CVE-2016-2123

Published on: 11/01/2018 12:00:00 AM UTC

Last Modified on: 03/23/2021 11:27:15 PM UTC

CVE-2016-2123

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Certain versions of Samba from Samba contain the following vulnerability:

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.

  • CVE-2016-2123 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as HIGH severity.
  • Affected Vendor/Software: URL Logo [UNKNOWN] - samba version versions 4.0.0 to 4.5.2

CVSS3 Score: 8.8 - HIGH

Attack
Vector ⓘ		 Attack
Complexity		 Privileges
Required		 User
Interaction
NETWORK LOW LOW NONE
Scope Confidentiality
Impact		 Integrity
Impact		 Availability
Impact
UNCHANGED HIGH HIGH HIGH

CVSS2 Score: 6.5 - MEDIUM

Access
Vector ⓘ		 Access
Complexity		 Authentication
NETWORK LOW SINGLE
Confidentiality
Impact		 Integrity
Impact		 Availability
Impact
PARTIAL PARTIAL PARTIAL

CVE References

Description Tags ⓘ Link
Samba CVE-2016-2123 Heap Based Buffer Overflow Vulnerability Third Party Advisory
VDB Entry
cve.report (archive)
text/html
 URL Logo BID 94970
Samba - Security Announcement Archive Patch
Vendor Advisory
www.samba.org
text/html
 URL Logo CONFIRM www.samba.org/samba/security/CVE-2016-2123.html
Samba Buffer Overflow in ndr_pull_dnsp_name() Lets Remote Authenticated Users Execute Arbitrary Code - SecurityTracker Third Party Advisory
VDB Entry
www.securitytracker.com
text/html
 URL Logo SECTRACK 1037493
1392702 – (CVE-2016-2123) CVE-2016-2123 samba: NDR Parsing ndr_pull_dnsp_name Heap-based Buffer Overflow Remote Code Execution Vulnerability (ZDI-CAN-3995) Issue Tracking
bugzilla.redhat.com
text/html
 URL Logo CONFIRM bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-2123
By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
ApplicationSambaSambaAllAllAllAll
  • cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*: