PT-2023-11480 · Unknown · Ucs@School

Christian Völker · Published 2023-10-26 · Updated 2023-11-16 · CVE-2020-17477

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions UCS@school versions prior to 4.4v5-errata

Description The issue is related to incorrect LDAP ACLs in ucs-school-ldap-acls-master, allowing remote teachers, staff, and school administrators to read LDAP password hashes, including sambaNTPassword, krb5Key, sambaPasswordHistory, and pwhistory, via LDAP search requests. This could enable a teacher to gain administrator access via an NTLM hash.

Recommendations For versions prior to 4.4v5-errata, update to version 4.4v5-errata or later to resolve the issue. As a temporary workaround, consider restricting access to the LDAP search requests to minimize the risk of exploitation.

Fix

Insufficiently Protected Credentials

Weakness Enumeration

CWE-522

Related Identifiers

CVE-2020-17477

Affected Products

Ucs@School

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2020-17477 · Security Note
• https://osv.dev/vulnerability/CVE-2020-17477 · Vendor Advisory
• https://twitter.com/CVEnew/status/1717524639851692512 · Twitter Post
• https://twitter.com/DMFezzaReedCISA/status/1717546098288431365 · Twitter Post
• https://t.me/cibsecurity/72954 · Telegram Post
• https://forge.univention.org/bugzilla/show_bug.cgi?id=50669 · Note