Vulnerability Name:

CVE-2018-20170

Assigned:2018-12-17
Published:2018-12-17
Updated:2019-02-06
Summary:** DISPUTED ** OpenStack Keystone through 14.0.1 has a user enumeration vulnerability because invalid usernames have much faster responses than valid ones for a POST /v3/auth/tokens request.
Note: the vendor's position is that this is a hardening opportunity, and not necessarily an issue that should have an OpenStack Security Advisory.
CVSS v3 Severity:5.3 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
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): Low
Integrity (I): None
Availibility (A): None
5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
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): Low
Integrity (I): None
Availibility (A): None
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
Vulnerability Type:CWE-200
References:Source: MITRE
Type: CNA
CVE-2018-20170

Source: MISC
Type: Exploit, Issue Tracking, Third Party Advisory
https://bugs.launchpad.net/keystone/+bug/1795800

Vulnerable Configuration:Configuration 1:
  • cpe:/a:openstack:keystone:*:*:*:*:*:*:*:* (Version <= 14.0.1)

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.disco:def:2018201700000000
    V
    		CVE-2018-20170 on Ubuntu 19.04 (disco) - low.
    2018-12-17
    oval:com.ubuntu.bionic:def:201820170000
    V
    		CVE-2018-20170 on Ubuntu 18.04 LTS (bionic) - low.
    2018-12-17
    oval:com.ubuntu.cosmic:def:2018201700000000
    V
    		CVE-2018-20170 on Ubuntu 18.10 (cosmic) - low.
    2018-12-17
    oval:com.ubuntu.cosmic:def:201820170000
    V
    		CVE-2018-20170 on Ubuntu 18.10 (cosmic) - low.
    2018-12-17
    oval:com.ubuntu.bionic:def:2018201700000000
    V
    		CVE-2018-20170 on Ubuntu 18.04 LTS (bionic) - low.
    2018-12-17
    oval:com.ubuntu.trusty:def:201820170000
    V
    		CVE-2018-20170 on Ubuntu 14.04 LTS (trusty) - low.
    2018-12-17
    oval:com.ubuntu.xenial:def:2018201700000000
    V
    		CVE-2018-20170 on Ubuntu 16.04 LTS (xenial) - low.
    2018-12-17
    oval:com.ubuntu.xenial:def:201820170000
    V
    		CVE-2018-20170 on Ubuntu 16.04 LTS (xenial) - low.
    2018-12-17
    BACK
    openstack keystone *