CVE-2026-86344

A flaw in 389-ds-base allows an unauthenticated remote attacker to perform a denial of service (DoS) attack. By sending a complete LDAP operation followed by the first bytes of an incomplete LDAPMessage on a single connection, the attacker can force the server to hand that connection to a second ...

CVE-2026-86344 389-ds-base: 389-ds-base: unauthenticated worker-thread-pool exhaustion via completed-operation-then-incomplete-pdu connection requeue

A flaw was found in 389-ds-base. An unauthenticated remote attacker can send a complete LDAP operation followed by the first bytes of an incomplete LDAPMessage on the same connection, causing the server to hand that connection to a second worker thread before the first worker's result is flushed...

PT-2026-104053

Name of the Vulnerable Software and Affected Versions 389-ds-base affected versions not specified Description An unauthenticated remote attacker can cause a denial of service by sending a complete LDAP operation followed by the initial bytes of an incomplete LDAPMessage on the same connection. Th...

SUSE CVE-2019-3883

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...

EulerOS 2.0 SP2 : 389-ds-base (EulerOS-SA-2019-2369)

According to the versions of the 389-ds-base packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - 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...

389-ds-base: DoS via hanging secured connections

It was found that encrypted connections did not honor the 'ioblocktimeout' parameter to end blocking requests. As a result, an unauthenticated attacker could repeatedly start a sufficient number of encrypted connections to block all workers, resulting in a denial of service...

389-ds-base: DoS via hanging secured connections

It was found that encrypted connections did not honor the 'ioblocktimeout' parameter to end blocking requests. As a result, an unauthenticated attacker could repeatedly start a sufficient number of encrypted connections to block all workers, resulting in a denial of service...

UBUNTU-CVE-2019-3883

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...

PT-2019-16752 · Red Hat +4 · 389-Ds-Base +5

Name of the Vulnerable Software and Affected Versions: 389-ds-base versions 1.4.1.2 and earlier Description: The issue allows an unauthenticated attacker to create hanging LDAP requests, potentially hanging all worker threads and resulting in a Denial of Service. This occurs because connections...