Samba up to 4.7.11/4.8.6/4.9.2 LDAP Server resource consumption

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability has been found in Samba up to 4.7.11/4.8.6/4.9.2 and classified as problematic. This issue affects some unknown processing of the component LDAP Server. Performing a manipulation results in resource consumption. This vulnerability was named CVE-2018-14629. The attack needs to be approached locally. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Samba up to 4.7.11/4.8.6/4.9.2 (File Transfer Software). This affects an unknown part of the component LDAP Server. The manipulation with an unknown input leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability. The summary by CVE is:

A denial of service vulnerability was discovered in Samba's LDAP server before versions 4.7.12, 4.8.7, and 4.9.3. A CNAME loop could lead to infinite recursion in the server. An unprivileged local attacker could create such an entry, leading to denial of service.

The bug was discovered 11/28/2018. The weakness was presented 11/28/2018 as confirmed bug report (Bugzilla). It is possible to read the advisory at bugzilla.redhat.com. This vulnerability is uniquely identified as CVE-2018-14629 since 07/27/2018. Attacking locally is a requirement. A authentication is necessary for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 119246 (FreeBSD : samba -- multiple vulnerabilities (54976998-f248-11e8-81e2-005056a311d1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197311 (Ubuntu Security Notification for Samba Vulnerabilities (USN-3827-1)).

Upgrading to version 4.7.12, 4.8.7 or 4.9.3 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (119246) and SecurityFocus (BID 106022†). See VDB-127270, VDB-127271, VDB-127272 and VDB-127273 for similar entries. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.4

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CNA Base Score: 6.5
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 119246
Nessus Name: FreeBSD : samba -- multiple vulnerabilities (54976998-f248-11e8-81e2-005056a311d1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Samba 4.7.12/4.8.7/4.9.3

Timelineinfo

07/27/2018 🔍
08/14/2018 +18 days 🔍
11/27/2018 +105 days 🔍
11/28/2018 +1 days 🔍
11/28/2018 +0 days 🔍
11/28/2018 +0 days 🔍
11/28/2018 +0 days 🔍
11/29/2018 +1 days 🔍
06/12/2023 +1656 days 🔍

Sourcesinfo

Product: samba.org

Advisory: USN-3827-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-14629 (🔍)
GCVE (CVE): GCVE-0-2018-14629
GCVE (VulDB): GCVE-100-127263

OVAL: 🔍

SecurityFocus: 106022 - Samba CVE-2018-14629 Remote Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 11/29/2018 07:35
Updated: 06/12/2023 07:38
Changes: 11/29/2018 07:35 (74), 04/15/2020 20:14 (5), 06/12/2023 07:32 (4), 06/12/2023 07:38 (12)
Complete: 🔍
Cache ID: 216::103

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