XMLRPC-EPI - Heap-based Buffer Overflow Vulnerability
Summary
DLA-569-1: xmlrpc-epi - security update. Affects xmlrpc-epi versions < 0.54.2-1+deb7u1. Fixed in 0.54.2-1+deb7u1. How to fix ↓
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Background
XMLRPC-EPI is a library for implementing XML-RPC protocol clients and servers in C. It provides a simple and efficient way to communicate between different systems over a network using XML. The library is widely used in various applications and frameworks that require remote procedure calls. However, a vulnerability has been discovered in versions prior to 0.54.2-1+deb7u1 that could allow remote attackers to cause a denial of service or potentially execute arbitrary code.
Vulnerability Detail
The vulnerability in XMLRPC-EPI is due to an integer signedness error in the simplestring_addn function in simplestring.c. This error can be exploited by sending a long first argument to the PHP xmlrpc_encode_request function, leading to a heap-based buffer overflow. An attacker could craft a malicious request to trigger this vulnerability and potentially execute arbitrary code or crash the application. This could result in a denial of service or even compromise the security of the system.
How To Fix
Minimum fixed version
0.54.2-1+deb7u1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade xmlrpc-epiTip — 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 recommended to apply the fix as soon as possible to mitigate the risk of exploitation.
Conclusion
The XMLRPC-EPI library is vulnerable to a heap-based buffer overflow, which could allow remote attackers to execute arbitrary code or cause a denial of service. It is crucial to update the xmlrpc-epi package to version 0.54.2-1+deb7u1 or later to mitigate the risk of exploitation. For further assistance or support in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for xmlrpc-epi →
FAQ
XMLRPC-EPI is a library for implementing XML-RPC protocol clients and servers in C. It provides a simple and efficient way to communicate between different systems over a network using XML.
A heap-based buffer overflow is a type of vulnerability where a program writes more data to a buffer in the heap memory than it can hold. This can lead to memory corruption and potentially allow an attacker to execute arbitrary code or crash the application.
An attacker can exploit this vulnerability by sending a specially crafted request with a long first argument to the PHP xmlrpc_encode_request function. This triggers the buffer overflow and can lead to arbitrary code execution or a denial of service.
Yes, a fix is available in version 0.54.2-1+deb7u1 of the xmlrpc-epi package. It is recommended to update the package to this version or later to mitigate the risk of exploitation.
There are no known workarounds for this vulnerability. It is recommended to apply the fix as soon as possible.
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