The LDAP server in the AD domain controller in Samba 4.x before 4.1.22 does not check return values to ensure successful ASN.1 memory allocation, which allows remote attackers to cause a denial of service (memory consumption and daemon crash) via crafted packets.
| Software | From | Fixed in |
|---|---|---|
| samba / samba | 4.0.0 | 4.1.22 |
| canonical / ubuntu_linux | 15.10 | 15.10.x |
| canonical / ubuntu_linux | 15.04 | 15.04.x |
| canonical / ubuntu_linux | 14.04 | 14.04.x |
| canonical / ubuntu_linux | 12.04 | 12.04.x |
| debian / debian_linux | 8.0 | 8.0.x |
| debian / debian_linux | 7.0 | 7.0.x |