Heap Buffer Overflow in Irssi: CVE-2018-5208 Vulnerability
Summary
ALPINE-CVE-2018-5208: In Irssi before 1.0.6, a calculation error in the completion code could cause a heap buffer overflow when completing certain strings. 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 terminal-based IRC client that allows users to connect to IRC networks and chat with others. It is known for its extensibility and support for various protocols. However, prior to version 1.0.6, Irssi contained a vulnerability that could lead to a heap buffer overflow, particularly when handling certain string completions. This flaw could potentially compromise the integrity and security of the application.
Vulnerability Detail
In Irssi versions before 1.0.6, a calculation error in the completion code could lead to a heap buffer overflow when completing specific strings. This vulnerability, identified as CVE-2018-5208, can allow attackers to exploit the flaw, potentially leading to arbitrary code execution, data corruption, or crashes. The severity of this vulnerability is high, with a CVSS score of 9.8, indicating a critical risk to users who have not updated their software.
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 measure, users can avoid using the string completion feature in Irssi until they have updated to the patched version. This can help mitigate the risk of exploitation while waiting for a proper fix.
Conclusion
The CVE-2018-5208 vulnerability in Irssi poses a significant risk to users of the IRC client. It is crucial to update to version 1.0.6 or later to mitigate the risks associated with this vulnerability. Users should also consider using tools like Vulert to monitor for vulnerabilities in their software.
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FAQ
CVE-2018-5208 is a vulnerability in Irssi that can lead to a heap buffer overflow due to a calculation error in the completion code.
The risks include potential arbitrary code execution, data corruption, and application crashes, which can compromise user data and system integrity.
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 you cannot update immediately, avoid using the string completion feature in Irssi as a temporary workaround to reduce the risk of exploitation.
More information about Irssi can be found on its official website or its GitHub repository, where you can also find documentation and community support.
References
Related vulnerabilities
Recent vulnerabilities recorded for irssi.
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