513 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-85 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-fj67-w3m4-rfmp · Vendor Advisory
• https://github.com/pypa/advisory-database/tree/main/vulns/plone/PYSEC-2021-85.yaml · Note
• https://github.com/plone/Plone · Note
• https://t.me/cvenotify/14848 · Telegram Post
• https://t.me/cvenotify/14890 · Telegram Post
• https://github.com/advisories/GHSA-fj67-w3m4-rfmp · Note
• https://t.me/cvenotify/14856 · Telegram Post
• http://openwall.com/lists/oss-security/2021/05/22/1 · Note