Vulnerability Name:

CVE-2017-16634 (CCN-134677)

Assigned:2017-11-07
Published:2017-11-07
Updated:2017-11-28
Summary:In Joomla! before 3.8.2, a bug allowed third parties to bypass a user's 2-factor authentication method.
CVSS v3 Severity:9.8 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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): High
Integrity (I): High
Availibility (A): High
5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/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): Low
Availibility (A): None
CVSS v2 Severity:7.5 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-287
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2017-16634

Source: BID
Type: Third Party Advisory, VDB Entry
101701

Source: CCN
Type: BID-101701
Joomla! CVE-2017-16634 Security Bypass Vulnerability

Source: SECTRACK
Type: Third Party Advisory, VDB Entry
1039757

Source: CCN
Type: Joomla Security Announcements: 713-20171102
Core - 2-factor-authentication bypass

Source: CONFIRM
Type: Patch, Vendor Advisory
https://developer.joomla.org/security-centre/713-20171102-core-2-factor-authentication-bypass

Source: XF
Type: UNKNOWN
joomla-cve201716634-sec-bypass(134677)

Vulnerable Configuration:Configuration 1:
  • cpe:/a:joomla:joomla!:*:*:*:*:*:*:*:* (Version >= 3.2.0 and <= 3.8.1)

    • Configuration CCN 1:
  • cpe:/a:joomla:joomla!:3.8.1:-:*:*:*:*:*:*
  • OR cpe:/a:joomla:joomla!:3.2.0:-:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    joomla joomla! *
    joomla joomla! 3.8.1
    joomla joomla! 3.2.0