Description (CNA)
A flaw was found in 389 Directory Server in the __aclp__normalize_acltxt() function of aclparse.c. A malformed ACI (Access Control Instruction) string can trigger heap-buffer-overflow writes and reads during ACI parsing. The function fails to validate that the ACI keyword has sufficient length after whitespace stripping, leading to a 1-byte out-of-bounds write and subsequent out-of-bounds reads. An authenticated user with write access to the aci attribute could send a crafted ACI value to silently corrupt heap memory in the directory server process.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Red Hat / Red Hat Directory Server 11 | affected |
| Red Hat / Red Hat Directory Server 12 | affected |
| Red Hat / Red Hat Directory Server 13 | affected |
| Red Hat / Red Hat Enterprise Linux 10 | affected |
| Red Hat / Red Hat Enterprise Linux 6 | unknown |
| Red Hat / Red Hat Enterprise Linux 7 | affected |
| Red Hat / Red Hat Enterprise Linux 8 | affected |
| Red Hat / Red Hat Enterprise Linux 9 | affected |
CWE
CWE-787
References
- https://access.redhat.com/security/cve/CVE-2026-12528
- https://bugzilla.redhat.com/show_bug.cgi?id=2489835
- https://github.com/389ds/389-ds-base/pull/7542
ADP enrichment
No English description supplied.
No references supplied.