Vulnerability in Ruby OpenSSL Extension
Summary
DSA-3245-1: ruby1.8 - security update. Affects ruby1.8 versions < 1.8.7.358-7.1+deb7u3. Fixed in 1.8.7.358-7.1+deb7u3. How to fix ↓
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Background
The Ruby programming language is widely used for developing web applications and scripts. Ruby1.8 is a specific version of Ruby that is part of the Debian 7 (wheezy) distribution. It includes the OpenSSL extension, which allows Ruby programs to interact with SSL/TLS protocols for secure communication. However, a security flaw has been discovered in the Ruby OpenSSL extension that affects the hostname matching functionality.
Vulnerability Detail
The Ruby OpenSSL extension in Ruby1.8 does not properly implement hostname matching according to RFC 6125. This vulnerability could be exploited by remote attackers to perform man-in-the-middle attacks using specially crafted SSL certificates. By exploiting this flaw, an attacker could intercept and modify SSL/TLS communications between a Ruby1.8 application and its intended server, potentially leading to unauthorized access, data leakage, or other malicious activities.
How To Fix
Minimum fixed version
1.8.7.358-7.1+deb7u3
This is the first release that contains the fix.
sudo apt-get install --only-upgrade ruby1.8Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no known workaround for this vulnerability. It is necessary to apply the security update to the ruby1.8 package to mitigate the risk.
Conclusion
The vulnerability in the Ruby OpenSSL extension of Ruby1.8 can be mitigated by updating the ruby1.8 package to the patched version. It is crucial to apply this security update to protect against potential man-in-the-middle attacks and ensure the integrity and confidentiality of SSL/TLS communications. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability allows remote attackers to perform man-in-the-middle attacks on Ruby1.8 applications using crafted SSL certificates. This can lead to unauthorized access, data manipulation, or interception of sensitive information.
If your application uses the Ruby1.8 interpreter and interacts with SSL/TLS protocols, it may be affected by this vulnerability. It is recommended to check the version of the ruby1.8 package and apply the security update if necessary.
Yes, remote attackers can exploit this vulnerability by intercepting SSL/TLS communications between a Ruby1.8 application and its intended server. This can be done by presenting a specially crafted SSL certificate during the SSL/TLS handshake.
There are no known instances of this vulnerability being actively exploited in the wild. However, it is still important to apply the security update to protect against potential future attacks.
You can find more information about this vulnerability in the Debian Security Advisory DSA-3245-1. Additionally, you can refer to the CVE-2015-1855 identifier for further details.
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