低危 xscreensaver_project xscreensaver 未进行输入大小检查的缓冲区拷贝（传统缓冲区溢出）
CVE编号
CVE-2021-34557利用情况
暂无补丁情况
官方补丁披露时间
2021-06-11漏洞描述
XScreenSaver 5.45 can be bypassed if the machine has more than ten disconnectable video outputs. A buffer overflow in update_screen_layout() allows an attacker to bypass the standard screen lock authentication mechanism by crashing XScreenSaver. The attacker must physically disconnect many video outputs.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。受影响软件情况
| # | 类型 | 厂商 | 产品 | 版本 | 影响面 | ||||
| 1 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 运行在以下环境 | |||||||||
| 应用 | xscreensaver_project | xscreensaver | 5.45 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.16 | xscreensaver | * | Up to (excluding) 6.02-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.17 | xscreensaver | * | Up to (excluding) 6.02-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.18 | xscreensaver | * | Up to (excluding) 6.02-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_edge | xscreensaver | * | Up to (excluding) 6.02-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | xscreensaver | * | Up to (including) 5.42+dfsg1-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | xscreensaver | * | Up to (excluding) 5.45+dfsg1-2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | xscreensaver | * | Up to (excluding) 5.45+dfsg1-2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | xscreensaver | * | Up to (including) 5.36-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | xscreensaver | * | Up to (excluding) 5.45+dfsg1-2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_33 | xscreensaver-gl-base | * | Up to (excluding) 5.45-2.fc33 | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.3 | xscreensaver-data | * | Up to (excluding) 5.44-150000.5.6.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP5 | xscreensaver-data | * | Up to (excluding) 5.22-8.3.1 | |||||
- 攻击路径 物理
- 攻击复杂度 容易
- 权限要求 无需权限
- 影响范围 有限影响
- EXP成熟度 N/A
- 补丁情况 官方补丁
- 数据保密性 无影响
- 数据完整性 无影响
- 服务器危害 服务器失陷
- 全网数量 N/A
| CWE-ID | 漏洞类型 |
| CWE-120 | 未进行输入大小检查的缓冲区拷贝（传统缓冲区溢出） |
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