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Ubuntu - Bind vulnerabilities (2020-05-20)

来源:Ubuntu官网 发布日期:2020-05-20 阅读次数:2267 评论:0

基本信息

发布日期:2020-05-20(官方当地时间)

更新类型:安全更新

更新版本:未知

感知时间:2020-05-21 03:20:26

风险等级:未知

情报贡献:TSRC

更新标题

USN-4365-2: Bind vulnerabilities

更新详情

bind9 vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
Ubuntu 14.04 ESM
Ubuntu 12.04 ESM
Summary
Several security issues were fixed in Bind.
Software Description
bind9 - Internet Domain Name Server
Details
USN-4365-1 fixed several vulnerabilities in Bind. This update provides the corresponding update for Ubuntu 12.04 ESM and 14.04 ESM. Original advisory details:
Lior Shafir, Yehuda Afek, and Anat Bremler-Barr discovered that Bind incorrectly limited certain fetches. A remote attacker could possibly use this issue to cause Bind to consume resources, leading to a denial of service, or possibly use Bind to perform a reflection attack. (CVE-2020-8616)
Tobias Klein discovered that Bind incorrectly handled checking TSIG validity. A remote attacker could use this issue to cause Bind to crash, resulting in a denial of service, or possibly perform other attacks. (CVE-2020-8617)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 14.04 ESM
bind9 - 1:9.9.5.dfsg-3ubuntu0.19+esm2
Ubuntu 12.04 ESM
bind9 - 1:9.8.1.dfsg.P1-4ubuntu0.30
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
References
USN-4365-1
CVE-2020-8616
CVE-2020-8617
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软件描述

Ubuntu是一个以桌面应用为主的Linux操作系统

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