Description
In 389-ds-base up to version 1.4.1.2, requests are handled by workers threads. Each sockets will be waited by the worker for at most 'ioblocktimeout' seconds. However this timeout applies only for un-encrypted requests. Connections using SSL/TLS are not taking this timeout into account during reads, and may hang longer.An unauthenticated attacker could repeatedly create hanging LDAP requests to hang all the workers, resulting in a Denial of Service.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | 389-ds-base | affects up to 1.4.1.2 | — |
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 | 1.4.1.5-1 | — |
| Debian 12 | 389-ds-base | 1.4.1.5-1 | — |
| Debian 10 | 389-ds-base | 1.4.0.21-1+deb10u1 | DLA-3399-1 |
| Debian 8 | 389-ds-base | 1.3.3.5-4+deb8u6 | DLA-1779-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | 389-ds-base | No fix yet | — |
| Ubuntu 26.04 LTS | 389-ds-base | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | 389-ds-base | No fix yet | — |
| Ubuntu Pro 16.04 LTS | 389-ds-base | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | 389-ds-base +5 | 1.4.1.3-7.module+el8.1.0+4150+5b8c2c1f | RHSA-2019:3401 |
| RHEL 7 | 389-ds-base +3 | 1.3.8.4-25.1.el7_6 | RHSA-2019:1896 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | 389-ds | 1.4.0.26~git0.8a2d3de6f-4.14.1 | SUSE-SU-2019:2155-1 |
| SLES 15 | 389-ds | 1.4.0.26~git0.8a2d3de6f-4.14.1 | SUSE-SU-2019:2155-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | 389-ds-base +3 | 1.3.8.4-25.1.amzn2.0.1 | ALAS2-2019-1262 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | 389-ds-base +5 | 1.4.1.3-7.module+el8.1.0+5386+aef60ae7 | ELSA-2019-3401 |
| Oracle Linux 7 | 389-ds-base +3 | 1.3.8.4-25.1.el7_6 | ELSA-2019-1896 |
Advisories 8
- RHSA-2019:3401 Red Hat Security Advisory: 389-ds:1.4 security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2019:1896 Red Hat Security Advisory: 389-ds-base security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DLA-3399-1 389-ds-base - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1779-1 389-ds-base - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2019:2155-1 Security update for 389-ds SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2019-3401 Important: 389-ds:1.4 security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 14, 2019
- ALAS2-2019-1262 Moderate: 389-ds-base security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Aug 9, 2019
- ELSA-2019-1896 Moderate: 389-ds-base security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jul 30, 2019
References
- [debian-lts-announce] 20190506 [SECURITY] [DLA 1779-1] 389-ds-base security update mailing-list
- RHSA-2019:1896 vendor-advisory
- RHSA-2019:3401 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3883
- https://pagure.io/389-ds-base/issue/50329
- https://pagure.io/389-ds-base/pull-request/50331
- [debian-lts-announce] 20230424 [SECURITY] [DLA 3399-1] 389-ds-base security update mailing-list