pcsc-lite - Use-After-Free and Double-Free Vulnerability
Summary
DLA-778-1: pcsc-lite - security update. Affects pcsc-lite versions < 1.8.4-1+deb7u2. Fixed in 1.8.4-1+deb7u2. How to fix ↓
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Background
pcsc-lite is a library that provides access to smart cards using the Windows SCard interface (PC/SC). It allows applications to communicate with smart cards and perform various operations such as reading, writing, and authentication. The library is commonly used in systems that require smart card functionality, such as authentication systems and secure access control. However, a vulnerability has been discovered in pcsc-lite that could potentially be exploited by an attacker.
Vulnerability Detail
The vulnerability in pcsc-lite is a use-after-free and double-free vulnerability. This type of vulnerability occurs when a program continues to use a pointer after it has been freed or when it frees a pointer multiple times. In the case of pcsc-lite, this vulnerability could allow an attacker to execute arbitrary code or cause a denial of service by exploiting the memory corruption caused by the use-after-free or double-free condition. The impact of this vulnerability can vary depending on the context in which pcsc-lite is used, but it has the potential to compromise the security and integrity of systems that rely on smart card functionality.
How To Fix
Minimum fixed version
1.8.4-1+deb7u2
This is the first release that contains the fix.
sudo apt-get install --only-upgrade pcsc-liteTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Conclusion
The use-after-free and double-free vulnerability in pcsc-lite can potentially be exploited by an attacker to execute arbitrary code or cause a denial of service. It is crucial to upgrade the pcsc-lite package to the fixed version to mitigate the risk. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for pcsc-lite →
FAQ
pcsc-lite is a library that provides access to smart cards using the Windows SCard interface (PC/SC). It allows applications to communicate with smart cards and perform various operations such as reading, writing, and authentication.
A use-after-free vulnerability occurs when a program continues to use a pointer after it has been freed. This can lead to memory corruption and potentially allow an attacker to execute arbitrary code or cause a denial of service.
A double-free vulnerability occurs when a program frees a pointer multiple times. This can also lead to memory corruption and potentially allow an attacker to execute arbitrary code or cause a denial of service.
The impact of this vulnerability can vary depending on the context in which pcsc-lite is used. However, it has the potential to compromise the security and integrity of systems that rely on smart card functionality.
To fix this vulnerability, it is recommended to upgrade the pcsc-lite package to version 1.8.4-1+deb7u2 or later. Detailed instructions on how to upgrade the package can be found in the Debian Security Advisory DLA-778-1.
Related vulnerabilities
Recent vulnerabilities recorded for pcsc-lite.
