Rapid7 Vulnerability & Exploit Database

Oracle Linux: CVE-2019-3883: ELSA-2019-1896: 389-ds-base security and bug fix update (MODERATE) (Multiple Advisories)

Free InsightVM Trial No Credit Card Necessary
2024 Attack Intel Report Latest research by Rapid7 Labs
Back to Search

Oracle Linux: CVE-2019-3883: ELSA-2019-1896: 389-ds-base security and bug fix update (MODERATE) (Multiple Advisories)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
04/12/2019
Created
07/23/2020
Added
07/21/2020
Modified
01/07/2025

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. 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.

Solution(s)

  • oracle-linux-upgrade-389-ds-base
  • oracle-linux-upgrade-389-ds-base-devel
  • oracle-linux-upgrade-389-ds-base-legacy-tools
  • oracle-linux-upgrade-389-ds-base-libs
  • oracle-linux-upgrade-389-ds-base-snmp
  • oracle-linux-upgrade-python3-lib389

References

insightVM

Advanced vulnerability management analytics and reporting.
Key Features
  • Lightweight Endpoint Agent
  • Live Dashboards
  • Real Risk Prioritization
  • IT-Integrated Remediation Projects
  • Cloud, Virtual, and Container Assessment
  • Integrated Threat Feeds
  • Easy-to-Use RESTful API
  • Automation-Assisted Patching
  • Automated Containment
Free InsightVM Trial View All Features

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;