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Tivoli Directory Server CVE-2015-0138

MEDIUM
Cryptographic Issues (CWE-310)
2015-03-25 psirt@us.ibm.com
Information Disclosure IBM Tivoli Directory Server
4.3
CVSS 2.0 · NVD
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Vulnerability Assessment

Weakness
CWE
CWE-310
OWASP Top 10:2025
A04:2025 - Cryptographic Failures
ASVS 5.0
V11 - Cryptography Cryptographic controls
Impact

CVSS score of 4.3 (MEDIUM). Attack characteristics: network attack vector, M complexity. EPSS exploitation probability: 0.92%.
Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. 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 0.9% exploitation probability (EPSS)

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AnalysisAI

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, 6.2 before 6.2.0.42-ISS-ITDS-IF0042, and 6.3 before 6.3.0.35-ISS-ITDS-IF0035 and. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable.

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.

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Technical ContextAI · show details

This vulnerability is classified under CWE-310. 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, 6.2 before 6.2.0.42-ISS-ITDS-IF0042, and 6.3 before 6.3.0.35-ISS-ITDS-IF0035 and IBM Security Directory Server (ISDS) 6.3.1 before 6.3.1.9-ISS-ISDS-IF0009 does not properly restrict TLS state transitions, which makes it easier for remote attackers to conduct cipher-downgrade attacks to EXPORT_RSA ciphers via crafted TLS traffic, related to the "FREAK" issue, a different vulnerability than CVE-2015-0204. Affected products include: Ibm Tivoli Directory Server. Version information: before 6.0.0.73.

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Severity by source

NVD PRIMARY 4.3 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
M
Confidentiality
None
Integrity
P
Availability
None

DescriptionCVE.org

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, 6.2 before 6.2.0.42-ISS-ITDS-IF0042, and 6.3 before 6.3.0.35-ISS-ITDS-IF0035 and IBM Security Directory Server (ISDS) 6.3.1 before 6.3.1.9-ISS-ISDS-IF0009 does not properly restrict TLS state transitions, which makes it easier for remote attackers to conduct cipher-downgrade attacks to EXPORT_RSA ciphers via crafted TLS traffic, related to the "FREAK" issue, a different vulnerability than CVE-2015-0204.

Threat Intelligence Overview

EPSS Score
0.9%
Top 24% 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 0.9%
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
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

23
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +22
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)CVE.org

cpe:2.3:a:ibm:tivoli_directory_server:*:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_directory_server:6.1.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_directory_server:6.1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_directory_server:6.1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_directory_server:6.1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_directory_server:6.1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_directory_server:6.1.0.4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_directory_server:6.1.0.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_directory_server:6.1.0.6:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_directory_server:6.1.0.7:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_directory_server:6.1.0.8:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_directory_server:6.1.0.9:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_directory_server:6.1.0.10:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_directory_server:6.1.0.11:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_directory_server:6.1.0.12:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_directory_server:6.1.0.13:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_directory_server:6.1.0.14:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_directory_server:6.1.0.15:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_directory_server:6.1.0.17:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_directory_server:6.1.0.18:*:*:*:*:*:*:*
+ 120 more

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CVE-2015-1978 MEDIUM
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Same weakness CWE-310 – Cryptographic Issues

View all
CVE-2015-0204 MEDIUM POC
4.3
CVE-2015-4000 LOW POC
3.7
CVE-2014-3566 LOW POC
3.4
CVE-2014-8684 CRITICAL POC
9.8
CVE-2012-1803 HIGH POC
8.5
CVE-2013-4787 CRITICAL POC
9.3
CVE-2014-8686 CRITICAL POC
9.8
CVE-2013-0137 CRITICAL
10.0

Same technique Information Disclosure

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CVE-2019-2725 CRITICAL POC
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CVE-2021-34523 CRITICAL POC
9.0
CVE-2013-2251 CRITICAL POC
9.8
CVE-2017-5638 CRITICAL POC
9.8
CVE-2025-24813 CRITICAL POC
9.8
CVE-2025-68613 HIGH POC
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CVE-2015-1701 HIGH POC
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CVE-2017-0147 HIGH POC
7.5

References

Advisories & patches
PATCH http://www-01.ibm.com/support/docview.wss?uid=swg21698703 ADVISORY http://www-01.ibm.com/support/docview.wss?uid=swg21883640 REF http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00013.html REF http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00014.html REF http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00015.html REF http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00022.html REF http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00031.html REF http://rhn.redhat.com/errata/RHSA-2015-1006.html REF http://rhn.redhat.com/errata/RHSA-2015-1007.html REF http://rhn.redhat.com/errata/RHSA-2015-1020.html REF http://rhn.redhat.com/errata/RHSA-2015-1021.html REF http://rhn.redhat.com/errata/RHSA-2015-1091.html REF http://www.securityfocus.com/bid/73326

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