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Noroxi
CVE-2018-14638· NVD / CVE Program· CNA redhat

A flaw was found in 389-ds-base before version 1.3.8.4-13.

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 2.6% (FIRST EPSS); higher than 85.3% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: 389-ds-base (Debian:12) 1.4.0.18-1; 389-ds (openSUSE:Tumbleweed) 2.0.10~git0.21dd2802c-1.1; 389-ds-base (Red Hat:enterprise_linux:7::client) 0:1.3.7.5-28.el7_5.

Low priority for now. Upgrade to 389-ds-base (Debian:12) 1.4.0.18-1; 389-ds (openSUSE:Tumbleweed) 2.0.10~git0.21dd2802c-1.1; 389-ds-base (Red Hat:enterprise_linux:7::client) 0:1.3.7.5-28.el7_5 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A flaw was found in 389-ds-base before version 1.3.8.4-13. The process ns-slapd crashes in delete_passwdPolicy function when persistent search connections are terminated unexpectedly leading to remote denial of service.

HighCVSS 7.5 · v3.0—No exploit Fix available
Published
Sep 14, 2018
Updated
Jun 16, 2026
EPSS
2.6% · 85th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 2.6%

CNA vs NVD score

NVD
7.5
CNA · redhat
7.5
agree

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

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2018-14638

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
fedoraproject389 directory server
redhatenterprise linux aus
redhatenterprise linux desktop
redhatenterprise linux server
redhatenterprise linux server eus
redhatenterprise linux server tus
redhatenterprise 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 serverbefore 1.3.8.4
  • redhat enterprise linux aus7.6
  • redhat enterprise linux desktop7.0
  • redhat enterprise linux server7.0
  • redhat enterprise linux server eus7.5
  • redhat enterprise linux server eus7.6
  • redhat enterprise linux server tus7.6
  • 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.

  • Fedora Project 389-ds-base

    • 1.3.8.4-13affected

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12389-ds-basebefore 1.4.0.18-11.4.0.18-1
openSUSE:Tumbleweed389-dsbefore 2.0.10~git0.21dd2802c-1.12.0.10~git0.21dd2802c-1.1
Red Hat:enterprise_linux:7::client389-ds-basebefore 0:1.3.7.5-28.el7_50:1.3.7.5-28.el7_5
Red Hat:enterprise_linux:7::client389-ds-base-debuginfobefore 0:1.3.7.5-28.el7_50:1.3.7.5-28.el7_5
Red Hat:enterprise_linux:7::client389-ds-base-develbefore 0:1.3.7.5-28.el7_50:1.3.7.5-28.el7_5
Red Hat:enterprise_linux:7::client389-ds-base-libsbefore 0:1.3.7.5-28.el7_50:1.3.7.5-28.el7_5
Red Hat:enterprise_linux:7::client389-ds-base-snmpbefore 0:1.3.7.5-28.el7_50:1.3.7.5-28.el7_5
SUSE:Linux Enterprise Module for Server Applications 15389-dsbefore 1.4.0.26~git0.8a2d3de6f-4.14.11.4.0.26~git0.8a2d3de6f-4.14.1

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-2018-14624A vulnerability was discovered in 389-ds-base through versions 1.3.7.10, 1.3.8.8 and 1.4.0.16.
    31Monitor
  • CVE-2018-1089389-ds-base before versions 1.4.0.9, 1.3.8.1, 1.3.6.15 did not properly handle long search filters with characters needing escapes, possibly
    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 / packageFixed versionSource
debian:389-ds-base1.4.0.18-1 · Debian:12Package registry (OSV)
opensuse:389-ds2.0.10~git0.21dd2802c-1.1 · openSUSE:TumbleweedPackage registry (OSV)
red hat:389-ds-base0:1.3.7.5-28.el7_5 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:389-ds-base-debuginfo0:1.3.7.5-28.el7_5 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:389-ds-base-devel0:1.3.7.5-28.el7_5 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:389-ds-base-libs0:1.3.7.5-28.el7_5 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:389-ds-base-snmp0:1.3.7.5-28.el7_5 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
suse:389-ds1.4.0.26~git0.8a2d3de6f-4.14.1 · SUSE:Linux Enterprise Module for Server Applications 15Package 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.
  • No user action is required.
  • 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
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-400 · Uncontrolled Resource Consumption

CVSS vector

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

nvd-primary

Root cause

Code that parses nested structures sets no depth or size limit. A small input can turn into a disproportionate processing load.

The bug in code

The whole CWE-400 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
function expand(node) {  return node.children.map(expand);}

Fixed

ts
const MAX_DEPTH = 32;function expand(node, depth = 0) {  if (depth > MAX_DEPTH) throw new Error("too deep");  return node.children.map((c) => expand(c, depth + 1));}

Attack context

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

Change log

  1. Fix✗ → ✓

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

References

Show all references (2 more)

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

All records