CVE-2023-0401
`NULL` dereference during PKCS7 data verification
描述
A NULL pointer can be dereferenced when signatures are being verified on PKCS7 signed or signedAndEnveloped data. In case the hash algorithm used for the signature is known to the OpenSSL library but the implementation of the hash algorithm is not available the digest initialization will fail. There is a missing check for the return value from the initialization function which later leads to invalid usage of the digest API most likely leading to a crash. The unavailability of an algorithm can be caused by using FIPS enabled configuration of providers or more commonly by not loading the legacy provider. PKCS7 data is processed by the SMIME library calls and also by the time stamp (TS) library calls. The TLS implementation in OpenSSL does not call these functions however third party applications would be affected if they call these functions to verify signatures on untrusted data.
如何修補 CVE-2023-0401
要修補 CVE-2023-0401,請將受影響套件升級到下列已修補版本。
- —升級至 3.0.8-r0 或更新版本
- —升級至 3.0.8-r0 或更新版本
CVE-2023-0401 正在被利用嗎?
低 — EPSS 為 1.8%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- >= 3.0.0, < 3.0.8-r0
- from 0, < 3.0.8-r0
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |