中危 Expat 资源管理错误漏洞
CVE编号
CVE-2021-45960利用情况
暂无补丁情况
官方补丁披露时间
2022-01-02漏洞描述
Expat是一款使用C语言编写的快速流式XML解析器。 Expat 存在安全漏洞，该漏洞源于在2.4.3之前的Expat(又名libexpat)中，xmlparse.c中的storeAtts函数左移29(或更多)位可能会导致realloc错误行为(例如，分配的字节太少，或只释放内存)。解决建议
目前厂商已发布升级补丁以修复漏洞，详情请关注厂商主页：https://bugzilla.mozilla.org/show_bug.cgi?id=1217609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_project | libexpat | * | Up to (excluding) 2.4.3 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alibaba_cloud_linux_2.1903 | expat-static | * | Up to (excluding) 2.1.0-14.1.al7 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.12 | expat | * | Up to (excluding) 2.2.10-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.13 | expat | * | Up to (excluding) 2.2.10-r2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.14 | expat | * | Up to (excluding) 2.4.3-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.15 | expat | * | Up to (excluding) 2.4.3-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.16 | expat | * | Up to (excluding) 2.4.3-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.17 | expat | * | Up to (excluding) 2.4.3-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.18 | expat | * | Up to (excluding) 2.4.3-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_edge | expat | * | Up to (excluding) 2.4.3-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_2 | expat | * | Up to (excluding) 2.1.0-12.amzn2.0.4 | |||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_2022 | expat | * | Up to (excluding) 2.4.3-1.amzn2022 | |||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_2023 | expat | * | Up to (excluding) 2.5.0-1.amzn2023.0.2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_AMI | expat | * | Up to (excluding) 2.1.0-12.28.amzn1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | anolis_os_7 | expat-devel | * | Up to (excluding) 2.1.0-14 | |||||
| 运行在以下环境 | |||||||||
| 系统 | anolis_os_8 | expat-devel | * | Up to (excluding) 2.2.5-4 | |||||
| 运行在以下环境 | |||||||||
| 系统 | centos_7 | expat | * | Up to (excluding) 2.1.0-14.el7_9 | |||||
| 运行在以下环境 | |||||||||
| 系统 | centos_8 | expat-debugsource | * | Up to (excluding) 2.2.5-4.el8_5.3 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | expat | * | Up to (excluding) 2.2.6-2+deb10u2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | expat | * | Up to (excluding) 2.2.10-2+deb11u1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | expat | * | Up to (excluding) 2.4.3-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | expat | * | Up to (excluding) 2.2.0-2+deb9u4 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | expat | * | Up to (excluding) 2.4.3-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10 | expat | * | Up to (excluding) 2.1.0-14.el7_9 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10SP1 | expat | * | Up to (excluding) 2.2.9-4.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10SP2 | firefox | * | Up to (excluding) 2.2.9-5.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10SP3 | firefox | * | Up to (excluding) 2.2.9-5.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_loongarch64_V10SP1 | expat | * | Up to (excluding) 2.2.9-4.a.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10 | expat | * | Up to (excluding) 2.1.0-14.el7_9 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10SP1 | expat | * | Up to (excluding) 2.2.9-4.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10SP2 | firefox | * | Up to (excluding) 2.2.9-5.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10SP3 | firefox | * | Up to (excluding) 2.2.9-5.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.3 | libexpat1 | * | Up to (excluding) 2.2.5-3.9.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_7 | oraclelinux-release | * | Up to (excluding) 2.1.0-14.0.1.el7_9 | |||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_8 | oraclelinux-release | * | Up to (excluding) 2.2.5-4.el8_5.3 | |||||
| 运行在以下环境 | |||||||||
| 系统 | redhat_7 | expat | * | Up to (excluding) 2.1.0-14.el7_9 | |||||
| 运行在以下环境 | |||||||||
| 系统 | redhat_8 | expat-debugsource | * | Up to (excluding) 2.2.5-4.el8_5.3 | |||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP5 | libexpat1-32bit | * | Up to (excluding) 2.1.0-21.12.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_18.04 | expat | * | Up to (excluding) 98.0+build3-0ubuntu0.18.04.2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_20.04 | expat | * | Up to (excluding) 98.0+build3-0ubuntu0.20.04.2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_21.10 | expat | * | Up to (excluding) 2.4.1-2ubuntu0.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_22.04 | expat | * | Up to (excluding) 1:1snap1-0ubuntu2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_22.10 | expat | * | Up to (excluding) 1:1snap1-0ubuntu1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | unionos_e | firefox | * | Up to (excluding) firefox-79.0-12.up1.uel20 | |||||
- 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 N/A
| CWE-ID | 漏洞类型 |
| CWE-400 | 未加控制的资源消耗（资源穷尽） |
| CWE-682 | 数值计算不正确 |
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