Denial of Service Vulnerability in shibboleth-sp2
Summary
DSA-3207-1: shibboleth-sp2 - security update. Affects shibboleth-sp2 versions < 2.4.3+dfsg-5+deb7u1. Fixed in 2.4.3+dfsg-5+deb7u1. How to fix ↓
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Background
Shibboleth is an open-source federated identity framework that enables secure single sign-on across multiple systems. The Shibboleth Service Provider (shibboleth-sp2) is a component of this framework that runs on the service provider's side and handles authentication and authorization. It is widely used in various applications and platforms to provide secure access to resources.
The shibboleth-sp2 package in Debian 7 (wheezy) and later versions is vulnerable to a denial of service attack. An authenticated attacker can exploit this vulnerability by sending a specially crafted malformed SAML message to the service provider, causing the daemon to crash.
Vulnerability Detail
The vulnerability (CVE-2015-2684) in shibboleth-sp2 allows an authenticated attacker to crash the service provider daemon by sending a malformed SAML message. This can lead to a denial of service, disrupting the availability of the service and potentially impacting the users relying on it. The vulnerability arises from a failure to properly handle certain inputs, resulting in a crash of the daemon process.
The impact of this vulnerability can be severe, as it can be exploited remotely by an authenticated attacker. It is important to address this vulnerability promptly to ensure the continued availability and security of the service.
How To Fix
Minimum fixed version
2.4.3+dfsg-5+deb7u1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade shibboleth-sp2Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Conclusion
The shibboleth-sp2 package in Debian 7 (wheezy) and later versions is vulnerable to a denial of service attack. Upgrading to the patched version of the package will mitigate this vulnerability and ensure the continued availability and security of the service. It is important to promptly address this vulnerability to prevent potential disruptions and protect the users relying on the service.
For further support on vulnerability remediation, you can contact DevNack.com.
See every vulnerability recorded for shibboleth-sp2 →
FAQ
Shibboleth Service Provider (shibboleth-sp2) is a component of the Shibboleth federated identity framework. It runs on the service provider's side and handles authentication and authorization, enabling secure single sign-on across multiple systems.
The vulnerability allows an authenticated attacker to crash the shibboleth-sp2 daemon, leading to a denial of service. This can disrupt the availability of the service and potentially impact the users relying on it.
To fix this vulnerability, upgrade the shibboleth-sp2 package to the patched version. For Debian 7 (wheezy), upgrade to version 2.4.3+dfsg-5+deb7u1. For Debian 8 (jessie) and later versions, upgrade to version 2.5.3+dfsg-2. Follow the standard package upgrade process for your Debian distribution.
Yes, this vulnerability can be exploited remotely by an authenticated attacker.
No specific workaround is mentioned for this vulnerability. It is recommended to upgrade the shibboleth-sp2 package to the patched version.
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