Multiple vulnerabilities in Juniper Networks Junos OS and Junos OS Evolved



Published: 2021-10-18
Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2021-31359
CVE-2021-31360
CWE-ID CWE-264
CWE-269
Exploitation vector Local
Public exploit N/A
Vulnerable software
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Juniper Junos OS
Operating systems & Components / Operating system

Junos OS Evolved
Operating systems & Components / Operating system

Vendor Juniper Networks, Inc.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU57418

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-31359

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions in the Juniper DHCP daemon (jdhcpd) process, which leads to security restrictions bypass and privilege escalation.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 15.1R, 15.1R1, 15.1R2, 15.1R3, 15.1R4, 15.1R4-S1, 15.1R4-S2, 15.1R4-S3, 15.1R4-S4, 15.1R4-S5, 15.1R4-S6, 15.1R4-S7, 15.1R4-S8, 15.1R4-S9, 15.1R5, 15.1R5-S4, 15.1R5-S5, 15.1R5-S7, 15.1R5-S51, 15.1R5-S52, 15.1R5-S53, 15.1R5-S54, 15.1R5-S55, 15.1R5-S56, 15.1R5-S57, 15.1R6, 15.1R6-S1, 15.1R6-S2, 15.1R6-S3, 15.1R6-S4, 15.1R6-S5, 15.1R6-S6, 15.1R7, 15.1R7-S2, 15.1R7-S3, 15.1R7-S4, 15.1R7-S5, 15.1R7-S6, 15.1R7-S7, 15.1R7-S8, 15.1R7-S9, 17.4R1, 17.4R1-S1, 17.4R1-S2, 17.4R1-S3, 17.4R1-S4, 17.4R1-S5, 17.4R1-S6, 17.4R1-S7, 17.4R1-S8, 17.4R2, 17.4R2-S1, 17.4R2-S2, 17.4R2-S3, 17.4R2-S4, 17.4R2-S5, 17.4R2-S6, 17.4R2-S7, 17.4R2-S8, 17.4R2-S9, 17.4R2-S10, 17.4R2-S11, 17.4R2-S12, 17.4R2-S13, 17.4R3, 17.4R3-S1, 17.4R3-S2, 17.4R3-S3, 17.4R3-S4, 18.3R1, 18.3R1-S1, 18.3R1-S2, 18.3R1-S3, 18.3R1-S4, 18.3R1-S5, 18.3R1-S6, 18.3R1-S7, 18.3R2, 18.3R2-S1, 18.3R2-S2, 18.3R2-S3, 18.3R2-S4, 18.3R3, 18.3R3-S1, 18.3R3-S2, 18.3R3-S3, 18.3R3-S4, 18.4R1, 18.4R1-S1, 18.4R1-S2, 18.4R1-S3, 18.4R1-S4, 18.4R1-S5, 18.4R1-S6, 18.4R1-S7, 18.4R1-S8, 18.4R2, 18.4R2-S1, 18.4R2-S2, 18.4R2-S3, 18.4R2-S4, 18.4R2-S5, 18.4R2-S6, 18.4R2-S7, 18.4R2-S8, 18.4R2-S9, 18.4R3, 18.4R3-S1, 18.4R3-S2, 18.4R3-S3, 18.4R3-S4, 18.4R3-S5, 18.4R3-S6, 18.4R3-S7, 18.4R3-S8, 19.1R, 19.1R1, 19.1R1-S1, 19.1R1-S2, 19.1R1-S3, 19.1R1-S4, 19.1R1-S5, 19.1R1-S6, 19.1R2, 19.1R2-S1, 19.1R2-S2, 19.1R2-S3, 19.1R3, 19.1R3-S1, 19.1R3-S2, 19.1R3-S3, 19.1R3-S4, 19.1R3-S5, 19.2R1, 19.2R1-S1, 19.2R1-S2, 19.2R1-S3, 19.2R1-S4, 19.2R1-S5, 19.2R1-S6, 19.2R2, 19.2R2-S1, 19.2R3, 19.2R3-S1, 19.2R3-S2, 19.3R1, 19.3R1-S1, 19.3R2, 19.3R2-S1, 19.3R2-S2, 19.3R2-S3, 19.3R2-S4, 19.3R2-S5, 19.3R3, 19.3R3-S1, 19.3R3-S2, 19.4R1, 19.4R1-S1, 19.4R1-S2, 19.4R1-S3, 19.4R1-S4, 19.4R2, 19.4R2-S1, 19.4R2-S2, 19.4R2-S3, 19.4R2-S4, 19.4R2-S5, 19.4R3, 19.4R3-S1, 19.4R3-S2, 19.4R3-S3, 19.4R3-S4, 19.4R3-S5, 20.1R1, 20.1R1-S1, 20.1R1-S2, 20.1R1-S3, 20.1R1-S4, 20.1R2, 20.1R2-S1, 20.1R3, 20.2R1, 20.2R1-S1, 20.2R1-S2, 20.2R1-S3, 20.2R2, 20.2R2-S1, 20.2R2-S2, 20.2R2-S3, 20.2R3, 20.2R3-S1, 20.3R1, 20.3R1-S1, 20.3R1-S2, 20.3R2, 20.3R2-S1, 20.4R1, 20.4R1-S1, 20.4R2, 21.1R1

Junos OS Evolved: before 20.4R2-S3-EVO, 21.2R1-EVO

CPE2.3 External links

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA11222&cat=SIRT_1&actp=LIST

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Improper Privilege Management

EUVDB-ID: #VU57419

Risk: Low

CVSSv3.1: 6.2 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-31360

CWE-ID: CWE-269 - Improper Privilege Management

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges.

The vulnerability exists due to improper privilege management. A local user can escalate privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 15.1R, 15.1R1, 15.1R2, 15.1R3, 15.1R4, 15.1R4-S1, 15.1R4-S2, 15.1R4-S3, 15.1R4-S4, 15.1R4-S5, 15.1R4-S6, 15.1R4-S7, 15.1R4-S8, 15.1R4-S9, 15.1R5, 15.1R5-S4, 15.1R5-S5, 15.1R5-S7, 15.1R5-S51, 15.1R5-S52, 15.1R5-S53, 15.1R5-S54, 15.1R5-S55, 15.1R5-S56, 15.1R5-S57, 15.1R6, 15.1R6-S1, 15.1R6-S2, 15.1R6-S3, 15.1R6-S4, 15.1R6-S5, 15.1R6-S6, 15.1R7, 15.1R7-S2, 15.1R7-S3, 15.1R7-S4, 15.1R7-S5, 15.1R7-S6, 15.1R7-S7, 15.1R7-S8, 15.1R7-S9, 17.4R1, 17.4R1-S1, 17.4R1-S2, 17.4R1-S3, 17.4R1-S4, 17.4R1-S5, 17.4R1-S6, 17.4R1-S7, 17.4R1-S8, 17.4R2, 17.4R2-S1, 17.4R2-S2, 17.4R2-S3, 17.4R2-S4, 17.4R2-S5, 17.4R2-S6, 17.4R2-S7, 17.4R2-S8, 17.4R2-S9, 17.4R2-S10, 17.4R2-S11, 17.4R2-S12, 17.4R2-S13, 17.4R3, 17.4R3-S1, 17.4R3-S2, 17.4R3-S3, 17.4R3-S4, 18.3R1, 18.3R1-S1, 18.3R1-S2, 18.3R1-S3, 18.3R1-S4, 18.3R1-S5, 18.3R1-S6, 18.3R1-S7, 18.3R2, 18.3R2-S1, 18.3R2-S2, 18.3R2-S3, 18.3R2-S4, 18.3R3, 18.3R3-S1, 18.3R3-S2, 18.3R3-S3, 18.3R3-S4, 18.4R1, 18.4R1-S1, 18.4R1-S2, 18.4R1-S3, 18.4R1-S4, 18.4R1-S5, 18.4R1-S6, 18.4R1-S7, 18.4R1-S8, 18.4R2, 18.4R2-S1, 18.4R2-S2, 18.4R2-S3, 18.4R2-S4, 18.4R2-S5, 18.4R2-S6, 18.4R2-S7, 18.4R2-S8, 18.4R2-S9, 18.4R3, 18.4R3-S1, 18.4R3-S2, 18.4R3-S3, 18.4R3-S4, 18.4R3-S5, 18.4R3-S6, 18.4R3-S7, 18.4R3-S8, 19.1R, 19.1R1, 19.1R1-S1, 19.1R1-S2, 19.1R1-S3, 19.1R1-S4, 19.1R1-S5, 19.1R1-S6, 19.1R2, 19.1R2-S1, 19.1R2-S2, 19.1R2-S3, 19.1R3, 19.1R3-S1, 19.1R3-S2, 19.1R3-S3, 19.1R3-S4, 19.1R3-S5, 19.2R1, 19.2R1-S1, 19.2R1-S2, 19.2R1-S3, 19.2R1-S4, 19.2R1-S5, 19.2R1-S6, 19.2R2, 19.2R2-S1, 19.2R3, 19.2R3-S1, 19.2R3-S2, 19.3R1, 19.3R1-S1, 19.3R2, 19.3R2-S1, 19.3R2-S2, 19.3R2-S3, 19.3R2-S4, 19.3R2-S5, 19.3R3, 19.3R3-S1, 19.3R3-S2, 19.4R1, 19.4R1-S1, 19.4R1-S2, 19.4R1-S3, 19.4R1-S4, 19.4R2, 19.4R2-S1, 19.4R2-S2, 19.4R2-S3, 19.4R2-S4, 19.4R2-S5, 19.4R3, 19.4R3-S1, 19.4R3-S2, 19.4R3-S3, 19.4R3-S4, 19.4R3-S5, 20.1R1, 20.1R1-S1, 20.1R1-S2, 20.1R1-S3, 20.1R1-S4, 20.1R2, 20.1R2-S1, 20.1R3, 20.2R1, 20.2R1-S1, 20.2R1-S2, 20.2R1-S3, 20.2R2, 20.2R2-S1, 20.2R2-S2, 20.2R2-S3, 20.2R3, 20.2R3-S1, 20.3R1, 20.3R1-S1, 20.3R1-S2, 20.3R2, 20.3R2-S1, 20.4R1, 20.4R1-S1, 20.4R2, 21.1R1

Junos OS Evolved: before 20.4R2-S3-EVO, 21.2R1-EVO

CPE2.3 External links

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA11222&cat=SIRT_1&actp=LIST

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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