client/mount.cifs.c in mount.cifs in smbfs in Samba 3.4.5 and earlier does not verify that the (1) device name and (2) mountpoint strings are composed of valid characters, which allows local users to cause a denial of service (mtab corruption) via a crafted string.
The smdb daemon (smbd/service.c) in Samba 3.0.1 through 3.0.22 allows remote attackers to cause a denial of service (memory consumption) via a large number of share connection requests.
The winbindd daemon in Samba 3.0.21 to 3.0.21c writes the machine trust account password in cleartext in log files, which allows local users to obtain the password and spoof the server in the domain.
Stack-based buffer overflow in the sendmailslot function in nmbd in Samba 3.0.0 through 3.0.27a, when the "domain logons" option is enabled, allows remote attackers to execute arbitrary code via a GETDC mailslot request composed of a long GETDC string following an offset username in a SAMLOGON logon request.
Stack-based buffer overflow in the replynetbiospacket function in nmbd/nmbdpackets.c in nmbd in Samba 3.0.0 through 3.0.26a, when operating as a WINS server, allows remote attackers to execute arbitrary code via crafted WINS Name Registration requests followed by a WINS Name Query request.
Stack-based buffer overflow in nmbd in Samba 3.0.0 through 3.0.26a, when configured as a Primary or Backup Domain controller, allows remote attackers to have an unknown impact via crafted GETDC mailslot requests, related to handling of GETDC logon server requests.
Multiple heap-based buffer overflows in the NDR parsing in smbd in Samba 3.0.0 through 3.0.25rc3 allow remote attackers to execute arbitrary code via crafted MS-RPC requests involving (1) DFSEnum (netdfsiodfsEnumInfod), (2) RFNPCNEX (smbionotifyoptiontypedata), (3) LsarAddPrivilegesToAccount (lsaioprivilegeset), (4) NetSetFileSecurity (secioacl), or (5) LsarLookupSids/LsarLookupSids2 (lsaiotransnames).
Format string vulnerability in the afsacl.so VFS module in Samba 3.0.6 through 3.0.23d allows context-dependent attackers to execute arbitrary code via format string specifiers in a filename on an AFS file system, which is not properly handled during Windows ACL mapping.
Buffer overflow in the nsswinbind.so.1 library in Samba 3.0.21 through 3.0.23d, as used in the winbindd daemon on Solaris, allows attackers to execute arbitrary code via the (1) gethostbyname and (2) getipnodebyname functions.
smbd in Samba 3.0.6 through 3.0.23d allows remote authenticated users to cause a denial of service (memory and CPU exhaustion) by renaming a file in a way that prevents a request from being removed from the deferred open queue, which triggers an infinite loop.
An integer overflow flaw was found in the way samba read an EA list provided by the client. A malicious client could send a specially crafted EA list that wraps perfectly on a 32-bit boundary, causing the server to loop and re-process the list. This can cause Denial of Service via memory exhaustion.
Reference:
https://bugzilla.samba.org/showbug.cgi?id=10010 (curently private)