CVE-2019-1563

描述

In situations where an attacker receives automated notification of the success or failure of a decryption attempt an attacker, after sending a very large number of messages to be decrypted, can recover a CMS/PKCS7 transported encryption key or decrypt any RSA encrypted message that was encrypted with the public RSA key, using a Bleichenbacher padding oracle attack. Applications are not affected if they use a certificate together with the private RSA key to the CMS_decrypt or PKCS7_decrypt functions to select the correct recipient info to decrypt. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c). Fixed in OpenSSL 1.1.0l (Affected 1.1.0-1.1.0k). Fixed in OpenSSL 1.0.2t (Affected 1.0.2-1.0.2s).

如何修補 CVE-2019-1563

要修補 CVE-2019-1563,請將受影響套件升級到下列已修補版本。

• —升級至 1.1.1d-r0 或更新版本
• —升級至 1.1.1d-r1 或更新版本

CVE-2019-1563 正在被利用嗎?

低 — EPSS 為 3.8%,目前沒有觀察到大規模利用活動。

受影響套件(2)

• >= 1.0.2, < 1.1.1d-r0
• from 0, < 1.1.1d-r1

CVSS 分數

參考連結(1)

• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2019-1563