RHEL 8:squid:4 (RHSA-2020: 4743)

critical Nessus 插件 ID 142412

简介

远程 Red Hat 主机缺少一个或多个安全更新。

描述

远程 Redhat Enterprise Linux 8 主机上安装的程序包受到 RHSA-2020: 4743 公告中提及的多个漏洞的影响。

- squid:请求中的不当输入验证允许代理操控 (CVE-2019-12520)

- squid:addStackElement 中的差一错误允许堆缓冲区溢出和崩溃 (CVE-2019-12521)

- squid:URI 处理器中的输入验证不正确 (CVE-2019-12523)

- squid:url_regex 中的不当访问限制可能导致安全绕过 (CVE-2019-12524)

- squid:URN 处理中的堆溢出问题 (CVE-2019-12526)

- squid:FTP 网关中存在信息泄露问题 (CVE-2019-12528)

- squid:Proxy-Authorization 标头中的越界读取可造成 DoS (CVE-2019-12529)

- squid:cachemgr.cgi 中的拒绝服务 (CVE-2019-12854)

- squid:URI 处理器中的缓冲区溢出 (CVE-2019-18676)

- squid:处理 HTTP 请求过程中发生跨站请求伪造问题 (CVE-2019-18677)

- squid:处理 HTTP 消息过程中发生 HTTP 请求拆分问题 (CVE-2019-18678)

- squid:HTTP 摘要式身份验证中发生信息泄露问题 (CVE-2019-18679)

- squid:未正确处理 cachemgr.cgi 的主机参数中的 HTML 可导致不安全行为 (CVE-2019-18860)

- squid:TLS 握手中的 DoS (CVE-2020-14058)

- squid:针对 HTTP 缓存的请求走私和中毒攻击 (CVE-2020-15049)

- squid:不当输入验证可导致 DoS (CVE-2020-24606)

- squid:HTTP 请求处理过程中存在不当输入验证问题 (CVE-2020-8449)

- squid:反向代理配置中存在缓冲区溢出 (CVE-2020-8450)

请注意,Nessus 尚未测试这些问题,而是只依据应用程序自我报告的版本号进行判断。

解决方案

更新受影响的 libecap、libecap-devel 和/或 squid 程序包。

另见

https://access.redhat.com/security/cve/CVE-2019-12520

https://access.redhat.com/security/cve/CVE-2019-12521

https://access.redhat.com/security/cve/CVE-2019-12523

https://access.redhat.com/security/cve/CVE-2019-12524

https://access.redhat.com/security/cve/CVE-2019-12526

https://access.redhat.com/security/cve/CVE-2019-12528

https://access.redhat.com/security/cve/CVE-2019-12529

https://access.redhat.com/security/cve/CVE-2019-12854

https://access.redhat.com/security/cve/CVE-2019-18676

https://access.redhat.com/security/cve/CVE-2019-18677

https://access.redhat.com/security/cve/CVE-2019-18678

https://access.redhat.com/security/cve/CVE-2019-18679

https://access.redhat.com/security/cve/CVE-2019-18860

https://access.redhat.com/security/cve/CVE-2020-8449

https://access.redhat.com/security/cve/CVE-2020-8450

https://access.redhat.com/security/cve/CVE-2020-14058

https://access.redhat.com/security/cve/CVE-2020-15049

https://access.redhat.com/security/cve/CVE-2020-24606

https://access.redhat.com/errata/RHSA-2020:4743

https://bugzilla.redhat.com/1730523

https://bugzilla.redhat.com/1730528

https://bugzilla.redhat.com/1770349

https://bugzilla.redhat.com/1770356

https://bugzilla.redhat.com/1770360

https://bugzilla.redhat.com/1770365

https://bugzilla.redhat.com/1770371

https://bugzilla.redhat.com/1770375

https://bugzilla.redhat.com/1798534

https://bugzilla.redhat.com/1798540

https://bugzilla.redhat.com/1798552

https://bugzilla.redhat.com/1817121

https://bugzilla.redhat.com/1827558

https://bugzilla.redhat.com/1827562

https://bugzilla.redhat.com/1827570

https://bugzilla.redhat.com/1852550

https://bugzilla.redhat.com/1852554

https://bugzilla.redhat.com/1871705

插件详情

严重性: Critical

ID: 142412

文件名: redhat-RHSA-2020-4743.nasl

版本: 1.9

类型: local

代理: unix

发布时间: 2020/11/4

最近更新时间: 2023/5/25

支持的传感器: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

风险信息

VPR

风险因素: Medium

分数: 5.9

CVSS v2

风险因素: High

基本分数: 7.5

时间分数: 5.5

矢量: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS 分数来源: CVE-2020-8450

CVSS v3

风险因素: Critical

基本分数: 9.8

时间分数: 8.5

矢量: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

时间矢量: CVSS:3.0/E:U/RL:O/RC:C

CVSS 分数来源: CVE-2019-12526

漏洞信息

CPE: cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:rhel_aus:8.4, cpe:/o:redhat:rhel_aus:8.6, cpe:/o:redhat:rhel_e4s:8.4, cpe:/o:redhat:rhel_e4s:8.6, cpe:/o:redhat:rhel_eus:8.4, cpe:/o:redhat:rhel_eus:8.6, cpe:/o:redhat:rhel_tus:8.4, cpe:/o:redhat:rhel_tus:8.6, p-cpe:/a:redhat:enterprise_linux:libecap, p-cpe:/a:redhat:enterprise_linux:libecap-devel, p-cpe:/a:redhat:enterprise_linux:squid

必需的 KB 项: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

易利用性: No known exploits are available

补丁发布日期: 2020/11/4

漏洞发布日期: 2019/7/11

参考资料信息

CVE: CVE-2019-12520, CVE-2019-12521, CVE-2019-12523, CVE-2019-12524, CVE-2019-12526, CVE-2019-12528, CVE-2019-12529, CVE-2019-12854, CVE-2019-18676, CVE-2019-18677, CVE-2019-18678, CVE-2019-18679, CVE-2019-18860, CVE-2020-14058, CVE-2020-15049, CVE-2020-24606, CVE-2020-8449, CVE-2020-8450

CWE: 119, 122, 20, 200, 400, 444, 676, 79

RHSA: 2020:4743