PT-2021-23680 · Opnsense · Opnsense

Arthur Naullet · Published 2021-11-08 · Updated 2022-07-28 · CVE-2021-42770

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions OPNsense versions prior to 21.7.4

Description A Cross-site scripting (XSS) vulnerability was discovered in OPNsense via the LDAP attribute return in the authentication tester. This issue allows for potential exploitation through the LDAP attribute return, which is used in the authentication tester.

Recommendations For OPNsense versions prior to 21.7.4, update to version 21.7.4 or later to resolve the issue. As a temporary workaround, consider restricting access to the authentication tester until a patch is applied.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-42770

GHSA-R32J-XGG3-W2RW

Affected Products

Opnsense

References · 7

• 🔥 https://github.com/orangecertcc/security-research/security/advisories/GHSA-r32j-xgg3-w2rw · Exploit
• https://opnsense.org/opnsense-21-7-4-released · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-42770 · Security Note
• https://osv.dev/vulnerability/CVE-2021-42770 · Vendor Advisory
• https://t.me/cvenotify/33939 · Telegram Post
• https://cert.orange.com · Note
• https://t.me/cibsecurity/31983 · Telegram Post