CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.2	$0-$5k	0.00

A vulnerability, which was classified as critical, was found in 389 Directory Server up to 1.3.3.9 (Directory Service Software). This affects some unknown processing of the component Access Restriction. The manipulation as part of a ldapmodrdn Call leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

389 Directory Server before 1.3.3.10 allows attackers to bypass intended access restrictions and modify directory entries via a crafted ldapmodrdn call.

The bug was discovered 02/17/2015. The weakness was presented 09/19/2017 by Simo Sorce with Red Hat (Website). The advisory is shared at lists.fedoraproject.org. This vulnerability is uniquely identified as CVE-2015-1854 since 02/17/2015. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 105 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 83977 (Amazon Linux AMI : 389-ds-base (ALAS-2015-538)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Amazon Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350164 (Amazon Linux Security Advisory for 389-ds-base: ALAS-2015-538).

Upgrading to version 1.3.3.10 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (83977).

Productinfo

Type

• Directory Service Software

Name

• 389 Directory Server

Version

• 1.3.3.0
• 1.3.3.1
• 1.3.3.2
• 1.3.3.3
• 1.3.3.4
• 1.3.3.5
• 1.3.3.6
• 1.3.3.7
• 1.3.3.8
• 1.3.3.9

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.2

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

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
ATT&CK: T1068

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 83977
Nessus Name: Amazon Linux AMI : 389-ds-base (ALAS-2015-538)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 14611
OpenVAS Name: Amazon Linux Local Check: ALAS-2015-538
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: 389 Directory Server 1.3.3.10

Timelineinfo

02/17/2015 🔍
02/17/2015 +0 days 🔍
04/07/2015 +49 days 🔍
06/02/2015 +56 days 🔍
06/04/2015 +2 days 🔍
09/19/2017 +838 days 🔍
09/19/2017 +0 days 🔍
09/20/2017 +1 days 🔍
12/29/2022 +1926 days 🔍

Sourcesinfo

Advisory: RHSA-2015:0895
Researcher: Simo Sorce
Organization: Red Hat
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-1854 (🔍)
SecurityFocus: 74392 - 389 Directory Server CVE-2015-1854 Access Bypass Vulnerability

Entryinfo

Created: 09/20/2017 08:47
Updated: 12/29/2022 12:44
Changes: 09/20/2017 08:47 (64), 11/17/2019 17:04 (8), 01/13/2021 12:45 (12), 12/29/2022 12:44 (3)
Complete: 🔍

Discussion

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