Rich Megginson

**Name of the Vulnerable Software and Affected Versions** 389 Directory Server versions prior to 1.2.10 **Description** The issue arises from the improper handling of access control instructions (ACIs) that utilize certificate groups by the acllas handle group entry function. This allows remote authenticated LDAP users with a certificate group to cause a denial of service, characterized by an infinite loop and excessive CPU consumption, by binding to the server. **Recommendations** For versions prior to 1.2.10, update to version 1.2.10 or later to resolve the issue. As a temporary workaround, consider restricting access to the acllas handle group entry function in the servers/plugins/acl/acllas.c file until a patch is applied.

**Name of the Vulnerable Software and Affected Versions** Fedora Directory Server version 1.0 **Description** The issue is related to multiple memory leaks in the LDAP component. Remote attackers can cause a denial of service by consuming memory via invalid BER packets that trigger an error. This error might prevent memory from being freed if it was allocated during the ber scanf call. **Recommendations** For Fedora Directory Server version 1.0, at the moment, there is no information about a newer version that contains a fix for this vulnerability.

**Name of the Vulnerable Software and Affected Versions** Fedora Directory Server version 1.0 **Description** The issue allows remote attackers to cause a denial of service, consuming CPU and memory, via a ModDN operation with a DN that contains a large number of comma characters. This results in a large amount of recursion. **Recommendations** For Fedora Directory Server version 1.0, consider restricting the use of the dn2ancestor function in the LDAP component to minimize the risk of exploitation. Avoid using the ModDN operation with DNs containing a large number of comma characters until the issue is resolved.