CVE-2020-8617

描述

Using a specially-crafted message, an attacker may potentially cause a BIND server to reach an inconsistent state if the attacker knows (or successfully guesses) the name of a TSIG key used by the server. Since BIND, by default, configures a local session key even on servers whose configuration does not otherwise make use of it, almost all current BIND servers are vulnerable. In releases of BIND dating from March 2018 and after, an assertion check in tsig.c detects this inconsistent state and deliberately exits. Prior to the introduction of the check the server would continue operating in an inconsistent state, with potentially harmful results.

如何修補 CVE-2020-8617

要修補 CVE-2020-8617,請將受影響套件升級到下列已修補版本。

• —升級至 9.14.12-r0 或更新版本

CVE-2020-8617 正在被利用嗎?

可能 — EPSS 為 93.4%,屬於高被利用機率區間,建議優先修補。

受影響套件(1)

• >= 9.0.0, < 9.14.12-r0

CVSS 分數

參考連結(1)

• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2020-8617