Vulnerability Name:

CVE-2017-1000071 (CCN-130216)

Assigned:2017-04-06
Published:2017-04-06
Updated:2019-10-03
Summary:Jasig phpCAS version 1.3.4 is vulnerable to an authentication bypass in the validateCAS20 function when configured to authenticate against an old CAS server.
CVSS v3 Severity:8.1 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)
7.1 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/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): High
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:6.8 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
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-2017-1000071

Source: BID
Type: Third Party Advisory, VDB Entry
99609

Source: CCN
Type: BID-99609
phpCAS CVE-2017-1000071 Authentication Bypass Vulnerability

Source: XF
Type: UNKNOWN
jasig-cve20171000071-sec-bypass(130216)

Source: CCN
Type: Jasig GIT Repository
Authentication bypass in validateCAS20 #228

Source: CONFIRM
Type: Third Party Advisory
https://github.com/Jasig/phpCAS/blob/master/docs/ChangeLog

Source: CONFIRM
Type: Third Party Advisory
https://github.com/Jasig/phpCAS/issues/228

Vulnerable Configuration:Configuration 1:
  • cpe:/a:apereo:phpcas:1.3.4:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.xenial:def:201710000710000000
    V
    		CVE-2017-1000071 on Ubuntu 16.04 LTS (xenial) - low.
    2017-07-17
    oval:com.ubuntu.artful:def:20171000071000
    V
    		CVE-2017-1000071 on Ubuntu 17.10 (artful) - low.
    2017-07-17
    oval:com.ubuntu.xenial:def:20171000071000
    V
    		CVE-2017-1000071 on Ubuntu 16.04 LTS (xenial) - low.
    2017-07-17
    oval:com.ubuntu.disco:def:201710000710000000
    V
    		CVE-2017-1000071 on Ubuntu 19.04 (disco) - low.
    2017-07-17
    oval:com.ubuntu.bionic:def:20171000071000
    V
    		CVE-2017-1000071 on Ubuntu 18.04 LTS (bionic) - low.
    2017-07-17
    oval:com.ubuntu.cosmic:def:201710000710000000
    V
    		CVE-2017-1000071 on Ubuntu 18.10 (cosmic) - low.
    2017-07-17
    oval:com.ubuntu.cosmic:def:20171000071000
    V
    		CVE-2017-1000071 on Ubuntu 18.10 (cosmic) - low.
    2017-07-17
    oval:com.ubuntu.bionic:def:201710000710000000
    V
    		CVE-2017-1000071 on Ubuntu 18.04 LTS (bionic) - low.
    2017-07-17
    oval:com.ubuntu.trusty:def:20171000071000
    V
    		CVE-2017-1000071 on Ubuntu 14.04 LTS (trusty) - low.
    2017-07-17
    BACK
    apereo phpcas 1.3.4