5.4

CVE-2026-12528

389-ds-base: 389-ds-base: heap-buffer-overflows in __aclp__normalize_acltxt()

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Redhat ≫ Directory Server Version11.0
Redhat ≫ Directory Server Version12.0
Redhat ≫ Directory Server Version13.0
Redhat ≫ Enterprise Linux Version7.0
Redhat ≫ Enterprise Linux Version8.0
Redhat ≫ Enterprise Linux Version9.0
Redhat ≫ Enterprise Linux Version10.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.23% 0.132
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.4 2.8 2.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
secalert@redhat.com 5.4 2.8 2.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

https://access.redhat.com/security/cve/CVE-2026-12528
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2489835
Vendor Advisory
Issue Tracking
https://github.com/389ds/389-ds-base/pull/7542
Patch