CVE编号
CVE-2021-3489利用情况
暂无补丁情况
官方补丁披露时间
2021-06-04漏洞描述
The eBPF RINGBUF bpf_ringbuf_reserve() function in the Linux kernel did not check that the allocated size was smaller than the ringbuf size, allowing an attacker to perform out-of-bounds writes within the kernel and therefore, arbitrary code execution. This issue was fixed via commit 4b81ccebaeee ("bpf, ringbuf: Deny reserve of buffers larger than ringbuf") (v5.13-rc4) and backported to the stable kernels in v5.12.4, v5.11.21, and v5.10.37. It was introduced via 457f44363a88 ("bpf: Implement BPF ring buffer and verifier support for it") (v5.8-rc1).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://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=4b81cc... | |
| https://security.netapp.com/advisory/ntap-20210716-0004/ | |
| https://ubuntu.com/security/notices/USN-4949-1 | |
| https://ubuntu.com/security/notices/USN-4950-1 | |
| https://www.openwall.com/lists/oss-security/2021/05/11/10 | |
| https://www.zerodayinitiative.com/advisories/ZDI-21-590/ |
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 | |||||||||
| 系统 | amazon_2 | kernel | * |
Up to (excluding) 5.10.47-39.130.amzn2 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | canonical | ubuntu_linux | 20.04 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | canonical | ubuntu_linux | 20.10 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | canonical | ubuntu_linux | 21.04 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | centos_8 | kernel | * |
Up to (excluding) 4.18.0-348.el8 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_32 | kernel | * |
Up to (excluding) 5.11.20-100.fc32 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_33 | kernel | * |
Up to (excluding) 5.11.20-200.fc33 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_34 | kernel | * |
Up to (excluding) 5.11.20-300.fc34 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | linux | linux_kernel | * |
From (including) 5.11 |
Up to (excluding) 5.11.21 |
||||
| 运行在以下环境 | |||||||||
| 系统 | linux | linux_kernel | * |
From (including) 5.12 |
Up to (excluding) 5.12.4 |
||||
| 运行在以下环境 | |||||||||
| 系统 | linux | linux_kernel | * |
From (including) 5.8 |
Up to (excluding) 5.10.37 |
||||
| 运行在以下环境 | |||||||||
| 系统 | linux | linux_kernel | 5.13 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.3 | kernel | * |
Up to (excluding) 5.3.18-38.3.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.3 | kernel | * |
Up to (excluding) 5.3.18-59.5.2 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.3 | kernel | * |
Up to (excluding) 5.3.18-59.5.2.18.2.2 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_8 | kernel | * |
Up to (excluding) 4.18.0-348.el8 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | redhat_8 | kernel | * |
Up to (excluding) 4.18.0-348.el8 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_20.04 | kernel | * |
Up to (excluding) 5.8.0-53.60~20.04.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_21.04 | kernel | * |
Up to (excluding) 5.11.0-1005.5 |
|||||
- 攻击路径 本地
- 攻击复杂度 困难
- 权限要求 普通权限
- 影响范围 全局影响
- EXP成熟度 未验证
- 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 无影响
- 全网数量 N/A
还没有评论，来说两句吧...