Vulnerability Name:

CVE-2019-1796 (CCN-159580)

Assigned:2018-12-06
Published:2019-04-17
Updated:2021-04-15
Summary:A vulnerability in the handling of Inter-Access Point Protocol (IAPP) messages by Cisco Wireless LAN Controller (WLC) Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition. The vulnerability exist because the software improperly validates input on fields within IAPP messages. An attacker could exploit the vulnerability by sending malicious IAPP messages to an affected device. A successful exploit could allow the attacker to cause the Cisco WLC Software to reload, resulting in a DoS condition. Software versions prior to 8.2.170.0, 8.5.150.0, and 8.8.100.0 are affected.
CVSS v3 Severity:6.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
5.7 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/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): Adjacent
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
7.4 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H)
6.4 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
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:6.1 Medium (CVSS v2 Vector: AV:A/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
6.1 Medium (CCN CVSS v2 Vector: AV:A/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-20
CWE-399
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2019-1796

Source: BID
Type: Third Party Advisory, VDB Entry
108008

Source: XF
Type: UNKNOWN
cisco-cve20191796-dos(159580)

Source: CCN
Type: Cisco Security Advisory cisco-sa-20190417-wlc-iapp
Cisco Wireless LAN Controller Software IAPP Message Handling Denial of Service Vulnerabilities

Source: CISCO
Type: Vendor Advisory
20190417 Cisco Wireless LAN Controller Software IAPP Message Handling Denial of Service Vulnerabilities

Vulnerable Configuration:Configuration 1:
  • cpe:/a:cisco:wireless_lan_controller:*:*:*:*:*:*:*:* (Version < 8.2.170.0)
  • OR cpe:/o:cisco:wireless_lan_controller_software:*:*:*:*:*:*:*:* (Version >= 8.3.143.0 and < 8.5.150.0)
  • OR cpe:/o:cisco:wireless_lan_controller_software:*:*:*:*:*:*:*:* (Version >= 8.7.106.0 and < 8.8.100.0)

    • * Denotes that component is vulnerable
    BACK
    cisco wireless lan controller *
    cisco wireless lan controller software *
    cisco wireless lan controller software *