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云安全日报210803:红帽HTTP加速器发现请求走私攻击漏洞,需要尽快升级
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简介...
Varnish Cache是一个高性能的HTTP加速器。它将网页存储在内存中,因此网络服务器不必一遍又一遍地创建相同的网页,从而显着提高网站速度。
8月2日,RedHat发布了安全更新,修复了红帽Varnish HTTP加速器中发现的请求走私攻击漏洞(HTTP请求走私是一种干扰网站处理HTTP请求序列方式的技术,使攻击者可以绕过安全控制云安,未经授权访问敏感数据并直接危害其他应用程序用户)。以下是漏洞详情:
漏洞详情
来源:https://access.redhat.com/errata/RHSA-2021:2988
CVE-2021-36740 CVSS评分:8.1 严重程度:高
在Varnish中发现了一个漏洞,启用HTTP/2的Varnish缓存允许通过POST请求的大型Conte全日nt-Length标头进行请求走私和VCL授权绕过。此漏洞的最大威胁是机密性、完整性和系统可用性。
受影响产品和版本
Red Hat Enterprise Linux for x86_64 8 x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.4 x86_64
Red Hat Enterpri报2se Linux for x86_64 - Extended Update Support 8.2 x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.1 x86_64
Red Hat Enterprise Linux Server - AUS 8.4 x86_64
Red Hat Enterprise Li10nux Server - AUS 8.2 x86_64
Red Hat Enterprise Linux for IBM z Systems 8 s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.4 s390x
Red Hat Enterprise Linux for IBM z Systems - Exte80nded Update Support 8.2 s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.1 s390x
Red Hat Enterprise Linux for Power, little endian 8 ppc64le
Red Hat Enterprise Linux for Power,3: little endian - Extended Update Support 8.4 ppc64le
Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.2 ppc64le
Red Hat Enterprise Linux for Power, little endian - Extended Up红帽date Support 8.1 ppc64le
Red Hat Enterprise Linux Server - TUS 8.4 x86_64
Red Hat Enterprise Linux Server - TUS 8.2 x86_64
Red Hat Enterprise Linux for ARM 64 8 aarch64
Red Hat Enterprise Linux for ARM 64 - ExtHTended Update Support 8.4 aarch64
Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.2 aarch64
Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.1 aarch64
Red Hat Enterprise LTPinux Server (for IBM Power LE) - Update Services for SAP Solutions 8.4 ppc64le
Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions 8.2 ppc64le
Red Hat Enterprise Linux Se加速rver (for IBM Power LE) - Update Services for SAP Solutions 8.1 ppc64le
Red Hat Enterprise Linux Server - Update Services for SAP Solutions 8.4 x86_64
Red Hat Enterprise Linux Server - Update Services for器发 SAP Solutions 8.2 x86_64
Red Hat Enterprise Linux Server - Update Services for SAP Solutions 8.1 x86_64
解决方案
Varnish:6 模块的更新现在可用于红帽企业 Linux 8、红帽企业 Linux 8.1 扩展更新支持和红帽企业 Linux 8.2 扩展更新支持。
有关如何应用此现请更新(包括本公告中描述的更改)的详细信息,请参阅:
https://access.redhat.com/articles/11258
查看更多漏洞信息 以及升级请访问官网:
https://access.redhat.com/security/security-updates/#/security-advisories
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