Use-of-uninitialized-value in libecc: fp_uninit
Summary
OSV-2023-1115: Use-of-uninitialized-value in fp_uninit. Affects libecc versions >= b9329e2826f4d622dbb9ffdd9316e98fda7a023f, < b9329e2826f4d622dbb9ffdd9316e98fda7a023f. Fixed in b9329e2826f4d622dbb9ffdd9316e98fda7a023f. How to fix ↓
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Background
The libecc package is an open-source library that provides cryptographic functions for elliptic curve cryptography (ECC). It is commonly used in various applications that require secure communication and data encryption. The vulnerability in question arises from the use of uninitialized values within the fp_uninit function of the libecc module.
Vulnerability Detail
The vulnerability, identified as OSV-2023-1115, is categorized as a Use-of-uninitialized-value issue. It was reported through the OSS-Fuzz project, and more details can be found in the associated bug report (https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=63867). The crash state indicates that the issue occurs during the execution of the OpECC_ValidatePubkey function within the libecc module. This vulnerability could potentially lead to unexpected behavior, crashes, or even security breaches when processing public keys in ECC operations.
How To Fix
Minimum fixed version
b9329e2826f4d622dbb9ffdd9316e98fda7a023f
This is the first release that contains the fix.
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Workaround
As a workaround, developers can manually initialize the values used within the fp_uninit function to avoid the use of uninitialized values. Here is an example of how to initialize the relevant values:
// Initialize the value
int value = 0;
Conclusion
In conclusion, the libecc package is affected by a Use-of-uninitialized-value vulnerability in the fp_uninit function. This vulnerability can have various negative consequences, including crashes and potential security breaches. It is crucial to update to the latest version of the libecc package that includes the fix for this vulnerability. Developers can also manually initialize the relevant values as a temporary workaround. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
This vulnerability can result in unexpected behavior, crashes, or potential security breaches when processing public keys in ECC operations using the libecc package.
The vulnerability was discovered through the OSS-Fuzz project, which performs continuous fuzz testing on open-source software to identify potential issues.
Yes, a fix has been implemented in commit b9329e2826f4d622dbb9ffdd9316e98fda7a023f of the libecc repository. It is recommended to update to the latest version of the libecc package that includes this fix.
Yes, developers can manually initialize the values used within the fp_uninit function to avoid the use of uninitialized values. Refer to the provided workaround section for an example.
You can find more information about this vulnerability in the associated bug report (https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=63867) and the vulnerability database entry (https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libecc/OSV-2023-1115.yaml).
References
Related vulnerabilities
Recent vulnerabilities recorded for libecc.
