CVE-2019-3883 Information

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

https://access.redhat.com/errata/RHSA-2019:1896 https://access.redhat.com/errata/RHSA-2019:3401 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3883 https://lists.debian.org/debian-lts-announce/2019/05/msg00008.html https://pagure.io/389-ds-base/issue/50329 https://pagure.io/389-ds-base/pull-request/50331

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5