OpenLDAP 2.4.22 allows remote attackers to cause a denial of service (crash) via a modrdn call with a zero-length RDN destination string, which is not properly handled by the smr_normalize function and triggers a NULL pointer dereference in the IA5StringNormalize function in schema_init.c, as demonstrated using the Codenomicon LDAPv3 test suite.
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10735
http://lists.apple.com/archives/security-announce/2010//Nov/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2010-08/msg00001.html
http://secunia.com/advisories/40639
http://secunia.com/advisories/40687
http://secunia.com/advisories/42787
http://security.gentoo.org/glsa/glsa-201406-36.xml
http://support.apple.com/kb/HT4435
http://www.redhat.com/support/errata/RHSA-2010-0542.html
http://www.securitytracker.com/id?1024221
http://www.vmware.com/security/advisories/VMSA-2011-0001.html
http://www.vupen.com/english/advisories/2010/1849
Published: 2010-07-28
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
Severity: Medium