Denial of Service (DoS) The advisory has been revoked - it doesn't affect any version of package keycloak-nodejs-connect (opens in a new tab)
Threat Intelligence
Exploit maturity not defined.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-JS-KEYCLOAKNODEJSCONNECT-449920
- published14 Jun 2019
- disclosed12 Jun 2019
- creditUnknown
Introduced: 12 Jun 2019
CVE-2019-10157 (opens in a new tab)Amendment
This was deemed not a vulnerability.
Overview
keycloak-nodejs-connect is a standalone authentication server that provides hooks for federated authentication.
Affected versions of this package are vulnerable to Denial of Service (DoS). The Node.js adapter did not properly verify the web token received from the server. An attacker with local access could use this to construct a malicious web token setting an NBF parameter that could prevent user access indefinitely.
Details
Denial of Service (DoS) describes a family of attacks, all aimed at making a system inaccessible to its intended and legitimate users.
Unlike other vulnerabilities, DoS attacks usually do not aim at breaching security. Rather, they are focused on making websites and services unavailable to genuine users resulting in downtime.
One popular Denial of Service vulnerability is DDoS (a Distributed Denial of Service), an attack that attempts to clog network pipes to the system by generating a large volume of traffic from many machines.
When it comes to open source libraries, DoS vulnerabilities allow attackers to trigger such a crash or crippling of the service by using a flaw either in the application code or from the use of open source libraries.
Two common types of DoS vulnerabilities:
High CPU/Memory Consumption- An attacker sending crafted requests that could cause the system to take a disproportionate amount of time to process. For example, commons-fileupload:commons-fileupload.
Crash - An attacker sending crafted requests that could cause the system to crash. For Example, npm
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