Samba 4.0.0 LDAP Server Password permission

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability has been found in Samba 4.0.0 and classified as critical. Affected by this issue is some unknown functionality of the component LDAP Server. The manipulation leads to permission (Password). This vulnerability is uniquely identified as CVE-2018-1057. The attack is possible to be carried out remotely. No exploit exists. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in Samba 4.0.0 (File Transfer Software) and classified as critical. This issue affects an unknown part of the component LDAP Server. The manipulation with an unknown input leads to a permission vulnerability (Password). Using CWE to declare the problem leads to CWE-275. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

On a Samba 4 AD DC the LDAP server in all versions of Samba from 4.0.0 onwards incorrectly validates permissions to modify passwords over LDAP allowing authenticated users to change any other users' passwords, including administrative users and privileged service accounts (eg Domain Controllers).

The bug was discovered 03/13/2018. The weakness was disclosed 03/13/2018 by ERNE as Bug 1553553 as confirmed bug report (Bugzilla). It is possible to read the advisory at bugzilla.redhat.com. The identification of this vulnerability is CVE-2018-1057 since 12/04/2017. The attack may be initiated remotely. A simple authentication is necessary for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1222 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 109974 (GLSA-201805-07 : Samba: Multiple vulnerabilities (SambaCry)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 38707 (Samba Server Multiple Vulnerabilities).

Applying a patch is able to eliminate this problem. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (109974) and SecurityFocus (BID 103382†). The entry VDB-114466 is pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Password
Class: Permission / Password
CWE: CWE-275 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 109974
Nessus Name: GLSA-201805-07 : Samba: Multiple vulnerabilities (SambaCry)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802426
OpenVAS Name: Fedora Update for samba FEDORA-2018-7d0acd608b
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

12/04/2017 🔍
03/12/2018 +98 days 🔍
03/13/2018 +1 days 🔍
03/13/2018 +0 days 🔍
03/13/2018 +0 days 🔍
03/14/2018 +1 days 🔍
05/22/2018 +69 days 🔍
05/23/2018 +1 days 🔍
02/21/2023 +1735 days 🔍

Sourcesinfo

Product: samba.org

Advisory: Bug 1553553
Researcher: ERNE
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-1057 (🔍)
GCVE (CVE): GCVE-0-2018-1057
GCVE (VulDB): GCVE-100-114467

OVAL: 🔍

SecurityFocus: 103382 - Samba CVE-2018-1057 Remote Security Bypass Vulnerability
SecurityTracker: 1040494

See also: 🔍

Entryinfo

Created: 03/14/2018 07:56
Updated: 02/21/2023 15:28
Changes: 03/14/2018 07:56 (79), 01/13/2020 08:48 (6), 02/21/2023 15:28 (4)
Complete: 🔍
Cache ID: 216::103

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