低危 Squid Web Proxy 至 4.7 ESI Parser o越界写入漏洞
CVE编号
CVE-2019-12521利用情况
暂无补丁情况
官方补丁披露时间
2020-04-16漏洞描述
Squid through 4.7中发现了一个问题。 Squid解析ESI时，会将ESI元素保留在ESIContext中。 ESIContext包含用于保存ESIElement堆栈的缓冲区。解析新的ESIElement时，将通过addStackElement添加它。 addStackElement会检查此缓冲区中的元素数量，但是将其关闭1，导致堆溢出为1个元素。溢出在同一结构内，因此它不会影响相邻的内存块，因此只会导致处理时崩溃。解决建议
目前厂商暂未发布修复措施解决此安全问题，建议使用此软件的用户随时关注厂商主页或参考网址以获取解决办法：https://github.com/squid-cache/squid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 | squid-cache | squid | * | From (including) 3.0 | Up to (including) 3.5.28 | ||||
| 运行在以下环境 | |||||||||
| 应用 | squid-cache | squid | * | From (including) 4.0 | Up to (including) 4.7 | ||||
| 运行在以下环境 | |||||||||
| 应用 | squid-cache | squid | * | From (including) 5.0 | Up to (including) 5.0.1 | ||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.10 | squid | * | Up to (excluding) 4.11-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.11 | squid | * | Up to (excluding) 4.11-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.9 | squid | * | Up to (excluding) 4.11-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_2 | squid | * | Up to (excluding) 4.11-1.amzn2.0.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_AMI | squid | * | Up to (excluding) 3.5.20-15.39.amzn1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | anolis_os_8 | squid | * | Up to (excluding) 4.11-4 | |||||
| 运行在以下环境 | |||||||||
| 系统 | centos_8 | libecap-debugsource | * | Up to (excluding) 4.11-3.module+el8.3.0+7851+7808b5f9 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | squid | * | Up to (excluding) 4.6-1+deb10u2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | squid | * | Up to (excluding) 4.11-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | squid | * | Up to (excluding) 4.11-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | squid3 | * | Up to (excluding) 3.5.23-5+deb9u2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | squid | * | Up to (excluding) 4.11-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.1 | squid | * | Up to (excluding) 4.11-lp151.2.15.2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_8 | oraclelinux-release | * | Up to (excluding) 1.0.1-2.module+el8.3.0+7819+eb7d4ef6 | |||||
| 运行在以下环境 | |||||||||
| 系统 | redhat_8 | libecap-debugsource | * | Up to (excluding) 4.11-3.module+el8.3.0+7851+7808b5f9 | |||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12 | squid | * | Up to (excluding) 4.11-4.9 | |||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP4 | squid | * | Up to (excluding) 3.5.21-26.23.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP5 | squid | * | Up to (excluding) 4.11-4.9.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_16.04 | squid3 | * | Up to (excluding) 3.5.12-1ubuntu7.11 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_16.04.7_lts | squid3 | * | Up to (excluding) 3.5.12-1ubuntu7.11 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_18.04 | squid3 | * | Up to (excluding) 3.5.27-1ubuntu1.6 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_18.04.5_lts | squid3 | * | Up to (excluding) 3.5.27-1ubuntu1.6 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_20.04 | squid | * | Up to (excluding) 4.10-1ubuntu1.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_21.04 | squid | * | Up to (excluding) 4.10-1ubuntu2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | unionos_d | squid | * | Up to (excluding) 4.6-1+deb10u2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | unionos_e | squid | * | Up to (excluding) 4.9-11.uel20 | |||||
- 攻击路径 远程
- 攻击复杂度 困难
- 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
| CWE-ID | 漏洞类型 |
| CWE-193 | Off-by-one错误 |
| CWE-787 | 跨界内存写 |
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