Detections
Analytics

Juniper Junos OS Multiple Local Privilege Escalation Vulnerabilities (JSA11114)

high Nessus Plugin ID 145502

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Synopsis

The remote device is missing a vendor-supplied security patch.

Description

The version of Junos OS installed on the remote host is affected by multiple local privilege escalation vulnerabilities as referenced in the JSA11114 advisory. Specifically:

 - A sensitive information disclosure vulnerability in delta-export configuration utility (dexp) of Juniper Networks Junos OS may allow a locally authenticated shell user the ability to create and read database files generated by the dexp utility, including password hashes of local users. Since dexp is shipped with setuid permissions enabled and is owned by the root user, this vulnerability may allow a local privileged user the ability to run dexp with root privileges and access sensitive information in the dexp database.
 (CVE-2021-0204)
- A local privilege escalation vulnerability in telnetd.real of Juniper Networks Junos OS may allow a locally authenticated shell user to escalate privileges and execute arbitrary commands as root. telnetd.real is shipped with setuid permissions enabled and is owned by the root user, allowing local users to run telnetd.real with root privileges. (CVE-2021-0223)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Apply the relevant Junos software release referenced in Juniper advisory JSA11114

See Also

https://kb.juniper.net/JSA11114

Plugin Details

Severity: High

ID: 145502

File Name: juniper_jsa11114.nasl

Version: 1.5

Type: combined

Published: 1/27/2021

Updated: 1/25/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2021-0223

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:juniper:junos

Required KB Items: Host/Juniper/JUNOS/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 1/13/2021

Vulnerability Publication Date: 1/13/2021

Reference Information

CVE: CVE-2021-0204, CVE-2021-0223

IAVA: 2021-A-0036-S

JSA: JSA11114