中危 redislabs redis 整数溢出或超界折返
CVE编号
CVE-2021-21309利用情况
暂无补丁情况
官方补丁披露时间
2021-02-27漏洞描述
Redis is an open-source, in-memory database that persists on disk. In affected versions of Redis an integer overflow bug in 32-bit Redis version 4.0 or newer could be exploited to corrupt the heap and potentially result with remote code execution. Redis 4.0 or newer uses a configurable limit for the maximum supported bulk input size. By default, it is 512MB which is a safe value for all platforms. If the limit is significantly increased, receiving a large request from a client may trigger several integer overflow scenarios, which would result with buffer overflow and heap corruption. We believe this could in certain conditions be exploited for remote code execution. By default, authenticated Redis users have access to all configuration parameters and can therefore use the “CONFIG SET proto-max-bulk-len” to change the safe default, making the system vulnerable. **This problem only affects 32-bit Redis (on a 32-bit system, or as a 32-bit executable running on a 64-bit system).** The problem is fixed in version 6.2, and the fix is back ported to 6.0.11 and 5.0.11. Make sure you use one of these versions if you are running 32-bit Redis. An additional workaround to mitigate the problem without patching the redis-server executable is to prevent clients from directly executing `CONFIG SET`: Using Redis 6.0 or newer, ACL configuration can be used to block the command. Using older versions, the `rename-command` configuration directive can be used to rename the command to a random string unknown to users, rendering it inaccessible. Please note that this workaround may have an additional impact on users or operational systems that expect `CONFIG SET` to behave in certain ways.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。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 | redislabs | redis | * | From (including) 4.0 | Up to (excluding) 5.0.11 | ||||
| 运行在以下环境 | |||||||||
| 应用 | redislabs | redis | * | From (including) 6.0.0 | Up to (excluding) 6.0.11 | ||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.10 | redis | * | Up to (excluding) 5.0.11-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.11 | redis | * | Up to (excluding) 5.0.11-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.12 | redis | * | Up to (excluding) 5.0.11-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.13 | redis | * | Up to (excluding) 6.0.11-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.14 | redis | * | Up to (excluding) 6.2.0-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.15 | redis | * | Up to (excluding) 6.2.0-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.16 | redis | * | Up to (excluding) 6.2.0-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.17 | redis | * | Up to (excluding) 6.2.0-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.18 | redis | * | Up to (excluding) 6.2.0-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_edge | redis | * | Up to (excluding) 6.2.0-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | redis | * | Up to (excluding) 5:5.0.3-4+deb10u3 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | redis | * | Up to (excluding) 5:6.0.11-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | redis | * | Up to (excluding) 5:6.0.11-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | redis | * | Up to (excluding) 3:3.2.6-3+deb9u4 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | redis | * | Up to (excluding) 5:6.0.11-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10 | redis | * | Up to (excluding) 4.0.11-16.p02.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10SP1 | redis | * | Up to (excluding) 4.0.11-16.p02.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10SP2 | redis | * | Up to (excluding) 4.0.11-16.p02.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10SP3 | redis | * | Up to (excluding) 4.0.11-16.p02.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_loongarch64_V10SP1 | redis | * | Up to (excluding) 4.0.11-16.p03.a.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_loongarch64_V10SP3 | redis | * | Up to (excluding) 4.0.11-16.p03.a.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10 | redis | * | Up to (excluding) 4.0.11-16.p02.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10SP1 | redis | * | Up to (excluding) 4.0.11-16.p02.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10SP2 | redis | * | Up to (excluding) 4.0.11-16.p02.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10SP3 | redis | * | Up to (excluding) 4.0.11-16.p02.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.2 | redis | * | Up to (excluding) 6.0.13-lp152.2.3.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_21.04 | redis | * | Up to (excluding) 5:6.0.11-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | unionos_d | redis | * | Up to (excluding) 5:5.0.14-1+security | |||||
- 攻击路径 远程
- 攻击复杂度 容易
- 权限要求 无需权限
- 影响范围 越权影响
- EXP成熟度 N/A
- 补丁情况 官方补丁
- 数据保密性 数据泄露
- 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-190 | 整数溢出或超界折返 |
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