Denial of Service Vulnerability in Samba by Samba Team
CVE-2018-16851

6.5MEDIUM

Key Information:

Vendor

[unknown]

Status
Samba
Vendor
CVE Published:
28 November 2018

What is CVE-2018-16851?

Samba, versions up to and including 4.9.3, suffers from a denial of service vulnerability due to memory management issues during LDAP searches. When processing an LDAP query, Samba caches entries in a single memory object with a limit of 256MB. If this limit is reached, the server may follow a NULL pointer, resulting in the termination of the LDAP service. This vulnerability does not pose a direct exploit beyond causing service interruptions.

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Affected Version(s)

samba 4.7.12

samba 4.8.7

samba 4.9.3

References

http://www.securityfocus.com/bid/106027
vdb-entryx_refsource_BID
https://usn.ubuntu.com/3827-2/
vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3827-1/
vendor-advisoryx_refsource_UBUNTU

EPSS Score

13% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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