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Sid 1-45568

Message

SERVER-SAMBA Samba LDAP Server libldb denial of service attempt

Summary

This event is generated when a denial of service attempt is detected in Samba LDAP server.

Impact

Detection of a Denial of Service Attack

CVE-2015-3223:

CVSS base score 5.3

CVSS impact score 1.4

CVSS exploitability score 3.9

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Detailed information

CVE-2015-3223: The ldbwildcardcompare function in ldb_match.c in ldb before 1.1.24, as used in the AD LDAP server in Samba 4.x before 4.1.22, 4.2.x before 4.2.7, and 4.3.x before 4.3.3, mishandles certain zero values, which allows remote attackers to cause a denial of service (infinite loop) via crafted packets.

Affected systems

  • samba samba 4.0.0
  • samba samba 4.0.1
  • samba samba 4.0.2
  • samba samba 4.0.3
  • samba samba 4.0.4
  • samba samba 4.0.5
  • samba samba 4.0.6
  • samba samba 4.0.7
  • samba samba 4.0.8
  • samba samba 4.0.9
  • samba samba 4.0.10
  • samba samba 4.0.11
  • samba samba 4.0.12
  • samba samba 4.0.13
  • samba samba 4.0.14
  • samba samba 4.0.15
  • samba samba 4.0.16
  • samba samba 4.0.17
  • samba samba 4.0.18
  • samba samba 4.0.19
  • samba samba 4.0.20
  • samba samba 4.0.21
  • samba samba 4.0.22
  • samba samba 4.0.23
  • samba samba 4.0.24
  • samba samba 4.1.0
  • samba samba 4.1.1
  • samba samba 4.1.2
  • samba samba 4.1.3
  • samba samba 4.1.4
  • samba samba 4.1.5
  • samba samba 4.1.6
  • samba samba 4.1.7
  • samba samba 4.1.8
  • samba samba 4.1.9
  • samba samba 4.1.10
  • samba samba 4.1.11
  • samba samba 4.1.12
  • samba samba 4.1.13
  • samba samba 4.1.14
  • samba samba 4.1.15
  • samba samba 4.1.16
  • samba samba 4.1.17
  • samba samba 4.1.18
  • samba samba 4.1.19
  • samba samba 4.1.20
  • samba samba 4.1.21
  • samba samba 4.2.0
  • samba samba 4.2.1
  • samba samba 4.2.2
  • samba samba 4.2.3
  • samba samba 4.2.4
  • samba samba 4.2.5
  • samba samba 4.2.6
  • samba samba 4.3.0
  • samba samba 4.3.1
  • samba samba 4.3.2

Ease of attack

CVE-2015-3223:

Access Vector

Access Complexity

Authentication

False positives

False negatives

Corrective action

Contributors

  • Cisco's Talos Intelligence Group

Additional References