Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Fedoraproject | 389 Directory Server | <= 1.4.1.2 |
| Debian | Debian Linux | 8.0 |
| Redhat | Enterprise Linux | 6.0 |
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2019:1896Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3401Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3883Issue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/05/msg00008.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/04/msg00026.html
- https://pagure.io/389-ds-base/issue/50329Issue TrackingThird Party Advisory
- https://pagure.io/389-ds-base/pull-request/50331Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:1896Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3401Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3883Issue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/05/msg00008.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/04/msg00026.html
- https://pagure.io/389-ds-base/issue/50329Issue TrackingThird Party Advisory
- https://pagure.io/389-ds-base/pull-request/50331Third Party Advisory
FAQ
What is CVE-2019-3883?
CVE-2019-3883 is a vulnerability with a CVSS score of 7.5 (HIGH). 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-...
How severe is CVE-2019-3883?
CVE-2019-3883 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-3883?
Check the references section above for vendor advisories and patch information. Affected products include: Fedoraproject 389 Directory Server, Debian Debian Linux, Redhat Enterprise Linux.