CVE-2017-3736

描述

There is a carry propagating bug in the x86_64 Montgomery squaring procedure in OpenSSL before 1.0.2m and 1.1.0 before 1.1.0g. No EC algorithms are affected. Analysis suggests that attacks against RSA and DSA as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH are considered just feasible (although very difficult) because most of the work necessary to deduce information about a private key may be performed offline. The amount of resources required for such an attack would be very significant and likely only accessible to a limited number of attackers. An attacker would additionally need online access to an unpatched system using the target private key in a scenario with persistent DH parameters and a private key that is shared between multiple clients. This only affects processors that support the BMI1, BMI2 and ADX extensions like Intel Broadwell (5th generation) and later or AMD Ryzen.

如何修補 CVE-2017-3736

要修補 CVE-2017-3736,請將受影響套件升級到下列已修補版本。

• —升級至 1.0.2m-r0 或更新版本

CVE-2017-3736 正在被利用嗎?

中等 — EPSS 為 10.1%,可持續追蹤但非最高優先。

受影響套件(1)

• >= 1.0.2, < 1.0.2m-r0

CVSS 分數

參考連結(1)

• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2017-3736