PT-2022-11429 · Silverstripe · Silverstripe/Framework

Matthew Dekker · Published 2022-06-28 · Updated 2024-03-06 · CVE-2021-41559

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Silverstripe silverstripe/framework versions 4.8.1 through 4.10.9

Description The issue is related to a quadratic blowup in the Convert::xml2array() function, which can be exploited via a crafted XML document to enable a remote attack.

Recommendations For versions 4.8.1 through 4.10.9, consider disabling the Convert::xml2array() function until a patch is available to prevent potential exploitation. Restrict access to crafted XML documents to minimize the risk of a remote attack.

Exploit

Fix

XML Entity Expansion

Weakness Enumeration

CWE-776

Related Identifiers

BIT-SILVERSTRIPE-2021-41559

CVE-2021-41559

GHSA-9FMG-89FX-R33W

Affected Products

Silverstripe/Framework

References · 11

• 🔥 https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/framework/CVE-2021-41559.yaml · Exploit
• https://github.com/silverstripe/silverstripe-framework/releases · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-41559 · Security Note
• https://osv.dev/vulnerability/BIT-silverstripe-2021-41559 · Vendor Advisory
• https://silverstripe.org/download/security-releases · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-41559 · Vendor Advisory
• https://silverstripe.org/download/security-releases/cve-2021-41559 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-9fmg-89fx-r33w · Vendor Advisory
• https://t.me/cvenotify/32759 · Telegram Post
• https://t.me/cibsecurity/45346 · Telegram Post
• https://t.me/cvenotify/32331 · Telegram Post