Vulnerability in libsoap-lite-perl - Billion Laughs XML Expansion
Summary
DLA-723-1: libsoap-lite-perl - security update. Affects libsoap-lite-perl versions < 0.714-1+deb7u1. Fixed in 0.714-1+deb7u1. How to fix ↓
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Background
libsoap-lite-perl is a Perl implementation of a SOAP client and server. SOAP (Simple Object Access Protocol) is a protocol for exchanging structured information in web services. libsoap-lite-perl allows developers to create and consume SOAP messages in Perl applications. However, a vulnerability known as Billion Laughs XML expansion has been discovered in this library.
Vulnerability Detail
The Billion Laughs XML expansion vulnerability is a type of Denial of Service (DoS) attack that exploits the way XML parsers handle entity expansion. By crafting a malicious XML document with nested entity references, an attacker can cause the XML parser to consume excessive resources, leading to a DoS condition. In the case of libsoap-lite-perl, this vulnerability allows an attacker to send a specially crafted SOAP message that triggers the Billion Laughs XML expansion, potentially causing the server to become unresponsive or crash.
How To Fix
Minimum fixed version
0.714-1+deb7u1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade libsoap-lite-perlTip — 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 essential to apply the security update mentioned in the 'how_to_fix' section to protect your system from potential attacks.
Conclusion
The Billion Laughs XML expansion vulnerability in libsoap-lite-perl can be mitigated by upgrading to the latest version of the package. It is crucial to apply the security update to protect your system from potential DoS attacks. For further support on vulnerability remediation, you can reach out to DevNack.com.
See every vulnerability recorded for libsoap-lite-perl →
FAQ
The vulnerability allows an attacker to launch a Denial of Service (DoS) attack by sending a specially crafted SOAP message. This can result in the server becoming unresponsive or crashing, leading to service disruption.
No, this vulnerability only affects systems that have the libsoap-lite-perl package installed.
Yes, an attacker can exploit this vulnerability remotely by sending a malicious SOAP message to the affected server.
There have been no reports of this vulnerability being actively exploited in the wild.
You can refer to the Wikipedia page on Billion Laughs for more information about this type of vulnerability.
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