低危 xmlsoft libxml2 dtd中递归实体索引的不恰当限制（xml实体扩展）
CVE编号
CVE-2021-3541利用情况
暂无补丁情况
官方补丁披露时间
2021-07-10漏洞描述
A flaw was found in libxml2. Exponential entity expansion attack its possible bypassing all existing protection mechanisms and leading to denial of service.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=1950515 | |
| https://security.netapp.com/advisory/ntap-20210805-0007/ | |
| https://www.oracle.com/security-alerts/cpujan2022.html |
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 | redhat | jboss_core_services | - | - | |||||
| 运行在以下环境 | |||||||||
| 应用 | xmlsoft | libxml2 | * | Up to (excluding) 2.9.11 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.11 | libxml2 | * | Up to (excluding) 2.9.12-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.12 | libxml2 | * | Up to (excluding) 2.9.12-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.13 | libxml2 | * | Up to (excluding) 2.9.11-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.14 | qt5-qtwebengine | * | Up to (excluding) 5.15.3_git20211112-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.15 | libxml2 | * | Up to (excluding) 5.15.3_git20211112-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.16 | libxml2 | * | Up to (excluding) 2.9.11-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.17 | libxml2 | * | Up to (excluding) 5.15.3_git20211112-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.18 | libxml2 | * | Up to (excluding) 5.15.3_git20211112-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_edge | libxml2 | * | Up to (excluding) 5.15.3_git20211112-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_2 | libxml2 | * | Up to (excluding) 2.9.1-6.amzn2.5.3 | |||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_AMI | libxml2 | * | Up to (excluding) 2.9.1-6.6.42.amzn1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | anolis_os_8 | libxml2 | * | Up to (excluding) 2.9.7-9.0.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | centos_8 | libxml2 | * | Up to (excluding) 2.9.7-9.el8_4.2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | libxml2 | * | Up to (excluding) 2.9.4+dfsg1-7+deb10u2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | libxml2 | * | Up to (excluding) 2.9.10+dfsg-6.7 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | libxml2 | * | Up to (excluding) 2.9.10+dfsg-6.7 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | libxml2 | * | Up to (excluding) 2.9.4+dfsg1-2.2+deb9u5 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | libxml2 | * | Up to (excluding) 2.9.10+dfsg-6.7 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_33 | python3-libxml2-debuginfo | * | Up to (excluding) 2.9.12-4.fc33 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_34 | python3-libxml2-debuginfo | * | Up to (excluding) 5.15.8-2.fc34 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_35 | qt5-qtwebengine-examples | * | Up to (excluding) 5.15.8-2.fc35 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10SP1 | libxml2 | * | Up to (excluding) 2.9.10-29.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10SP2 | libxml2 | * | Up to (excluding) 2.9.10-29.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10SP1 | libxml2 | * | Up to (excluding) 2.9.10-29.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10SP2 | libxml2 | * | Up to (excluding) 2.9.10-29.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.2 | python2-libxml2-python | * | Up to (excluding) 2.9.7-lp152.10.15.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.3 | python2-libxml2-python | * | Up to (excluding) 2-2.9.7-3.37.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.4 | python3-libxml2-python | * | Up to (excluding) 2.9.7-150000.3.57.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_8 | oraclelinux-release | * | Up to (excluding) 2.9.7-9.0.1.el8_4.2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | redhat_8 | libxml2 | * | Up to (excluding) 2.9.7-9.el8_4.2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP5 | libxml2-2-32bit | * | Up to (excluding) 2-2.9.4-46.46.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_20.04 | libxml2 | * | Up to (excluding) 2.9.10+dfsg-5ubuntu0.20.04.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_21.04 | libxml2 | * | Up to (excluding) 2.9.10+dfsg-6.3ubuntu0.1 | |||||
- 攻击路径 本地
- 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 DoS
- 全网数量 N/A
| CWE-ID | 漏洞类型 |
| CWE-776 | DTD中递归实体索引的不恰当限制（XML实体扩展） |
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