Critical Buffer Overflow Vulnerability in Irssi Package
Summary
ALPINE-CVE-2018-5205: When using incomplete escape codes, Irssi before 1.0.6 may access data beyond the end of the string. Affects irssi versions < 1.0.6-r0. Fixed in 1.0.6-r0. How to fix ↓
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Background
Irssi is a popular text-based Internet Relay Chat (IRC) client designed for Unix-like operating systems. It is known for its extensibility and support for various protocols, making it a preferred choice among users who favor terminal-based applications. However, Irssi has been found to have a vulnerability that could lead to serious security issues if not addressed promptly.
Vulnerability Detail
The vulnerability, identified as CVE-2018-5205, arises from the use of incomplete escape codes in Irssi versions prior to 1.0.6. This flaw allows the application to access data beyond the end of a string, potentially leading to buffer overflow attacks. Such attacks can compromise the integrity of the application, allowing malicious actors to execute arbitrary code, manipulate data, or crash the application. The severity of this vulnerability is reflected in its CVSS score of 7.5, indicating a high risk to users.
How To Fix
Minimum fixed version
1.0.6-r0
This is the first release that contains the fix.
sudo apk add --upgrade irssiTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, users can avoid using incomplete escape codes in their configurations or scripts until the package is updated. This may help mitigate the risk of triggering the vulnerability.
Conclusion
The vulnerability CVE-2018-5205 in the Irssi package poses a significant risk due to its potential for buffer overflow attacks. Users are strongly advised to update to the patched version 1.0.6-r0 to mitigate this risk. Additionally, utilizing tools like Vulert can help in monitoring and managing vulnerabilities in open-source software effectively.
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FAQ
CVE-2018-5205 is a vulnerability in the Irssi IRC client that allows for potential buffer overflow attacks due to incomplete escape codes.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
If exploited, this vulnerability could allow attackers to execute arbitrary code, manipulate data, or crash the Irssi application.
Yes, a patch is available in version 1.0.6-r0 of the Irssi package. Users should update to this version or later.
Vulert is a tool that monitors and alerts users in real-time for open-source vulnerabilities in software by analyzing a manifest file like package-lock.json.
References
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