CVE-2025-9071— Insecure RSA-OAEP implementation with all-zero seed for padding in Oberon PSA Crypto
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I. Basic Information for CVE-2025-9071
Vulnerability Information
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Vulnerability Title
Insecure RSA-OAEP implementation with all-zero seed for padding in Oberon PSA Crypto
Source: NVD (National Vulnerability Database)
Vulnerability Description
Erroneously using an all-zero seed for RSA-OEAP padding instead of the generated random bytes, in Oberon microsystems AG’s Oberon PSA Crypto library in all versions up to 1.5.1, results in deterministic RSA and thus in a loss of confidentiality for guessable messages, recognition of repeated messages, and loss of security proofs.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
未配合OAEP使用RSA算法
Source: NVD (National Vulnerability Database)
Vulnerability Title
Oberon PSA Crypto library 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Oberon PSA Crypto library是瑞士Oberon公司的一款加密库。 Oberon PSA Crypto library 1.5.1及之前版本存在安全漏洞，该漏洞源于使用全零种子代替随机字节，可能导致RSA确定性加密，从而造成机密性丢失。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Oberon microsystems AG | Oberon PSA Crypto | 1.0.0 ~ 1.5.1 | - |
II. Public POCs for CVE-2025-9071
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Oberon microsystems AG · 2025-08-29 · 3 CVEs total
| CVE-2025-7383 | Timing side-channel vulnerability in AES-CBC decryption with PKCS#7 padding in Oberon PSA | |
| CVE-2025-7071 | Timing side-channel vulnerability in AES-CBC decryption with PKCS#7 padding in ocrypto lib |
IV. Related Vulnerabilities
V. Comments for CVE-2025-9071
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