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CVE-2026-15722

389-ds-base: 389-ds-base: pre-authentication stack buffer overflow in get_ruvelement_from_berval() via unbounded replica id parsing PUBLISHED

Description (CNA)

A stack buffer overflow flaw was found in 389 Directory Server (389-ds-base). The get_ruvelement_from_berval() function in repl5_ruv.c copies digit characters from a network-supplied RUV berval into a fixed 16-byte stack buffer without bounds checking. A remote unauthenticated attacker can crash the LDAP server by sending a crafted StartNSDS50ReplicationRequest extended operation containing a replica ID field with more than 16 digit characters. The overflow occurs during payload decoding, before any authorization check. Stack protectors limit impact to denial of service.

Affected (CNA)

Vendor / productVersions
Red Hat / Red Hat Directory Server 11.5 E4S for RHEL 8unaffected 8060020260908152739.0ca98e7e before *
Red Hat / Red Hat Directory Server 11.7 E4S for RHEL 8unaffected 8080020260806114250.f969626e before *
Red Hat / Red Hat Directory Server 11.9 for RHEL 8unaffected 8100020260803140625.37ed7c03 before *
Red Hat / Red Hat Directory Server 12.2 E4S for RHEL 9unaffected 9020020260730155601.1674d574 before *
Red Hat / Red Hat Directory Server 12.4 E4S for RHEL 9unaffected 9040020260810131422.1674d574 before *
Red Hat / Red Hat Enterprise Linux 10unaffected 0:3.2.0-9.el10_2 before *
Red Hat / Red Hat Enterprise Linux 10.0 Extended Update Supportunaffected 0:3.0.6-20.el10_0 before *
Red Hat / Red Hat Enterprise Linux 7 Extended Lifecycle Supportunaffected 0:1.3.11.1-14.el7_9 before *
Red Hat / Red Hat Enterprise Linux 8unaffected 8100020260806150504.25e700aa before *
Red Hat / Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Supportunaffected 8040020260803141511.96015a92 before *
Red Hat / Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-Onunaffected 8040020260803141511.96015a92 before *
Red Hat / Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Supportunaffected 8060020260806120442.824efc52 before *
Red Hat / Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-Onunaffected 8060020260806120442.824efc52 before *
Red Hat / Red Hat Enterprise Linux 8.8 Telecommunications Update Serviceunaffected 8080020260806114228.6dbb3803 before *
Red Hat / Red Hat Enterprise Linux 8.8 Update Services for SAP Solutionsunaffected 8080020260806114228.6dbb3803 before *
Red Hat / Red Hat Enterprise Linux 9unaffected 0:2.8.0-9.el9_8 before *
Red Hat / Red Hat Enterprise Linux 9.2 Update Services for SAP Solutionsunaffected 0:2.2.4-20.el9_2 before *
Red Hat / Red Hat Enterprise Linux 9.4 Update Services for SAP Solutionsunaffected 0:2.4.5-27.el9_4 before *
Red Hat / Red Hat Enterprise Linux 9.6 Extended Update Supportunaffected 0:2.6.1-23.el9_6 before *
Red Hat / Red Hat Directory Server 12affected
Red Hat / Red Hat Directory Server 13unaffected
Red Hat / Red Hat Enterprise Linux 6unknown

CWE

CWE-121

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.