CVE-2016-2123

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 v3 8.8 HIGH
CVSS v2.0 6.5 MEDIUM

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.5^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:P/I:P/A:P

Exploitability : 8.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
http://www.securityfocus.com/bid/94970	Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1037493	Third Party Advisory VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-2123	Issue Tracking
https://www.samba.org/samba/security/CVE-2016-2123.html	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:samba:samba::::::::
	cpe:2.3:a:samba:samba::::::::
	cpe:2.3:a:samba:samba::::::::
	cpe:2.3:a:samba:samba::::::::
	cpe:2.3:a:samba:samba::::::::
	cpe:2.3:a:samba:samba::::::::

History

No history.

Information

Published : 2018-11-01 13:29

Updated : 2024-02-08 02:10

NVD link : CVE-2016-2123

Mitre link : CVE-2016-2123

CVE.ORG link : CVE-2016-2123

JSON object : View

Products Affected

samba

samba

CWE

CWE-122

Heap-based Buffer Overflow

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

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