Description
When binding against a DN during authentication, the reply from 389-ds-base will be different whether the DN exists or not. This can be used by an unauthenticated attacker to check the existence of an entry in the LDAP database.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | 389-ds-base | 389-ds-base 2.0.3, 389-ds-base 1.4.4.13, 389-ds-base 1.4.3.19 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 13 | 389-ds-base | 1.4.4.10-1 | — |
| Debian 12 | 389-ds-base | 1.4.4.10-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | 389-ds-base | 1.4.3.6-2ubuntu0.1~esm1 | USN-5231-1 |
| Ubuntu Pro 18.04 LTS | 389-ds-base | 1.3.7.10-1ubuntu1+esm1 | USN-5231-1 |
| Ubuntu Pro 16.04 LTS | 389-ds-base | 1.3.4.9-1ubuntu0.1~esm1 | USN-5231-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | 389-ds-base +5 | 1.4.3.8-7.module+el8.3.0+10310+6e88d919 | RHSA-2021:1086 |
| RHEL 7 | 389-ds-base +3 | 1.3.10.2-12.el7_9 | RHSA-2021:2323 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.2 EUS | 389-ds-base +5 | 1.4.2.4-13.module+el8.2.0+10648+abe88955 | RHSA-2021:1258 |
| Red Hat Directory Server 11 | 389-ds-base +6 | 1.4.2.12-5.module+el8dsrv+9896+eb95346c | RHSA-2021:1243, RHSA-2021:0599 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP2 | 389-ds | 1.4.3.19~git0.bef0b5bed-3.12.1 | SUSE-SU-2021:0724-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.2 | 389-ds | 1.4.3.19~git0.bef0b5bed-lp152.2.12.1 | openSUSE-SU-2021:0418-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | 389-ds-base +3 | 1.3.10.2-12.amzn2.0.1 | ALAS2-2021-1650 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | 389-ds-base +5 | 1.4.3.8-7.module+el8.3.0+20006+53cafd96 | ELSA-2021-1086 |
| Oracle Linux 7 | 389-ds-base +3 | 1.3.10.2-12.el7_9 | ELSA-2021-2323 |
Advisories 11
- RHSA-2021:2323 Red Hat Security Advisory: 389-ds-base security and bug fix update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2021:1243 Red Hat Security Advisory: redhat-ds:11 security and bug fix update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2021:1258 Red Hat Security Advisory: 389-ds:1.4 security and bug fix update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2021:1086 Red Hat Security Advisory: 389-ds:1.4 security and bug fix update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2021:0599 Red Hat Security Advisory: redhat-ds:11 security and bug fix update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- USN-5231-1 389-ds-base vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- SUSE-SU-2021:0724-1 Security update for 389-ds SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:0418-1 Security update for 389-ds SUSE / openSUSE Security Updates · May 7, 2025
- ALAS2-2021-1650 Moderate: 389-ds-base security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jun 22, 2021
- ELSA-2021-2323 Moderate: 389-ds-base security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jun 9, 2021
- ELSA-2021-1086 Moderate: 389-ds:1.4 security and bug fix update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Apr 9, 2021