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云安全日报211202：Ubuntu网络安全服务库发现执行任意代码漏洞，需要尽快升级

来源：鹿车共挽网编辑：热点时间：2026-11-14

网络安全服务（Network Security Services，简称NSS）是一组支持云安跨平台开发安全客户端与服务器应用程序的程序库，它提供服务器侧硬件TLS/SSL加速和客户全日端侧智能卡的可选支持。12月1日，Ubuntu发布了安全更新,修复了Ubuntu网络安全服务库报2中发现的执行任意代码漏洞。以下是漏洞详情：

漏洞详情

来源:https://ubuntu.com11/security/notices/USN-5168-1

CVE-2021-43527 严20重程度:高的

NSS错误地处理了验证 DSA/RSA-PSS签名。远程攻击者可以利用此问题导致 N2：SS 崩溃，从而导致拒绝服务，或者可能执行任意代码。

受影响产品和版本

上述漏洞影响UbuntUbu 21.10, Ubuntu 21.04, Ubuntu 20.04 LTS, Ubuntu 18.0un4 LTS

解决方案

官方已发布更新,修复了上述漏洞。可以通过将系统更新到以下软件包版本来更正问题：

Utubuntu 21.10:

libnss3 - 2:3.68-1ubuntu1.1

Ubuntu 2网络1.04:

libnss3 - 2:3.61-1ubuntu2.1

Ubuntu 20.04:

li安全bnss3 - 2:3.49.1-1ubuntu1.6

Ubuntu 18.04:

libns服务s3 - 2:3.35-2ubuntu2.13

查看更多漏洞信息以及升级请访问官网：

http库发s://ubuntu.com/security/cve

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