DEBIAN-CVE-2016-2123

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2016-2123
Downstream
DSA-3740-1
Published: 01 Nov 2018, 13:29
Last modified:28 Apr 2026, 20:15

Vulnerability Summary

Overall Risk (default)
medium
35/100
CVSS Score
8.8 HIGH
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

01 Nov 2018, 13:29
Published
Vulnerability first disclosed
28 Apr 2026, 20:15
Last Modified
Vulnerability information updated

Description

A flaw was found in samba versions 4.0.0 to 4.5.2. The Samba routine ndr_pull_dnsp_name contains an integer wrap problem, leading to an attacker-controlled memory overwrite. ndr_pull_dnsp_name parses data from the Samba Active Directory ldb database. Any user who can write to the dnsRecord attribute over LDAP can trigger this memory corruption. By default, all authenticated LDAP users can write to the dnsRecord attribute on new DNS objects. This makes the defect a remote privilege escalation.

CVSS Metrics

  • v3.1•HIGH•Score: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Systems

  • debian•samba

    < 2:4.5.2+dfsg-2 | < 2:4.5.2+dfsg-2 | < 2:4.5.2+dfsg-2 | < 2:4.5.2+dfsg-2

References (1)