389-ds-base up to 1.4.3 Hash Comparison improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability has been found in 389-ds-base up to 1.4.3 and classified as critical. This affects an unknown function of the component Hash Comparison. Performing a manipulation results in improper authentication. This vulnerability is known as CVE-2017-15135. Remote exploitation of the attack is possible. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, was found in 389-ds-base up to 1.4.3. This affects an unknown part of the component Hash Comparison. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

It was found that 389-ds-base since 1.3.6.1 up to and including 1.4.0.3 did not always handle internal hash comparison operations correctly during the authentication process. A remote, unauthenticated attacker could potentially use this flaw to bypass the authentication process under very rare and specific circumstances.

The bug was discovered 10/08/2017. The weakness was published 01/24/2018 by Martin as Bug 1525628 as confirmed bug report (Bugzilla). It is possible to read the advisory at bugzilla.redhat.com. This vulnerability is uniquely identified as CVE-2017-15135 since 10/08/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 108 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 108320 (Oracle Linux 6 : 389-ds-base (ELSA-2018-0515)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 172387 (OpenSUSE Security Update for 389-ds (openSUSE-SU-2019:1397-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (108320) and SecurityFocus (BID 102811†). Similar entries are available at VDB-113960 and VDB-114178. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
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

Class: Improper authentication
CWE: CWE-287
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: 108320
Nessus Name: Oracle Linux 6 : 389-ds-base (ELSA-2018-0515)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 65581
OpenVAS Name: CentOS Update for 389-ds-base CESA-2018:0515 centos6
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

10/08/2017 🔍
10/08/2017 +0 days 🔍
01/22/2018 +106 days 🔍
01/24/2018 +2 days 🔍
01/24/2018 +0 days 🔍
01/25/2018 +1 days 🔍
03/13/2018 +47 days 🔍
03/14/2018 +1 days 🔍
12/27/2019 +653 days 🔍

Sourcesinfo

Advisory: Bug 1525628
Researcher: Martin
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-15135 (🔍)
GCVE (CVE): GCVE-0-2017-15135
GCVE (VulDB): GCVE-100-112395
SecurityFocus: 102811 - Red Hat '389-ds-base' CVE-2017-15135 Authentication Bypass Vulnerability

See also: 🔍

Entryinfo

Created: 01/25/2018 08:15
Updated: 12/27/2019 11:28
Changes: 01/25/2018 08:15 (77), 12/27/2019 11:28 (6)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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