Out-of-Bounds Access Vulnerability in ngIRCd - CVE-2020-14148
Summary
ALPINE-CVE-2020-14148: The Server-Server protocol implementation in ngIRCd before 26~rc2 allows an out-of-bounds access, as demonstrated by the IRC_NJOIN() function. Affects ngircd versions < 25-r1. Fixed in 25-r1. How to fix ↓
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Background
ngIRCd is an Internet Relay Chat (IRC) server that allows users to communicate in real-time over the internet. It is designed to be lightweight and easy to configure, making it a popular choice for small to medium-sized communities. The server supports various features such as channel management, user authentication, and server-to-server communication. However, a critical vulnerability has been identified in its Server-Server protocol implementation, which could lead to security risks if not addressed.
Vulnerability Detail
The vulnerability identified as CVE-2020-14148 in ngIRCd prior to version 26~rc2 allows for out-of-bounds access due to improper handling of data in the IRC_NJOIN() function. This flaw can be exploited by an attacker to potentially execute arbitrary code or crash the server, leading to denial of service. The vulnerability arises from insufficient validation of input data, which can result in memory corruption and unpredictable behavior of the server.
How To Fix
Minimum fixed version
25-r1
This is the first release that contains the fix.
sudo apk add --upgrade ngircdTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate patching is not feasible, consider restricting access to the ngIRCd server to trusted users only. Additionally, monitor server logs for any unusual activity that may indicate an attempted exploit.
Conclusion
The CVE-2020-14148 vulnerability in ngIRCd poses significant risks due to its potential for out-of-bounds access. It is crucial for users to update to the patched version 25-r1 or later to mitigate these risks. For those unable to update immediately, implementing access restrictions and monitoring server activity can serve as temporary measures.
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FAQ
CVE-2020-14148 is a vulnerability in ngIRCd that allows for out-of-bounds access, potentially leading to server crashes or arbitrary code execution.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
The CVSS score for CVE-2020-14148 is 7.5, indicating a high severity level.
If you cannot update immediately, restrict access to the server and monitor logs for suspicious activity as a temporary measure.
You can find more information about ngIRCd and its features on its official website or GitHub repository.
References
Related vulnerabilities
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