Vulnerability Name:

CVE-2019-1697 (CCN-160433)

Assigned:2018-12-06
Published:2019-05-01
Updated:2019-05-07
Summary:A vulnerability in the implementation of the Lightweight Directory Access Protocol (LDAP) feature in Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerabilities are due to the improper parsing of LDAP packets sent to an affected device. An attacker could exploit these vulnerabilities by sending a crafted LDAP packet, using Basic Encoding Rules (BER), to be processed by an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
6.8 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H)
5.9 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:7.8 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
5.4 Medium (CCN CVSS v2 Vector: AV:N/AC:H/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): High
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-20
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2019-1697

Source: BID
Type: UNKNOWN
108182

Source: XF
Type: UNKNOWN
cisco-cve20191697-dos(160433)

Source: CCN
Type: Cisco Security Advisory cisco-sa-20190501-asa-ftds-ldapdos
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Lightweight Directory Access Protocol Denial of Service Vulnerability

Source: CISCO
Type: Vendor Advisory
20190501 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Lightweight Directory Access Protocol Denial of Service Vulnerability

Vulnerable Configuration:Configuration 1:
  • cpe:/a:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:* (Version < 9.6.4.25)
  • OR cpe:/a:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:* (Version >= 9.7 and < 9.8.4)
  • OR cpe:/a:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:* (Version >= 9.9 and < 9.9.2.50)
  • OR cpe:/a:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:* (Version >= 9.10 and < 9.10.1.17)
  • AND
  • cpe:/h:cisco:asa-5505:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:asa_5510:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:asa_5512-x:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:asa_5515-x:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:asa-5520:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:asa_5525-x:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:asa-5540:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:asa_5545-x:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:asa_5550:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:asa-5555-x:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:asa_5580:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:asa_5585-x:-:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* (Version < 6.2.3.12)
  • OR cpe:/a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* (Version >= 6.3.0 and < 6.3.0.3)

    • Configuration CCN 1:
  • cpe:/a:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_threat_defense_software:6.0.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    cisco adaptive security appliance software *
    cisco adaptive security appliance software *
    cisco adaptive security appliance software *
    cisco adaptive security appliance software *
    cisco asa-5505 -
    cisco asa 5510 -
    cisco asa 5512-x -
    cisco asa 5515-x -
    cisco asa-5520 -
    cisco asa 5525-x -
    cisco asa-5540 -
    cisco asa 5545-x -
    cisco asa 5550 -
    cisco asa-5555-x -
    cisco asa 5580 -
    cisco asa 5585-x -
    cisco firepower threat defense *
    cisco firepower threat defense *
    cisco adaptive security appliance software *
    cisco firepower threat defense software 6.0.0