fkie_cve-2022-22215
Vulnerability from fkie_nvd
Published
2022-07-20 15:15
Modified
2024-11-21 06:46
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
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.
References
| ▼ | URL | Tags | |
|---|---|---|---|
| sirt@juniper.net | https://kb.juniper.net/JSA69719 | Exploit, Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://kb.juniper.net/JSA69719 | Exploit, Vendor Advisory |
Impacted products
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"descriptions": [
{
"lang": "en",
"value": "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/\u003cpid\u003e.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 \u003cpid\u003e (\u003cprocess\u003e), uid \u003cuid\u003e inumber \u003cnumber\u003e on /.mount/var: out of inodes which by itself is a clear indication. 2. The following log message can be observed: host \u003cprocess\u003e[\u003cpid\u003e]: ... : 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\u003e 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\u003e file list /var/run/*.env | count need to be checked and if it indicates a high (\u003e10000) 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."
},
{
"lang": "es",
"value": "Una vulnerabilidad de falta de liberaci\u00f3n del Descriptor de Archivo o del Manejador despu\u00e9s del Tiempo de Vida Efectivo en el M\u00f3dulo de Autenticaci\u00f3n Conectable (PAM) de Junos OS y Junos OS Evolved de Juniper Networks permite a un atacante autenticado localmente con privilegios bajos causar una Denegaci\u00f3n de Servicio (DoS). Es posible que tras la finalizaci\u00f3n de una conexi\u00f3n gRPC no se elimine el archivo respectivo/var/run/(pid).env, lo cual, si ocurre repetidamente, puede causar el agotamiento del inodo. El agotamiento del inodo puede presentarse de dos maneras diferentes: 1. Puede observarse el siguiente mensaje de registro: host kernel: pid (pid) ((proceso)), uid (uid) inumber (number) on /.mount/var: out of inodes que por s\u00ed mismo es una clara indicaci\u00f3n. 2. Puede observarse el siguiente mensaje de registro: host (proceso)[(pid)]: ... : No queda espacio en el dispositivo, lo cual no es determinista y s\u00f3lo es una representaci\u00f3n de un error de escritura que podr\u00eda tener varias razones. As\u00ed que debe hacerse la siguiente comprobaci\u00f3n: user@host) show system storage no-forwarding Filesystem Size Used Avail Capacity Mounted on /dev/ada1p1 475M 300M 137M 69% /.mount/var que indica que el error de escritura no es debido realmente a una falta de espacio en disco. Si ha sido confirmado 1. o 2., entonces es debido comprobar la salida de: user@host) file list /var/run/*.env | count y si indica un n\u00famero elevado ()10000) de archivos el sistema ha sido afectado por este problema. Este problema afecta a: Juniper Networks Junos OS Todas las versiones anteriores a 19.1R3-S8; 19.2 versiones anteriores a 19.2R3-S6; 19.3 versiones anteriores a 19.3R3-S5; 19.4 versiones anteriores a 19.4R2-S6, 19.4R3-S7; 20.1 versi\u00f3n 20. 1R1 y posteriores; 20.2 versiones anteriores a 20.2R3-S5; 20.3 versiones anteriores a 20.3R3-S4; 20.4 versiones anteriores a 20.4R3; 21.1 versiones anteriores a 21.1R3; 21.2 versiones anteriores a 21.2R2. Juniper Networks Junos OS Evolved Todas las versiones anteriores a 20.4R3-EVO; 21.1 versiones anteriores a 21.1R3-S1-EVO; 21.2 versiones anteriores a 21.2R1-S1-EVO, 21.2R2-EVO"
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"id": "CVE-2022-22215",
"lastModified": "2024-11-21T06:46:24.660",
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"source": "nvd@nist.gov",
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"published": "2022-07-20T15:15:08.950",
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],
"source": "nvd@nist.gov",
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}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.