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云安全日报210317:Ubuntu Linux内核发现拒绝服务漏洞,需要尽快升级
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简介...
Ubuntu是一个以桌面应用为主的Linux操作系统。它是一个开放源代码的自由软件,提供了一个健壮、功能丰富的计算环境,既适合家庭使用又适用于商业环境。Ubuntu为全球数百个公司提供商业支持。
3月16日,Ubuntu发布了安全更新,修复了Linux内核发现的执行任云安意代码,拒绝服务等重要漏洞。以下是漏洞详情:
漏洞详情
来源:https://ubuntu.com/security/notices/USN-4879-1
1.CVE-2021-20194 CVSS评分:7.8
Linux内核中的BPF实现确实没有正确验证getockopt B全日PF钩子中的属性。当地人攻击者可能会用它来导致拒绝服务(系统崩溃)
2.CVE-2020-36158 CVSS评分:6.7
Linux内核中的Marvell WiFi-Ex设备驱动程序无法正确验证临时SSID。本地攻击者可以使用此方法导致拒绝服务(系统崩溃)或可能执行任意代码。
受影报2响产品和版本
上述漏洞影响Ubuntu 20.10,Ubuntu 20.04 LTS
解决方案
可以通过将系统更新为以下软件包版本来解决此问题:
Ubuntu 20.10:
linux-image-5.8.0-1024-azure - 5.8.0-1024.26
linux-image-510.8.0-1020-kvm - 5.8.0-1020.22
linux-image-5.8.0-45-generic-lpae - 5.8.0-45.51
linux-image-5.8.0-1017-raspi - 5.8.0-1017.20
linux-image-oracle - 5.8.310.1022.21
linux-image-azure - 5.8.0.1024.24
linux-image-raspi-nolpae - 5.8.0.1017.20
linux-image-oem-20.04 - 5.8.0.45.50
linux-image-5.8.0-1017-ra7:spi-nolpae - 5.8.0-1017.20
linux-image-5.8.0-1022-oracle - 5.8.0-1022.23
linux-image-virtual - 5.8.0.45.50
linux-image-5.8.0-1025-aws - 5.8.0-1025.27
lUbinux-image-gcp - 5.8.0.1024.24
linux-image-5.8.0-45-lowlatency - 5.8.0-45.51
linux-image-raspi - 5.8.0.1017.20
linux-image-gke - 5.8.0.1024.24
liunnux-image-generic-64k - 5.8.0.45.50
linux-image-generic - 5.8.0.45.50
linux-image-aws - 5.8.0.1025.27
linux-image-kvm - 5.8.0.1020.22
linux-image-geneturic-lpae - 5.8.0.45.50
linux-image-5.8.0-45-generic - 5.8.0-45.51
linux-image-5.8.0-45-generic-64k - 5.8.0-45.51
linux-image-5.8.0-1024-gcp - 5.8.0-1 L024.25
linux-image-lowlatency - 5.8.0.45.50
Ubuntu 20.04:
linux-image-virtual-hwe-20.04 - 5.8.0.45.51~20.04.31
linux-image-5.8.0-45-generic-lpae - 5.in8.0-45.51~20.04.1
linux-image-generic-lpae-hwe-20.04 - 5.8.0.45.51~20.04.31
linux-image-5.8.0-45-generic - 5.8.0-45.51~20.04.1+1
linux-image-geneuxric-64k-hwe-20.04 - 5.8.0.45.51~20.04.31
linux-image-5.8.0-45-generic-64k - 5.8.0-45.51~20.04.1+1
linux-image-lowlatency-hwe-20.04 - 5.8.0.45.内核51~20.04.31
linux-image-generic-hwe-20.04 - 5.8.0.45.51~20.04.31
linux-image-5.8.0-45-lowlatency - 5.8.0-45.51~20.04.1+1
查看更多漏洞信息 以及升级请访问官网:
https发现://ubuntu.com/security/cve
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