OpenLDAP denial-of-service flaw in ASN.1 decoder

liblber/io.c in OpenLDAP 2.2.4 to 2.4.10 allows remote attackers to cause a denial of service (program termination) via crafted ASN.1 BER datagrams that trigger an assertion error.

OpenLDAP before 2.3.29 allows remote attackers to cause a denial of service (daemon crash) via LDAP BIND requests with long authcid names, which triggers an assertion failure.

OpenLDAP: Doesn't properly handle NULL character in subject Common Name

libraries/libldap/tls_o.c in OpenLDAP 2.2 and 2.4, and possibly other versions, when OpenSSL is used, does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

Buffer overflow in the krbv4_ldap_auth function in servers/slapd/kerberos.c in OpenLDAP 2.4.3 and earlier, when OpenLDAP is compiled with the --enable-kbind (Kerberos KBIND) option, allows remote attackers to execute arbitrary code via an LDAP bind request using the LDAP_AUTH_KRBV41 authentication method and long credential data.

openldap slapd DoS via objectClasses attribute

OpenLDAP before 2.3.39 allows remote attackers to cause a denial of service (slapd crash) via an LDAP request with a malformed objectClasses attribute. NOTE: this has been reported as a double free, but the reports are inconsistent.

openldap slapd pcache overlay DoS via non-null teminated string

slapo-pcache (overlays/pcache.c) in slapd in OpenLDAP before 2.3.39, when running as a proxy-caching server, allocates memory using a malloc variant instead of calloc, which prevents an array from being initialized properly and might allow attackers to cause a denial of service (segmentation fault) via unknown vectors that prevent the array from being null terminated.

openldap: slapd crash on NOOP control operation on entry in bdb storage

The BDB backend for slapd in OpenLDAP before 2.3.36 allows remote authenticated users to cause a denial of service (crash) via a potentially-successful modify operation with the NOOP control set to critical, possibly due to a double free vulnerability.

openldap: slapd crash on modrdn operation with NOOP control on entry in bdb storage

slapd/back-bdb/modrdn.c in the BDB backend for slapd in OpenLDAP 2.3.39 allows remote authenticated users to cause a denial of service (daemon crash) via a modrdn operation with a NOOP (LDAP_X_NO_OPERATION) control, a related issue to CVE-2007-6698.

ldbm_back_exop_passwd in the back-ldbm backend in passwd.c for OpenLDAP 2.1.12 and earlier, when the slap_passwd_parse function does not return LDAP_SUCCESS, attempts to free an uninitialized pointer, which allows remote attackers to cause a denial of service (segmentation fault).

OpenLDAP 1.2.11 and earlier improperly installs the ud binary with group write permissions, which could allow any user in that group to replace the binary with a Trojan horse.

security flaw

slapd in OpenLDAP 1.x before 1.2.12, and 2.x before 2.0.8, allows remote attackers to cause a denial of service (crash) via an invalid Basic Encoding Rules (BER) length field.

security flaw

slapd in OpenLDAP 2.0 through 2.0.19 allows local users, and anonymous users before 2.0.8, to conduct a "replace" action on access controls without any values, which causes OpenLDAP to delete non-mandatory attributes that would otherwise be protected by ACLs.

security flaw

Multiple buffer overflows in OpenLDAP2 (OpenLDAP 2) 2.2.0 and earlier allow remote attackers to execute arbitrary code via (1) long -t or -r parameters to slurpd, (2) a malicious ldapfilter.conf file that is not properly handled by getfilter functions, (3) a malicious ldaptemplates.conf that causes an overflow in libldap, (4) a certain access control list that causes an overflow in slapd, or (5) a long generated filename for logging rejected replication requests.

security flaw

OpenLDAP2 (OpenLDAP 2) 2.2.0 and earlier allows remote or local attackers to execute arbitrary code when libldap reads the .ldaprc file within applications that are running with extra privileges.

security flaw

slapd in OpenLDAP2 (OpenLDAP 2) 2.2.0 and earlier allows local users to overwrite arbitrary files via a race condition during the creation of a log file for rejected replication requests.

security flaw

Linux OpenLDAP server allows local users to modify arbitrary files via a symlink attack.

security flaw

OpenLDAP 1.0 through 2.1.19, as used in Apple Mac OS 10.3.4 and 10.3.5 and possibly other operating systems, may allow certain authentication schemes to use hashed (crypt) passwords in the userPassword attribute as if they were plaintext passwords, which allows remote attackers to re-use hashed passwords without decrypting them.

Memory leak in the back-bdb backend for OpenLDAP 2.1.12 and earlier allows remote attackers to cause a denial of service (memory consumption).

security flaw

pam_ldap and nss_ldap, when used with OpenLDAP and connecting to a slave using TLS, does not use TLS for the subsequent connection if the client is referred to a master, which may cause a password to be sent in cleartext and allows remote attackers to sniff the password.

Untrusted search path vulnerability in OpenLDAP before 2.2.28-r3 on Gentoo Linux allows local users in the portage group to gain privileges via a malicious shared object in the Portage temporary build directory, which is part of the RUNPATH.