CVE-2024-6387: OpenSSH 服务器(sshd)中发现安全回归(CVE-2006-5051),存在竞态条件(regreSSHion)
摘要
在 OpenSSH 的服务器(sshd)中发现了一个安全回归(CVE-2006-5051)。存在一个竞态条件,可能导致 sshd 以不安全的方式处理某些信号。未认证的远程攻击者可能通过在设定时间内未能完成认证来触发该条件。
为什么重要
HIGH 严重性,CVSS 8.1 。
当前状态
- 漏洞状态: 未列入 CISA KEV
- 最近情报更新: 2026-10-15 · 来源: NVD
实体活动时间线
- 2024-07-01 — NVD 发布/披露
- 2026-10-15 — 情报记录更新(NVD 同步)
严重性
HIGH
CVSS 评分: 8.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
来源归属
来源: NVD · 更新: 2026-10-15T03:17:04.790 · 置信度: high
影响
基于 CVSS 向量: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H — 请通过官方向量文档评估机密性、完整性与可用性影响。
受影响软件
修复
将受影响软件升级至上述修复版本。在暴露系统尚未修补前,请应用厂商补丁并持续跟踪安全公告。
来源与证据
- https://access.redhat.com/errata/RHSA-2024:4312
- https://access.redhat.com/errata/RHSA-2024:4340
- https://access.redhat.com/errata/RHSA-2024:4389
- https://access.redhat.com/errata/RHSA-2024:4469
- https://access.redhat.com/errata/RHSA-2024:4474
- https://access.redhat.com/errata/RHSA-2024:4479
- https://access.redhat.com/errata/RHSA-2024:4484
- https://access.redhat.com/security/cve/CVE-2024-6387
- https://bugzilla.redhat.com/show_bug.cgi?id=2294604
- https://santandersecurityresearch.github.io/blog/sshing_the_masses.html
- https://www.openssh.com/txt/release-9.8
- https://www.qualys.com/2024/07/01/cve-2024-6387/regresshion.txt
- http://seclists.org/fulldisclosure/2024/Jul/18
- http://seclists.org/fulldisclosure/2024/Jul/19
- http://seclists.org/fulldisclosure/2024/Jul/20
- http://www.openwall.com/lists/oss-security/2024/07/01/12
- http://www.openwall.com/lists/oss-security/2024/07/01/13
- http://www.openwall.com/lists/oss-security/2024/07/02/1
- http://www.openwall.com/lists/oss-security/2024/07/03/1
- http://www.openwall.com/lists/oss-security/2024/07/03/11
- http://www.openwall.com/lists/oss-security/2024/07/03/2
- http://www.openwall.com/lists/oss-security/2024/07/03/3
- http://www.openwall.com/lists/oss-security/2024/07/03/4
- http://www.openwall.com/lists/oss-security/2024/07/03/5
- http://www.openwall.com/lists/oss-security/2024/07/04/1
- http://www.openwall.com/lists/oss-security/2024/07/04/2
- http://www.openwall.com/lists/oss-security/2024/07/08/2
- http://www.openwall.com/lists/oss-security/2024/07/08/3
- http://www.openwall.com/lists/oss-security/2024/07/09/2
- http://www.openwall.com/lists/oss-security/2024/07/09/5
- http://www.openwall.com/lists/oss-security/2024/07/10/1
- http://www.openwall.com/lists/oss-security/2024/07/10/2
- http://www.openwall.com/lists/oss-security/2024/07/10/3
- http://www.openwall.com/lists/oss-security/2024/07/10/4
- http://www.openwall.com/lists/oss-security/2024/07/10/6
- http://www.openwall.com/lists/oss-security/2024/07/11/1
- http://www.openwall.com/lists/oss-security/2024/07/11/3
- http://www.openwall.com/lists/oss-security/2024/07/23/4
- http://www.openwall.com/lists/oss-security/2024/07/23/6
- http://www.openwall.com/lists/oss-security/2024/07/28/2
- http://www.openwall.com/lists/oss-security/2024/07/28/3
- https://access.redhat.com/errata/RHSA-2024:4312
- https://access.redhat.com/errata/RHSA-2024:4340
- https://access.redhat.com/errata/RHSA-2024:4389
- https://access.redhat.com/errata/RHSA-2024:4469
- https://access.redhat.com/errata/RHSA-2024:4474
- https://access.redhat.com/errata/RHSA-2024:4479
- https://access.redhat.com/errata/RHSA-2024:4484
- https://access.redhat.com/security/cve/CVE-2024-6387
- https://archlinux.org/news/the-sshd-service-needs-to-be-restarted-after-upgrading-to-openssh-98p1/
- https://arstechnica.com/security/2024/07/regresshion-vulnerability-in-openssh-gives-attackers-root-on-linux/
- https://blog.qualys.com/vulnerabilities-threat-research/2024/07/01/regresshion-remote-unauthenticated-code-execution-vulnerability-in-openssh-server
- https://bugzilla.redhat.com/show_bug.cgi?id=2294604
- https://explore.alas.aws.amazon.com/CVE-2024-6387.html
- https://forum.vmssoftware.com/viewtopic.php?f=8&t=9132
- https://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2024-002.txt.asc
- https://github.com/AlmaLinux/updates/issues/629
- https://github.com/Azure/AKS/issues/4379
- https://github.com/PowerShell/Win32-OpenSSH/discussions/2248
- https://github.com/PowerShell/Win32-OpenSSH/issues/2249
- https://github.com/microsoft/azurelinux/issues/9555
- https://github.com/openela-main/openssh/commit/e1f438970e5a337a17070a637c1b9e19697cad09
- https://github.com/oracle/oracle-linux/issues/149
- https://github.com/rapier1/hpn-ssh/issues/87
- https://github.com/zgzhang/cve-2024-6387-poc
- https://lists.almalinux.org/archives/list/[email protected]/thread/23BF5BMGFVEVUI2WNVAGMLKT557EU7VY/
- https://lists.mindrot.org/pipermail/openssh-unix-announce/2024-July/000158.html
- https://lists.mindrot.org/pipermail/openssh-unix-dev/2024-July/041431.html
- https://news.ycombinator.com/item?id=40843778
- https://packetstorm.news/files/id/190587/
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2024-0010
- https://santandersecurityresearch.github.io/blog/sshing_the_masses.html
- https://security-tracker.debian.org/tracker/CVE-2024-6387
- https://security.netapp.com/advisory/ntap-20240701-0001/
- https://sig-security.rocky.page/issues/CVE-2024-6387/
- https://stackdiary.com/openssh-race-condition-in-sshd-allows-remote-code-execution/
- https://support.apple.com/kb/HT214118
- https://support.apple.com/kb/HT214119
- https://support.apple.com/kb/HT214120
- https://ubuntu.com/security/CVE-2024-6387
- https://ubuntu.com/security/notices/USN-6859-1
- https://www.akamai.com/blog/security-research/2024-openssh-vulnerability-regression-what-to-know-and-do
- https://www.arista.com/en/support/advisories-notices/security-advisory/19904-security-advisory-0100
- https://www.exploit-db.com/exploits/52269
- https://www.freebsd.org/security/advisories/FreeBSD-SA-24:04.openssh.asc
- https://www.openssh.com/txt/release-9.8
- https://www.qualys.com/2024/07/01/cve-2024-6387/regresshion.txt
- https://www.splunk.com/en_us/blog/security/cve-2024-6387-regresshion-vulnerability.html
- https://www.suse.com/security/cve/CVE-2024-6387.html
- https://www.theregister.com/2024/07/01/regresshion_openssh/
- https://www.vicarius.io/vsociety/posts/regresshion-an-openssh-regression-error-cve-2024-6387
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- https://cert-portal.siemens.com/productcert/html/ssa-446545.html
导出威胁情报
下载符合 OASIS STIX 2.1 规范的威胁情报包(JSON),可导入 MISP / OpenCTI 等 TAXII 平台
开始调查
从阅读转向调查 CVE-2024-6387: OpenSSH 服务器(sshd)中发现安全回归(CVE-2006-5051),存在竞态条件(regreSSHion)。工作区是结构化的分析界面——不是聊天——组织为:
- 问题 — 你需要了解 CVE-2024-6387: OpenSSH 服务器(sshd)中发现安全回归(CVE-2006-5051),存在竞态条件(regreSSHion) 的什么?
- 证据 — 与可验证来源对应的断言。
- 时间线 — 按时间顺序排列的事件。
- 相关实体 — CVE、威胁行为体、攻击活动、恶意软件链接。
- 来源 — NVD、CISA KEV、MITRE ATT&CK、厂商公告。
- 笔记 — 你自己的观察与工作假设。
AI 辅助仅限于摘要、解释与建议相关证据。AI 绝不完成你的调查、修改实体关系或生成事实——所有已发布分析均经人工复核。
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