CVE-2022-22215
published 2022-07-20CVE-2022-22215: A Missing Release of File Descriptor or Handle after Effective Lifetime vulnerability in plugable authentication module (PAM) of Juniper Networks Junos OS and…
medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
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/.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 (), uid inumber on /.mount/var: out of inodes which by itself is a clear indication. 2. The following log message can be observed: host []: ... : 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.
Affected
30 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| juniper | junos | < 19.1 | 19.1 |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos_os | — | — |
| juniper | junos_os_evolved | < 20.4 | 20.4 |
| juniper | junos_os_evolved | — | — |
| juniper | junos_os_evolved | — | — |
| juniper | junos_os_evolved | — | — |
| juniper | junos_space | — | — |
| juniper_networks | junos_os | >= 19.2 < 19.2R3-S6 | 19.2R3-S6 |
| juniper_networks | junos_os | >= 19.3 < 19.3R3-S5 | 19.3R3-S5 |
| juniper_networks | junos_os | >= 19.4 < 19.4R2-S6, 19.4R3-S7 | 19.4R2-S6, 19.4R3-S7 |
| juniper_networks | junos_os | >= 20.1R1 < 20.1* | 20.1* |
| juniper_networks | junos_os | >= 20.2 < 20.2R3-S5 | 20.2R3-S5 |
| juniper_networks | junos_os | >= 20.3 < 20.3R3-S4 | 20.3R3-S4 |
| juniper_networks | junos_os | >= 20.4 < 20.4R3 | 20.4R3 |
| juniper_networks | junos_os | >= 21.1 < 21.1R3 | 21.1R3 |