Stack-buffer-overflow in iasecc_crt_parse in opensc
Summary
OSV-2023-753: Stack-buffer-overflow in iasecc_crt_parse. Affects opensc versions >= ac8d87751607fcc8669bd63891ecaad1a466f718, < 2a4921ab23fd0853f327517636c50de947548161. Fixed in 2a4921ab23fd0853f327517636c50de947548161. How to fix ↓
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Background
OpenSC is an open-source smart card library that provides a set of cryptographic functions and smart card drivers. It is commonly used for interacting with smart cards and secure tokens. The vulnerability in question affects the iasecc_crt_parse function within OpenSC, which is responsible for parsing certificate data. This function is susceptible to a stack-buffer-overflow vulnerability, which can be triggered by a specially crafted input. This vulnerability can potentially lead to remote code execution or denial of service attacks.
Vulnerability Detail
The stack-buffer-overflow vulnerability in iasecc_crt_parse arises due to improper handling of input data. An attacker can exploit this vulnerability by providing a malicious input that exceeds the bounds of the stack buffer, leading to a buffer overflow. This can result in the overwriting of adjacent memory, potentially allowing the attacker to execute arbitrary code or crash the application. The vulnerability was discovered through OSS-Fuzz, and more details can be found in the provided link. The severity of this vulnerability is rated as MEDIUM.
How To Fix
Minimum fixed version
2a4921ab23fd0853f327517636c50de947548161
This is the first release that contains the fix.
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Workaround
As a temporary workaround, it is advisable to avoid processing untrusted certificate data until the package has been updated with the fix. This can help mitigate the risk of exploitation.
Conclusion
In conclusion, the iasecc_crt_parse function in OpenSC is vulnerable to a stack-buffer-overflow. This vulnerability can be exploited to execute arbitrary code or cause a denial of service. It is crucial to update the OpenSC package to a version that includes the fix to mitigate the risk. For further assistance or support in addressing this vulnerability, please contact DevNack.com.
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FAQ
OpenSC is an open-source smart card library that provides cryptographic functions and smart card drivers.
This vulnerability can potentially lead to remote code execution or denial of service attacks.
This vulnerability was discovered through OSS-Fuzz, a continuous fuzzing service for open-source software.
The severity of this vulnerability is rated as MEDIUM.
To fix this vulnerability, update the OpenSC package to a version that includes the fix.
References
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