Denial of Service Vulnerability in MHonArc Package
Summary
DEBIAN-CVE-2010-1677: MHonArc 2.6.16 allows remote attackers to cause a denial of service (CPU consumption) via start tags that are placed within other start tags, as demonstrated by a sequence, a different vulnerability than CVE-2010-4524. Affects mhonarc versions < 2.6.18-1. Fixed in 2.6.18-1. How to fix ↓
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Background
MHonArc is a popular email archiving software that allows users to create and manage web-based archives of email messages. It is widely used for its ability to convert email messages into HTML format, making them easily accessible and searchable. However, MHonArc versions prior to 2.6.18-1 are vulnerable to a denial of service attack due to improper handling of nested start tags in HTML input, which can lead to excessive CPU consumption.
Vulnerability Detail
The vulnerability identified as CVE-2010-1677 affects MHonArc version 2.6.16 and earlier. It allows remote attackers to exploit the software by sending specially crafted HTML input containing nested start tags, such as '<bo<bo<bo<bo<body>dy>dy>dy>dy>'. This malformed input can cause the application to consume excessive CPU resources, leading to a denial of service condition. This vulnerability is distinct from CVE-2010-4524 and poses a significant risk to systems running affected versions of MHonArc.
How To Fix
Minimum fixed version
2.6.18-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade mhonarcTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate patching is not feasible, consider implementing input validation to sanitize HTML input before processing it with MHonArc. This can help prevent malformed input from reaching the application and mitigate the risk of denial of service.
Conclusion
CVE-2010-1677 is a critical denial of service vulnerability affecting MHonArc versions prior to 2.6.18-1. Users are strongly advised to update to the latest version to protect their systems from potential exploitation. Additionally, implementing input validation can serve as a temporary measure until the update can be applied.
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FAQ
CVE-2010-1677 is a vulnerability in MHonArc that allows remote attackers to cause a denial of service by sending specially crafted HTML input.
If you are using MHonArc version 2.6.16 or earlier, your installation is vulnerable to CVE-2010-1677.
Exploitation of this vulnerability can lead to excessive CPU consumption, resulting in a denial of service condition for the affected system.
Yes, you can use Vulert, which monitors and alerts in real-time for open-source vulnerabilities in your software. You can check if your application is affected by this vulnerability using the Vulert playground without any signup.
If you cannot update immediately, consider implementing input validation to sanitize HTML input as a temporary workaround.
References
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