摘要:
screen security update
安全等级: High
公告ID: KylinSec-SA-2025-2623
发布日期: 2025年6月7日
Screen is a full-screen window manager that multiplexes
a physical terminal between several processes,typically
interactive shells.
Security Fix(es):
For a short time they PTY is set to mode 666, allowing any user on the system to connect to the screen session.(CVE-2025-46802)
A minor information leak when running Screen with setuid-root privileges allows unprivileged users to deduce information about a path that would otherwise not be available.
Affected are older Screen versions, as well as version 5.0.0.(CVE-2025-46804)
Screen version 5.0.0 and older version 4 releases have a TOCTOU race potentially allowing to send SIGHUP, SIGCONT to privileged processes when installed setuid-root.(CVE-2025-46805)
| cve名称 | 产品 | 组件 | 是否受影响 |
|---|---|---|---|
| CVE-2025-46802 | KY3.5.3 | screen | Fixed |
| CVE-2025-46802 | V6 | screen | Fixed |
| CVE-2025-46802 | KY3.4-5A | screen | Fixed |
| CVE-2025-46805 | KY3.5.3 | screen | Fixed |
| CVE-2025-46805 | V6 | screen | Fixed |
| CVE-2025-46805 | KY3.4-5A | screen | Fixed |
| CVE-2025-46804 | KY3.5.3 | screen | Fixed |
| CVE-2025-46804 | V6 | screen | Fixed |
| CVE-2025-46804 | KY3.4-5A | screen | Fixed |
| 软件名称 | 架构 | 版本号 |
|---|---|---|
| screen-help | noarch | 4.8.0-7.kb1.ky3_4 |
| screen | x86_64 | 4.8.0-7.kb1.ky3_4 |
| screen | aarch64 | 4.8.0-7.kb1.ky3_4 |
| 软件名称 | 架构 | 版本号 |
|---|---|---|
| screen-help | noarch | 4.9.0-3.ks6 |
| screen | x86_64 | 4.9.0-3.ks6 |
| screen | aarch64 | 4.9.0-3.ks6 |
| 软件名称 | 架构 | 版本号 |
|---|---|---|
| screen-help | noarch | 4.9.0-3.ky3_5 |
| screen | x86_64 | 4.9.0-3.ky3_5 |
| screen | aarch64 | 4.9.0-3.ky3_5 |
方法一：下载安装包进行升级安装
1、通过下载链接下载需要升级的升级包保存，如 xxx.rpm
2、通过rpm命令升级，如 rpm -Uvh xxx.rpm
方法二：通过软件源进行升级安装
1、保持能够连接上互联网
2、通过yum命令升级指定的包，如 yum install 包名
