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Tivoli Directory Server CVE-2015-1959

MEDIUM
Improper Access Control (CWE-284)
2015-06-28 psirt@us.ibm.com
Authentication Bypass IBM Tivoli Directory Server
4.6
CVSS 2.0 · NVD
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Vulnerability Assessment

Weakness
CWE
CWE-284
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Access control enforcement
MITRE ATT&CK

1 technique across 1 tactic: Defense Evasion

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

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Impact

CVSS score of 4.6 (MEDIUM). Attack characteristics: local attack vector, low complexity. EPSS exploitation probability: 0.05%.
Exploit ScenarioDerived

Successful exploitation could compromise the medium-severity affected system.
This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.0% exploitation probability (EPSS)

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AnalysisAI

IBM Tivoli Security Directory Server 6.0 before iFix 75, 6.1 before iFix 68, 6.2 before iFix 44, 6.3 before iFix 37, 6.3.1 before iFix 11, and 6.4 before iFix 2 does not properly restrict encrypted. Rated medium severity (CVSS 4.6), this vulnerability is low attack complexity.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

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Technical ContextAI · show details

This vulnerability is classified under CWE-284. IBM Tivoli Security Directory Server 6.0 before iFix 75, 6.1 before iFix 68, 6.2 before iFix 44, 6.3 before iFix 37, 6.3.1 before iFix 11, and 6.4 before iFix 2 does not properly restrict encrypted files, which allows local users to obtain sensitive information or possibly have unspecified other impact via a (1) download or (2) upload action. Affected products include: Ibm Tivoli Directory Server.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

NVD PRIMARY 4.6 MEDIUM
AV:L/AC:L/Au:N/C:P/I:P/A:P

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Local
Attack Complexity
Low
Confidentiality
P
Integrity
P
Availability
P

DescriptionCVE.org

IBM Tivoli Security Directory Server 6.0 before iFix 75, 6.1 before iFix 68, 6.2 before iFix 44, 6.3 before iFix 37, 6.3.1 before iFix 11, and 6.4 before iFix 2 does not properly restrict encrypted files, which allows local users to obtain sensitive information or possibly have unspecified other impact via a (1) download or (2) upload action.

Threat Intelligence Overview

EPSS Score
0.0%
Top 85% exploitable
Data Quality
3 sources
Confidence: Low
NVD CVE.org EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.0%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation· derived
None
System Exposure· derived
Small
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

23
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +23
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication Bypass CRITICAL

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)CVE.org

cpe:2.3:a:ibm:tivoli_directory_server:6.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_directory_server:6.1.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_directory_server:6.2.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_directory_server:6.3.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_directory_server:6.3.1.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_directory_server:6.4.0:*:*:*:*:*:*:*

More in Tivoli Directory Server

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7.5 Aug 08

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Directory traversal vulnerability in the Web Administration tool in IBM Tivoli Directory Server (ITDS) before 6.1.0.74-I
CVE-2015-1974 MEDIUM
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The web administration tool in IBM Tivoli Security Directory Server 6.0 before iFix 75, 6.1 before iFix 68, 6.2 before i
CVE-2012-0726 MEDIUM
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The default configuration of TLS in IBM Tivoli Directory Server (TDS) 6.3 and earlier supports the (1) NULL-MD5 and (2)

CVE-2012-2191 MEDIUM
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IBM Global Security Kit (aka GSKit) before 8.0.14.22, as used in IBM Rational Directory Server, IBM Tivoli Directory Ser
CVE-2015-1976 MEDIUM
5.5 Feb 08

IBM Security Directory Server could allow an authenticated user to execute commands into the web administration tool tha
CVE-2012-0743 MEDIUM
5.0 Apr 22

IBM Tivoli Directory Server (TDS) 6.3 and earlier allows remote attackers to cause a denial of service (daemon crash) vi
CVE-2015-0138 MEDIUM
4.3 Mar 25

GSKit in IBM Tivoli Directory Server (ITDS) 6.0 before 6.0.0.73-ISS-ITDS-IF0073, 6.1 before 6.1.0.66-ISS-ITDS-IF0066, 6.
CVE-2012-0740 MEDIUM
4.3 Apr 22

Cross-site scripting (XSS) vulnerability in the Web Admin Tool in IBM Tivoli Directory Server (TDS) 6.2 before 6.2.0.22

CVE-2015-1978 MEDIUM
4.3 Jun 28

Cross-site scripting (XSS) vulnerability in IBM Tivoli Security Directory Server 6.0 before iFix 75, 6.1 before iFix 68,
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IBM Tivoli Security Directory Server 6.0 before iFix 75, 6.1 before iFix 68, 6.2 before iFix 44, 6.3 before iFix 37, 6.3

Same weakness CWE-284 – Improper Access Control

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CVE-2012-5076 CRITICAL POC
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CVE-2014-3120 HIGH POC
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CVE-2016-3427 CRITICAL
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Same technique Authentication Bypass

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CVE-2025-61882 CRITICAL POC
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CVE-2024-0012 CRITICAL POC
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References

Advisories & patches
PATCH http://www-01.ibm.com/support/docview.wss?uid=swg21960659 REF http://www.securityfocus.com/bid/75442 REF http://www.securitytracker.com/id/1032734

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