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Vulnerability DatabaseCVE-2023-50979
CVE-2023-50979:
Linux Debian vulnerability analysis and mitigation
Overview
Crypto++ (also known as cryptopp) through version 8.9.0 contains a vulnerability known as the Marvin side channel during decryption operations when using PKCS#1 v1.5 padding. The vulnerability was discovered and reported on November 12, 2023 (GitHub Issue).
Technical details
The vulnerability is a timing variant of the well-known Bleichenbacher attack. Testing performed on an AMD Ryzen 5 5600X processor demonstrated a detectable side-channel signal during decryption with PKCS#1 v1.5 padding. The tests showed statistically significant results with just a few hundred measurement pairs, with a mean difference of 3.61457e-07s between valid and invalid ciphertexts. The vulnerability received a CVSS v3.1 Base Score of 5.9 (Medium) with a vector of CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N (NVD).
Impact
The vulnerability could potentially allow attackers to extract sensitive information through timing analysis of the decryption process. The side-channel leakage in the numerical library suggests that all padding modes using the same RSADP() primitive, including RSA-OAEP, may be similarly vulnerable (GitHub Issue).
Additional resources
Source: This report was generated using AI
Related Linux Debian vulnerabilities:
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