Signal Handler Race Condition (CVE-2024-6409)
CVE编号
CVE-2024-6409利用情况
暂无补丁情况
N/A披露时间
2024-07-08漏洞描述
A signal handler race condition vulnerability was found in OpenSSH's server (sshd), where a client does not authenticate within LoginGraceTime seconds (120 by default, 600 in old OpenSSH versions), then sshd's SIGALRM handler is called asynchronously. However, this signal handler calls various functions that are not async-signal-safe, for example, syslog(). This issue leaves it vulnerable to a signal handler race condition on the cleanup_exit() function, which introduces the same vulnerability as CVE-2024-6387 in the unprivileged child of the SSHD server.解决建议
建议您更新当前系统或软件至最新版，完成漏洞的修复。
参考链接 |
|
|---|---|
| https://access.redhat.com/security/cve/CVE-2024-6409 |
- 攻击路径 网络
- 攻击复杂度 高
- 权限要求 无
- 影响范围 未更改
- 用户交互 无
- 可用性 高
- 保密性 低
- 完整性 低
| CWE-ID | 漏洞类型 |
| CWE-364 | 信号处理例程中的竞争条件 |
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