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Solution
No solution given by the vendor.
Workaround
Disable the deref plugin (most effective): dsconf <instance> plugin deref disable; systemctl restart dirsrv@<instance>. Disable anonymous access (nsslapd-allow-anonymous-access=off) to raise the bar from pre-auth to authenticated exploitation. Configure memory limits as defense-in-depth: set nsslapd-maxbersize and nsslapd-conntablesize, and deploy in a cgroup with memory limits.
Tue, 09 Jun 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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Tue, 09 Jun 2026 13:30:00 +0000
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| Description | A flaw was found in 389 Directory Server. The dereference control plugin does not check for allocation failure before using a BER structure, allowing an unauthenticated remote attacker to crash the LDAP server when the system is under memory pressure. | |
| Title | 389-ds-base: 389-ds-base: null pointer dereference in deref control plugin ber parser | |
| First Time appeared |
Redhat
Redhat directory Server Redhat enterprise Linux |
|
| Weaknesses | CWE-476 | |
| CPEs | cpe:/a:redhat:directory_server:11 cpe:/a:redhat:directory_server:12 cpe:/a:redhat:directory_server:13 cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
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| Vendors & Products |
Redhat
Redhat directory Server Redhat enterprise Linux |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-06-09T15:12:38.533Z
Reserved: 2026-06-09T12:57:59.740Z
Link: CVE-2026-11788
Updated: 2026-06-09T15:11:32.838Z
Status : Awaiting Analysis
Published: 2026-06-09T14:16:36.940
Modified: 2026-06-09T14:42:21.530
Link: CVE-2026-11788
No data.
OpenCVE Enrichment
Updated: 2026-06-09T15:00:07Z