CVE-2017-2668· NVD / CVE Program· CNA redhat

389-ds-base before versions 1.3.5.17 and 1.3.6.10 is vulnerable to an invalid pointer dereference in the way LDAP bind requests are handled.

389-ds-base before versions 1.3.5.17 and 1.3.6.10 is vulnerable to an invalid pointer dereference in the way LDAP bind requests are handled. A remote unauthenticated attacker could use this flaw to make ns-slapd crash via a specially crafted LDAP bind request, resulting in denial of service.

MediumCVSS 6.5 · v3.0—No exploit Fix available

Published: Jun 22, 2018
Updated: Jun 16, 2026
EPSS: 2.6% · 85th percentile
CWE: CWE-119

Follow this CVE

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 26 / 40 · 6.5 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 1 / 30 · 2.6%

CNA vs NVD score

NVD: 6.5
CNA · redhat: 6.5; agree

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

Vendor	Product	CPE
fedoraproject	389 directory server	cpe:2.3:a:fedoraproject:389_directory_server
redhat	enterprise linux desktop	cpe:2.3:o:redhat:enterprise_linux_desktop
redhat	enterprise linux server	cpe:2.3:o:redhat:enterprise_linux_server
redhat	enterprise linux workstation	cpe:2.3:o:redhat:enterprise_linux_workstation

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

fedoraproject 389 directory server1.3.5.0 and later · before 1.3.5.17
fedoraproject 389 directory server1.3.6.0 and later · before 1.3.6.10
redhat enterprise linux desktop6.0
redhat enterprise linux desktop7.0
redhat enterprise linux server6.0
redhat enterprise linux server7.0
redhat enterprise linux workstation6.0
redhat enterprise linux workstation7.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

[UNKNOWN] 389-ds-base
- 389-ds-base 1.3.5.17, 389-ds-base 1.3.6.10affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Debian:12	389-ds-base	before 1.3.5.17-1	1.3.5.17-1
Red Hat:enterprise_linux:6::client	389-ds-base	before 0:1.2.11.15-91.el6_9	0:1.2.11.15-91.el6_9
Red Hat:enterprise_linux:6::client	389-ds-base-debuginfo	before 0:1.2.11.15-91.el6_9	0:1.2.11.15-91.el6_9
Red Hat:enterprise_linux:6::client	389-ds-base-devel	before 0:1.2.11.15-91.el6_9	0:1.2.11.15-91.el6_9
Red Hat:enterprise_linux:6::client	389-ds-base-libs	before 0:1.2.11.15-91.el6_9	0:1.2.11.15-91.el6_9
Red Hat:enterprise_linux:7::client	389-ds-base	before 0:1.3.5.10-20.el7_3	0:1.3.5.10-20.el7_3
Red Hat:enterprise_linux:7::client	389-ds-base-debuginfo	before 0:1.3.5.10-20.el7_3	0:1.3.5.10-20.el7_3
Red Hat:enterprise_linux:7::client	389-ds-base-devel	before 0:1.3.5.10-20.el7_3	0:1.3.5.10-20.el7_3
Red Hat:enterprise_linux:7::client	389-ds-base-libs	before 0:1.3.5.10-20.el7_3	0:1.3.5.10-20.el7_3
Red Hat:enterprise_linux:7::client	389-ds-base-snmp	before 0:1.3.5.10-20.el7_3	0:1.3.5.10-20.el7_3

Same product

fedoraproject: all records

Other highest-scoring records for the same primary product.

CVE-2017-7551389-ds-base version before 1.3.5.19 and 1.3.6.7 are vulnerable to password brute-force attacks during account lockout due to different retur
39Monitor
CVE-2017-15135It 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
33Monitor
CVE-2019-3883In 389-ds-base up to version 1.4.1.2, requests are handled by workers threads.
32Monitor
CVE-2018-14648A flaw was found in 389 Directory Server.
32Monitor
CVE-2018-14638A flaw was found in 389-ds-base before version 1.3.8.4-13.
31Monitor
CVE-2018-14624A vulnerability was discovered in 389-ds-base through versions 1.3.7.10, 1.3.8.8 and 1.4.0.16.
31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
debian:389-ds-base	1.3.5.17-1 · Debian:12	Package registry (OSV)
red hat:389-ds-base	0:1.2.11.15-91.el6_9 · Red Hat:enterprise_linux:6::client	Package registry (OSV)
red hat:389-ds-base-debuginfo	0:1.2.11.15-91.el6_9 · Red Hat:enterprise_linux:6::client	Package registry (OSV)
red hat:389-ds-base-devel	0:1.2.11.15-91.el6_9 · Red Hat:enterprise_linux:6::client	Package registry (OSV)
red hat:389-ds-base-libs	0:1.2.11.15-91.el6_9 · Red Hat:enterprise_linux:6::client	Package registry (OSV)
red hat:389-ds-base-snmp	0:1.3.5.10-20.el7_3 · Red Hat:enterprise_linux:7::client	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
A user must open a link or visit a page.
No special conditions are required; it is repeatable.

If successful

Confidentiality: none
Integrity: none
Availability: high · the service can be disrupted

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: Required
Scope: Unchanged
Confidentiality impact: None
Integrity impact: None
Availability impact: High

Weakness class (CWE)

CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

—

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

Fix✗ → ✓Sep 28, 2026, 10:45 PM UTC

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records