漏洞简介

Twitter上Nikolenko发推表示ubuntu最新版本存在一个本地提权漏洞,并且提供了EXP下载地址,该漏洞在老版本中已经完成修复,但是在ubuntu16.04版本依旧可以被利用。

影响范围

目前已知范围

ubuntu 16.04.4

漏洞复现

使用本人在日本云平台服务商conoha.jp上的主机测试,亲测可用。

QQ20180316-181627@2x

POC下载链接:upstream44.c.zip

修复方案

目前暂未有明确的补丁升级方案。 建议用户在评估风险后,通过修改内核参数限制普通用户使用bpf(2)系统调用:

echo 1 > /proc/sys/kernel/unprivileged_bpf_disabled

ubuntu官网暂时没有提供修复方案,补丁更新请关注ubuntu官方漏洞公告:https://usn.ubuntu.com/

已有 1 条评论

    1. Octaviodek Octaviodek 2018-06-16 02:36:39

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