Linux Distros 未修补的漏洞: CVE-2021-23133

high Nessus 插件 ID 223635

语言：

简介

Linux/Unix 主机上安装的一个或多个程序包存在漏洞，但供应商表示不会修补此漏洞。

描述

Linux/Unix 主机中安装的一个或多个程序包受到一个漏洞影响，而供应商没有提供补丁程序。

- 5.12-rc8 之前的 Linux 内核 SCTP 套接字 (net/sctp/socket.c) 中存在争用情形，可从网络服务上下文或无特权进程造成内核权限升级。如果在没有 sock_net(sk)->sctp.addr_wq_lock 的情况下调用 sctp_destroy_sock，则会从 auto_asconf_splist 列表中删除一个元素，而不会进行任何适当的锁定。如果附加的 BPF_CGROUP_INET_SOCK_CREATE 拒绝创建某些 SCTP 套接字，则具有网络服务权限的攻击者可利用此问题升级到根级权限或直接从非特权用户上下文升级权限。(CVE-2021-23133)

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

解决方案

目前尚未有任何已知的解决方案。

另见

https://access.redhat.com/security/cve/cve-2021-23133

https://ubuntu.com/security/CVE-2021-23133

插件详情

严重性: High

ID: 223635

文件名: unpatched_CVE_2021_23133.nasl

版本: 1.3

类型: local

代理: unix

系列: Misc.

发布时间: 2025/3/4

最近更新时间: 2025/9/2

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

风险信息

VPR

风险因素: High

分数: 7.4

CVSS v2

风险因素: Medium

基本分数: 6.9

时间分数: 5.4

矢量: CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C

CVSS 分数来源: CVE-2021-23133

CVSS v3

风险因素: High

基本分数: 7

时间分数: 6.3

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

时间矢量: CVSS:3.0/E:P/RL:O/RC:C

漏洞信息

CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, p-cpe:/a:redhat:enterprise_linux:kernel-doc, p-cpe:/a:canonical:ubuntu_linux:linux-aws-5.3, p-cpe:/a:centos:centos:kernel-debug-devel, p-cpe:/a:centos:centos:kernel-kdump-devel, p-cpe:/a:centos:centos:kernel-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-hwe, p-cpe:/a:centos:centos:kernel-rt-doc, p-cpe:/a:redhat:enterprise_linux:kernel, p-cpe:/a:centos:centos:kernel-kdump, p-cpe:/a:canonical:ubuntu_linux:linux-aws-5.0, p-cpe:/a:canonical:ubuntu_linux:linux-oem-5.6, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:centos:centos:kernel-abi-whitelists, p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace, p-cpe:/a:redhat:enterprise_linux:kernel-headers, cpe:/o:centos:centos:7, p-cpe:/a:canonical:ubuntu_linux:linux-raspi-realtime, p-cpe:/a:centos:centos:kernel-debug, p-cpe:/a:canonical:ubuntu_linux:linux-azure-fde-5.19, p-cpe:/a:canonical:ubuntu_linux:linux-intel-iot-realtime, p-cpe:/a:canonical:ubuntu_linux:linux-oracle-5.3, p-cpe:/a:canonical:ubuntu_linux:linux-hwe-edge, p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel, p-cpe:/a:canonical:ubuntu_linux:linux-gke-4.15, p-cpe:/a:redhat:enterprise_linux:kernel-rt, p-cpe:/a:centos:centos:perf, p-cpe:/a:centos:centos:kernel-rt-debug-kvm, p-cpe:/a:centos:centos:bpftool, p-cpe:/a:canonical:ubuntu_linux:linux-azure-edge, p-cpe:/a:centos:centos:kernel-rt-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-kdump-devel, p-cpe:/a:redhat:enterprise_linux:kernel-debug, p-cpe:/a:centos:centos:kernel, p-cpe:/a:centos:centos:kernel-rt-trace-devel, p-cpe:/a:canonical:ubuntu_linux:linux-riscv, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug, p-cpe:/a:centos:centos:python-perf, p-cpe:/a:centos:centos:kernel-rt-devel, p-cpe:/a:centos:centos:kernel-bootwrapper, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace-devel, p-cpe:/a:redhat:enterprise_linux:kernel-bootwrapper, p-cpe:/a:canonical:ubuntu_linux:linux-realtime, p-cpe:/a:redhat:enterprise_linux:python-perf, p-cpe:/a:canonical:ubuntu_linux:linux-raspi2, p-cpe:/a:redhat:enterprise_linux:kernel-abi-whitelists, p-cpe:/a:canonical:ubuntu_linux:linux-gcp-edge, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs-devel, p-cpe:/a:centos:centos:kernel-rt-trace-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-rt-doc, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs, p-cpe:/a:redhat:enterprise_linux:perf, p-cpe:/a:canonical:ubuntu_linux:linux-oracle-5.0, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-devel, p-cpe:/a:centos:centos:kernel-headers, p-cpe:/a:redhat:enterprise_linux:bpftool, p-cpe:/a:redhat:enterprise_linux:kernel-rt-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-tools, p-cpe:/a:centos:centos:kernel-tools-libs-devel, p-cpe:/a:canonical:ubuntu_linux:linux-oem, p-cpe:/a:redhat:enterprise_linux:kernel-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-devel, p-cpe:/a:canonical:ubuntu_linux:linux-gcp, p-cpe:/a:centos:centos:kernel-rt-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-azure, p-cpe:/a:centos:centos:kernel-rt, p-cpe:/a:centos:centos:kernel-tools, p-cpe:/a:redhat:enterprise_linux:kernel-kdump, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:centos:centos:kernel-rt-trace, p-cpe:/a:canonical:ubuntu_linux:linux-gcp-5.3, p-cpe:/a:centos:centos:kernel-rt-debug, p-cpe:/a:centos:centos:kernel-doc, p-cpe:/a:canonical:ubuntu_linux:linux-azure-5.3, p-cpe:/a:centos:centos:kernel-tools-libs

必需的 KB 项: Host/OS/identifier, Host/cpu, Host/local_checks_enabled, global_settings/vendor_unpatched

可利用: true

易利用性: Exploits are available

漏洞发布日期: 2021/4/13

参考资料信息

CVE: CVE-2021-23133