juniper junos 对已超过有效生命周期的资源丧失索引
CVE编号
CVE-2022-22215利用情况
暂无补丁情况
N/A披露时间
2022-07-20漏洞描述
A Missing Release of File Descriptor or Handle after Effective Lifetime vulnerability in plugable authentication module (PAM) of Juniper Networks Junos OS and Junos OS Evolved allows a locally authenticated attacker with low privileges to cause a Denial of Service (DoS). It is possible that after the termination of a gRPC connection the respective/var/run/<pid>.env file is not getting deleted which if occurring repeatedly can cause inode exhaustion. Inode exhaustion can present itself in two different ways: 1. The following log message can be observed: host kernel: pid <pid> (<process>), uid <uid> inumber <number> on /.mount/var: out of inodes which by itself is a clear indication. 2. The following log message can be observed: host <process>[<pid>]: ... : No space left on device which is not deterministic and just a representation of a write error which could have several reasons. So the following check needs to be done: user@host> show system storage no-forwarding Filesystem Size Used Avail Capacity Mounted on /dev/ada1p1 475M 300M 137M 69% /.mount/var which indicates that the write error is not actually due to a lack of disk space. If either 1. or 2. has been confirmed, then the output of: user@host> file list /var/run/*.env | count need to be checked and if it indicates a high (>10000) number of files the system has been affected by this issue. This issue affects: Juniper Networks Junos OS All versions prior to 19.1R3-S8; 19.2 versions prior to 19.2R3-S6; 19.3 versions prior to 19.3R3-S5; 19.4 versions prior to 19.4R2-S6, 19.4R3-S7; 20.1 version 20.1R1 and later versions; 20.2 versions prior to 20.2R3-S5; 20.3 versions prior to 20.3R3-S4; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R3; 21.2 versions prior to 21.2R2. Juniper Networks Junos OS Evolved All versions prior to 20.4R3-EVO; 21.1 versions prior to 21.1R3-S1-EVO; 21.2 versions prior to 21.2R1-S1-EVO, 21.2R2-EVO.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://kb.juniper.net/JSA69719 |
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 | juniper | junos | * | Up to (excluding) 19.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | juniper | junos | 19.1 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | juniper | junos | 19.2 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | juniper | junos | 19.3 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | juniper | junos | 19.4 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | juniper | junos | 20.1 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | juniper | junos | 20.2 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | juniper | junos | 20.3 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | juniper | junos | 20.4 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | juniper | junos | 21.1 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | juniper | junos | 21.2 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | juniper | junos_os_evolved | * | Up to (excluding) 20.4 | |||||
| 运行在以下环境 | |||||||||
| 系统 | juniper | junos_os_evolved | 20.4 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | juniper | junos_os_evolved | 21.1 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | juniper | junos_os_evolved | 21.2 | - | |||||
- 攻击路径 本地
- 攻击复杂度 低
- 权限要求 低
- 影响范围 未更改
- 用户交互 无
- 可用性 高
- 保密性 无
- 完整性 无
| CWE-ID | 漏洞类型 |
| CWE-772 | 对已超过有效生命周期的资源丧失索引 |
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