CVE编号
CVE-2018-20843利用情况
暂无补丁情况
官方补丁披露时间
2019-06-25漏洞描述
在2.2.7之前的Expat中的libexpat中,包含包含大量冒号的XML名称的XML输入可能使XML解析器在处理时消耗大量RAM和CPU资源(足以用于拒绝服务攻击) 。<br>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 |
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http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00039.html | |
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5226 | |
https://github.com/libexpat/libexpat/blob/R_2_2_7/expat/Changes | |
https://github.com/libexpat/libexpat/issues/186 | |
https://github.com/libexpat/libexpat/pull/262 | |
https://github.com/libexpat/libexpat/pull/262/commits/11f8838bf99ea0a6f0b76f9... | |
https://lists.debian.org/debian-lts-announce/2019/06/msg00028.html | |
https://lists.fedoraproject.org/archives/list/[email protected]... | |
https://lists.fedoraproject.org/archives/list/[email protected]... | |
https://seclists.org/bugtraq/2019/Jun/39 | |
https://security.gentoo.org/glsa/201911-08 | |
https://security.netapp.com/advisory/ntap-20190703-0001/ | |
https://support.f5.com/csp/article/K51011533 | |
https://usn.ubuntu.com/4040-1/ | |
https://usn.ubuntu.com/4040-2/ | |
https://www.debian.org/security/2019/dsa-4472 | |
https://www.oracle.com/security-alerts/cpuapr2020.html | |
https://www.oracle.com/security-alerts/cpuApr2021.html | |
https://www.oracle.com/security-alerts/cpuoct2020.html | |
https://www.oracle.com/security-alerts/cpuoct2021.html | |
https://www.tenable.com/security/tns-2021-11 |
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 | libexpat | expat | * |
Up to (excluding) 2.2.7 |
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运行在以下环境 | |||||||||
系统 | alibaba_cloud_linux_2.1903 | expat | * |
Up to (excluding) 2.1.0-12.1.al7 |
|||||
运行在以下环境 | |||||||||
系统 | alpine_3.10 | expat | * |
Up to (excluding) 2.2.7-r0 |
|||||
运行在以下环境 | |||||||||
系统 | alpine_3.11 | expat | * |
Up to (excluding) 2.2.7-r0 |
|||||
运行在以下环境 | |||||||||
系统 | alpine_3.12 | expat | * |
Up to (excluding) 2.2.7-r0 |
|||||
运行在以下环境 | |||||||||
系统 | alpine_3.13 | expat | * |
Up to (excluding) 2.2.7-r0 |
|||||
运行在以下环境 | |||||||||
系统 | alpine_3.14 | expat | * |
Up to (excluding) 2.2.7-r0 |
|||||
运行在以下环境 | |||||||||
系统 | alpine_3.15 | expat | * |
Up to (excluding) 2.2.7-r0 |
|||||
运行在以下环境 | |||||||||
系统 | alpine_3.7 | expat | * |
Up to (excluding) 2.2.7-r0 |
|||||
运行在以下环境 | |||||||||
系统 | alpine_3.8 | expat | * |
Up to (excluding) 2.2.7-r0 |
|||||
运行在以下环境 | |||||||||
系统 | alpine_3.9 | expat | * |
Up to (excluding) 2.2.7-r0 |
|||||
运行在以下环境 | |||||||||
系统 | alpine_edge | expat | * |
Up to (excluding) 2.2.7-r0 |
|||||
运行在以下环境 | |||||||||
系统 | amazon_2 | expat | * |
Up to (excluding) 2.1.0-12.amzn2 |
|||||
运行在以下环境 | |||||||||
系统 | amazon_AMI | expat | * |
Up to (excluding) 2.1.0-12.24.amzn1 |
|||||
运行在以下环境 | |||||||||
系统 | centos_8 | expat | * |
Up to (excluding) 2.2.5-4.el8 |
|||||
运行在以下环境 | |||||||||
系统 | debian_8 | expat | * |
Up to (excluding) 2.1.0-6+deb8u6 |
|||||
运行在以下环境 | |||||||||
系统 | debian_9 | expat | * |
Up to (excluding) 2.2.0-2+deb9u2 |
|||||
运行在以下环境 | |||||||||
系统 | fedora_29 | expat | * |
Up to (excluding) 2.2.7-1.fc29 |
|||||
运行在以下环境 | |||||||||
系统 | fedora_30 | expat | * |
Up to (excluding) 2.2.7-1.fc30 |
|||||
运行在以下环境 | |||||||||
系统 | opensuse_Leap_15.0 | expat | * |
Up to (excluding) 2.2.5-lp151.3.3.1 |
|||||
运行在以下环境 | |||||||||
系统 | opensuse_Leap_15.1 | expat | * |
Up to (excluding) 2.2.5-lp151.3.3.1 |
|||||
运行在以下环境 | |||||||||
系统 | oracle_7 | expat | * |
Up to (excluding) 2.1.0-12.el7 |
|||||
运行在以下环境 | |||||||||
系统 | oracle_8 | expat | * |
Up to (excluding) 2.2.5-4.el8 |
|||||
运行在以下环境 | |||||||||
系统 | redhat_8 | expat | * |
Up to (excluding) 2.2.5-4.el8 |
|||||
运行在以下环境 | |||||||||
系统 | suse_12_SP4 | expat | * |
Up to (excluding) 2.1.0-21.6.1 |
|||||
运行在以下环境 | |||||||||
系统 | ubuntu_14.04 | expat | * |
Up to (excluding) 2.1.0-4ubuntu1.4+esm1 |
|||||
运行在以下环境 | |||||||||
系统 | ubuntu_16.04 | expat | * |
Up to (excluding) 2.1.0-7ubuntu0.16.04.4 |
|||||
运行在以下环境 | |||||||||
系统 | ubuntu_18.04 | expat | * |
Up to (excluding) 2.2.5-3ubuntu0.1 |
|||||
运行在以下环境 | |||||||||
系统 | ubuntu_20.04 | expat | * |
Up to (excluding) 2.2.6-2 |
|||||
运行在以下环境 | |||||||||
系统 | ubuntu_21.04 | expat | * |
Up to (excluding) 2.2.6-2 |
|||||
- 攻击路径 远程
- 攻击复杂度 复杂
- 权限要求 无需权限
- 影响范围 有限影响
- EXP成熟度 未验证
- 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 无影响
- 全网数量 100
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