Infinite Loop Vulnerability in expat
Summary
DLA-990-1: expat - security update. Affects expat versions < 2.1.0-1+deb7u5. Fixed in 2.1.0-1+deb7u5. How to fix ↓
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Background
expat is a C library used for parsing XML. It provides a set of functions and tools for reading, manipulating, and generating XML data. The library is widely used in various applications and frameworks that require XML parsing functionality. However, a vulnerability has been discovered in expat that allows for an infinite loop to occur during XML parsing.
Vulnerability Detail
The vulnerability in expat arises from a flaw in the XML parsing logic. An attacker can craft a malicious XML file that triggers an infinite loop in the parsing process, leading to a denial of service (DoS) condition. This can result in excessive CPU and memory usage, causing the affected application or system to become unresponsive. The vulnerability can be exploited remotely by an attacker with the ability to provide a specially crafted XML file to the targeted application.
How To Fix
Minimum fixed version
2.1.0-1+deb7u5
This is the first release that contains the fix.
sudo apt-get install --only-upgrade expatTip — 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 provided fix by upgrading the expat package to the patched version.
Conclusion
The infinite loop vulnerability in expat can be mitigated by upgrading the package to the patched version. It is recommended to promptly apply the fix to ensure the security and stability of the affected systems. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for expat →
FAQ
expat is a C library used for parsing XML. It provides functions and tools for reading, manipulating, and generating XML data.
The vulnerability allows for an infinite loop to occur during XML parsing, leading to a denial of service condition. This can result in excessive CPU and memory usage, causing the affected application or system to become unresponsive.
Yes, this vulnerability can be exploited remotely by an attacker who can provide a specially crafted XML file to the targeted application.
No, there is no known workaround for this vulnerability. It is necessary to upgrade the expat package to the patched version.
You can update the expat package using the package manager of the Debian 7 Wheezy distribution. Use the following command:
$ sudo apt-get update $ sudo apt-get upgrade expat
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