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Fencer Vulns
critical 9.8

CVE-2017-7551 json

389-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 retu…

published 2017-08-16 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-16559

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 72%
public exploits
0
none known

Summary

389-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 return codes returned on password attempts.

Patch / fix

  • 389-ds-base Debian 13, Debian 12 1.3.6.7-1

debian advisories DEBIAN-CVE-2017-7551

  • 389-ds-base RHEL 7 1.3.6.1-19.el7_4
  • 389-ds-base-libs RHEL 7 1.3.6.1-19.el7_4
  • 389-ds-base-snmp RHEL 7 1.3.6.1-19.el7_4

red hat advisories RHSA-2017:2569

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-7551 updated cvss 5.3

389-ds-base: Password brute-force possible for locked account due to different return codes

  • Red Hat Enterprise Linux 6 389-ds-base, 389-ds-base-libs
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Client Optional (v. 7) 389-ds-base 1.3.6.1-19.el7_4, 389-ds-base-libs 1.3.6.1-19.el7_4, 389-ds-base-snmp 1.3.6.1-19.el7_4 Red Hat Enterprise Linux ComputeNode Optional (v. 7) 389-ds-base 1.3.6.1-19.el7_4, 389-ds-base-libs 1.3.6.1-19.el7_4, 389-ds-base-snmp 1.3.6.1-19.el7_4 Red Hat Enterprise Linux Server (v. 7) 389-ds-base 1.3.6.1-19.el7_4, 389-ds-base-libs 1.3.6.1-19.el7_4 Red Hat Enterprise Linux Server Optional (v. 7) 389-ds-base 1.3.6.1-19.el7_4, 389-ds-base-libs 1.3.6.1-19.el7_4, 389-ds-base-snmp 1.3.6.1-19.el7_4 Red Hat Enterprise Linux Workstation (v. 7) 389-ds-base 1.3.6.1-19.el7_4, 389-ds-base-libs 1.3.6.1-19.el7_4 Red Hat Enterprise Linux Workstation Optional (v. 7) 389-ds-base-snmp 1.3.6.1-19.el7_4
    fixed: vendor fix RHSA-2017:2569

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.42% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • pagure.io https://pagure.io/389-ds-base/issue/49336 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • 389 Directory Server 389-ds-base

Classification

Weakness
  • CWE-209 Generation of Error Message Containing Sensitive Information
  • CWE-640 Weak Password Recovery Mechanism for Forgotten Password

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.