CVE编号
CVE-2021-33910利用情况
暂无补丁情况
官方补丁披露时间
2021-07-21漏洞描述
basic/unit-name.c in systemd prior to 246.15, 247.8, 248.5, and 249.1 has a Memory Allocation with an Excessive Size Value (involving strdupa and alloca for a pathname controlled by a local attacker) that results in an operating system crash.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 |
|
|---|---|
| http://packetstormsecurity.com/files/163621/Sequoia-A-Deep-Root-In-Linuxs-Fil... | |
| http://www.openwall.com/lists/oss-security/2021/08/04/2 | |
| http://www.openwall.com/lists/oss-security/2021/08/17/3 | |
| http://www.openwall.com/lists/oss-security/2021/09/07/3 | |
| https://github.com/systemd/systemd-stable/commit/4a1c5f34bd3e1daed4490e9d9791... | |
| https://github.com/systemd/systemd-stable/commit/764b74113e36ac5219a4b82a05f3... | |
| https://github.com/systemd/systemd-stable/commit/b00674347337b7531c92fdb65590... | |
| https://github.com/systemd/systemd-stable/commit/cfd14c65374027b34dbbc4f05514... | |
| https://github.com/systemd/systemd/commit/b34a4f0e6729de292cb3b0c03c1d48f246ad896b | |
| https://github.com/systemd/systemd/pull/20256/commits/441e0115646d54f080e5c3b... | |
| https://lists.fedoraproject.org/archives/list/[email protected]... | |
| https://lists.fedoraproject.org/archives/list/[email protected]... | |
| https://security.gentoo.org/glsa/202107-48 | |
| https://security.netapp.com/advisory/ntap-20211104-0008/ | |
| https://www.debian.org/security/2021/dsa-4942 | |
| https://www.openwall.com/lists/oss-security/2021/07/20/2 |
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 | freedesktop | systemd | * |
Up to (excluding) 246.15 |
|||||
| 运行在以下环境 | |||||||||
| 应用 | freedesktop | systemd | * |
From (including) 247 |
Up to (excluding) 247.8 |
||||
| 运行在以下环境 | |||||||||
| 应用 | freedesktop | systemd | * |
From (including) 248 |
Up to (excluding) 248.5 |
||||
| 运行在以下环境 | |||||||||
| 应用 | freedesktop | systemd | * |
From (including) 249 |
Up to (excluding) 249.1 |
||||
| 运行在以下环境 | |||||||||
| 系统 | centos_8 | systemd | * |
Up to (excluding) 239-45.el8_4.2 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | systemd | * |
Up to (excluding) 241-7~deb10u8 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | systemd | * |
Up to (excluding) 232-25+deb9u13 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_33 | systemd | * |
Up to (excluding) 246.15-1.fc33 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_34 | systemd | * |
Up to (excluding) 248.5-1.fc34 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.2 | systemd | * |
Up to (excluding) 234-lp152.31.31.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.3 | systemd | * |
Up to (excluding) 234-24.90.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.3 | systemd | * |
Up to (excluding) 246.13-7.8.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.3 | systemd | * |
Up to (excluding) 246.15-7.11.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_8 | systemd | * |
Up to (excluding) 239-45.0.2.el8_4.2 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | redhat_8 | systemd | * |
Up to (excluding) 239-45.el8_4.2 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP5 | systemd | * |
Up to (excluding) 228-157.30.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_16.04 | systemd | * |
Up to (excluding) 229-4ubuntu21.31+esm1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_18.04 | systemd | * |
Up to (excluding) 237-3ubuntu10.49 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_20.04 | systemd | * |
Up to (excluding) 245.4-4ubuntu3.10 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_21.04 | systemd | * |
Up to (excluding) 247.3-3ubuntu3.4 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_8 | systemd | * |
Up to (excluding) 239-45.el8_4.2 |
|||||
- 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 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
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