GHSA-g37q-26qx-8v2m CVE-2020-13951
Denial of service in Apache OpenMeetings
High
Maven
- Severity
- 7.5 / 10
- High · CVSS 3.1
- Exploit chance (EPSS)
- 68.58%
- Chance of exploitation in the next 30 days. Higher than 99.34% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-400 Uncontrolled Resource Consumption
- Fix
5.1.0- Upgrade org.apache.openmeetings:openmeetings-parent to this version or later
Description
Attackers can use public NetTest web service of Apache OpenMeetings 4.0.0-5.0.0 to organize denial of service attack.
Affected versions
Maven
| Package | Vulnerable | Fixed in |
|---|---|---|
| org.apache.openmeetings:openmeetings-parent | >= 4.0.0, < 5.1.0 |
5.1.0 |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
org.apache.openmeetings:openmeetings-parent Maven → 5.1.0
- maven
<dependency><groupId>org.apache.openmeetings</groupId><artifactId>openmeetings-parent</artifactId><version>5.1.0</version></dependency>- gradle
implementation("org.apache.openmeetings:openmeetings-parent:5.1.0")
Severity breakdown
CVSS 3.1 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Weakness
CWE-400: Uncontrolled Resource Consumption
The product does not properly control the allocation and maintenance of a limited resource.
How to prevent it
- Architecture and Design: Design throttling mechanisms into the system architecture. The best protection is to limit the amount of resources that an unauthorized user can cause to be expended. A strong authentication and access control model will help prevent such attacks from occurring in the first place. The login application should be protected against DoS attacks as much as possible. Limiting the database access, perhaps by caching result sets, can help minimize the resources expended. To further limit the potential for a DoS attack, consider tracking the rate of requests received from users and blocking requests that exceed a defined rate threshold.
- Architecture and Design: Mitigation of resource exhaustion attacks requires that the target system either: recognizes the attack and denies that user further access for a given amount of time, or uniformly throttles all requests in order to make it more difficult to consume resources more quickly than they can again be freed. The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question. The second solution is simply difficult to effectively institute -- and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.
- Architecture and Design: Ensure that protocols have specific limits of scale placed on them.
- Implementation: Ensure that all failures in resource allocation place the system into a safe posture.
References
Advisories
Other links
- lists.apache.org/thread.html/r1125f3044a0946d1e7e6f125a6170b58d413ebd4a95157e4608041c…
- lists.apache.org/thread.html/r90890afea72a9571d666820b2fe5942a0a5f86be406fa31da3dd092…
- lists.apache.org/thread.html/re2aed827cd24ae73cbc320e5808020c8d12c7b687ee861b27d728bb…
- packetstormsecurity.com/files/160186/Apache-OpenMeetings-5.0.0-Denial-Of-Service.html
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-gcvm-c75m-h4p4 Apache OpenMeetings Uses GET Request Method With Sensitive Query Strings | High | Also affects org.apache.openmeetings:openmeetings-parent |
| GHSA-wqxq-w68r-wg85 Apache OpenMeetings Uses Hard-coded Cryptographic Key | High | Also affects org.apache.openmeetings:openmeetings-parent |
| GHSA-78cg-fc6c-w44w Apache OpenMeetings has an Improper Handling of Insufficient Privileges vulnerability | Medium | Also affects org.apache.openmeetings:openmeetings-parent |
| GHSA-mjf9-4pcv-vfg7 Apache OpenMeetings vulnerable to Deserialization of Untrusted Data | Critical | Also affects org.apache.openmeetings:openmeetings-parent |
| GHSA-mg5h-f3q8-c96g Apache OpenMeetings vulnerable to remote code execution via null-bye injection | High | Also affects org.apache.openmeetings:openmeetings-parent |
| GHSA-v9rm-7rv9-r3fw Apache OpenMeetings Improper Authentication vulnerability | High | Also affects org.apache.openmeetings:openmeetings-parent |
| GHSA-3r48-3m8r-4r9w Apache OpenMeetings missing authentication and can allow user impersonation | Critical | Also affects org.apache.openmeetings:openmeetings-parent |
| GHSA-pxj9-mw96-q634 Apache OpenMeetings Cross-site Scripting vulnerability | Medium | Also affects org.apache.openmeetings:openmeetings-parent |
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