Description
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.
CVSS 7.5EPSS 0.48900000000000005%Risque 0.78
Voir la source- Publication
- 2026-07-31 10:16:44
- Versions concernées
- unknown
- Type
- Logiciel critique
- Dernière modification
- 2026-08-07 17:44:03
- Vecteur
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Systèmes d’exploitation
- Linux