Apereo: Security Vulnerabilities
Opencast before 8.1 stores passwords using the rather outdated and cryptographically insecure MD5 hash algorithm. Furthermore, the hashes are salted using the username instead of a random salt, causing hashes for users with the same username and password to collide which is problematic especially for popular users like the default `admin` user. This essentially means that for an attacker, it might be feasible to reconstruct a user's password given access to these hashes. Note that attackers needing access to the hashes means that they must gain access to the database in which these are stored first to be able to start cracking the passwords. The problem is addressed in Opencast 8.1 which now uses the modern and much stronger bcrypt password hashing algorithm for storing passwords. Note, that old hashes remain MD5 until the password is updated. For a list of users whose password hashes are stored using MD5, take a look at the `/user-utils/users/md5.json` REST endpoint.
CVSS Score
7.7
EPSS Score
0.002
Published
2020-01-30
A URL parameter injection vulnerability was found in the back-channel ticket validation step of the CAS protocol in Jasig Java CAS Client before 3.3.2, .NET CAS Client before 1.0.2, and phpCAS before 1.3.3 that allow remote attackers to inject arbitrary web script or HTML via the (1) service parameter to validation/AbstractUrlBasedTicketValidator.java or (2) pgtUrl parameter to validation/Cas20ServiceTicketValidator.java.
CVSS Score
9.8
EPSS Score
0.067
Published
2020-01-24
An Information Disclosure vulnerability exists in the Jasig Project php-pear-CAS 1.2.2 package in the /tmp directory. The Central Authentication Service client library archives the debug logging file in an insecure manner.
CVSS Score
5.5
EPSS Score
0.002
Published
2019-12-05
A Security Bypass vulnerability exists in the phpCAS 1.2.2 library from the jasig project due to the way proxying of services are managed.
CVSS Score
5.3
EPSS Score
0.002
Published
2019-12-05
Multiple classes used within Apereo CAS before release 6.1.0-RC5 makes use of apache commons-lang3 RandomStringUtils for token and ID generation which makes them predictable due to RandomStringUtils PRNG's algorithm not being cryptographically strong.
CVSS Score
8.1
EPSS Score
0.004
Published
2019-09-23
bw-calendar-engine version <= bw-calendar-engine-3.12.0 contains a XML External Entity (XXE) vulnerability in IscheduleClient XML Parser that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This attack appear to be exploitable via Man in the Middle or malicious server.
CVSS Score
9.0
EPSS Score
0.003
Published
2018-12-20
Apereo Bedework bw-webdav before 4.0.3 allows XXE attacks, as demonstrated by an invite-reply document that reads a local file, related to webdav/servlet/common/MethodBase.java and webdav/servlet/common/PostRequestPars.java.
CVSS Score
7.5
EPSS Score
0.003
Published
2018-12-10
XML external entity (XXE) vulnerability in java/org/jasig/cas/util/SamlUtils.java in Jasig CAS server before 3.4.12.1 and 3.5.x before 3.5.2.1, when Google Accounts Integration is enabled, allows remote unauthenticated users to bypass authentication via crafted XML data.
CVSS Score
8.8
EPSS Score
0.004
Published
2018-07-20
In Opencast 2.2.3 and older if user names overlap, the Opencast search service used for publication to the media modules and players will handle the access control incorrectly so that users only need to match part of the user name used for the access restriction. For example, a user with the role ROLE_USER will have access to recordings published only for ROLE_USER_X.
CVSS Score
6.5
EPSS Score
0.002
Published
2017-11-17
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 Score
8.1
EPSS Score
0.002
Published
2017-07-17