低危 avahi avahi 空指针解引用
CVE编号
CVE-2021-3502利用情况
暂无补丁情况
官方补丁披露时间
2021-05-07漏洞描述
A flaw was found in avahi 0.8-5. A reachable assertion is present in avahi_s_host_name_resolver_start function allowing a local attacker to crash the avahi service by requesting hostname resolutions through the avahi socket or dbus methods for invalid hostnames. The highest threat from this vulnerability is to the service availability.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://bugzilla.redhat.com/show_bug.cgi?id=1946914 | |
| https://github.com/lathiat/avahi/issues/338 |
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 | avahi | avahi | 0.8-5 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.18 | avahi | * | Up to (excluding) 0.8-r5 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_edge | avahi | * | Up to (excluding) 0.8-r5 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | avahi | * | Up to (excluding) 0.7-4+deb10u1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | avahi | * | Up to (excluding) 0.8-5+deb11u1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | avahi | * | Up to (excluding) 0.8-6 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | avahi | * | Up to (excluding) 0.8-6 | |||||
| 运行在以下环境 | |||||||||
| 系统 | redhat_9 | avahi | * | Up to (excluding) 0.8-15.el9 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_21.04 | avahi | * | Up to (excluding) 0.8-5ubuntu3.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_21.10 | avahi | * | Up to (excluding) 0.8-5ubuntu4 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_22.04 | avahi | * | Up to (excluding) 0.8-5ubuntu4 | |||||
- 攻击路径 本地
- 攻击复杂度 容易
- 权限要求 普通权限
- 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-476 | 空指针解引用 |
| CWE-617 | 可达断言 |
Exp相关链接
版权声明
本站原创文章转载请注明文章出处及链接，谢谢合作！
评论