Junos OS and Junos OS Evolved update for MQTT



Published: 2023-10-06
Risk Medium
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2017-7653
CVE-2017-7654
CVE-2017-7655
CWE-ID CWE-20
CWE-401
CWE-476
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		Junos OS Evolved
Operating systems & Components / Operating system

Juniper Junos OS
Operating systems & Components / Operating system

Vendor Juniper Networks, Inc.

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU81667

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-7653

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of not valid UTF-8 string. A remote user can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Junos OS Evolved: 20.4 - 22.3R1-S2-EVO

Juniper Junos OS: 19.1 - 22.3R1-S2

External links

http://supportportal.juniper.net/s/article/2023-07-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-Multiple-vulnerabilities-have-been-resolved-in-MQTT


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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

2) Memory leak

EUVDB-ID: #VU81666

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-7654

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak. A remote attacker can send specially crafted CONNECT packets to force the application to leak memory and perform denial of service attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Junos OS Evolved: 20.4 - 22.3R1-S2-EVO

Juniper Junos OS: 19.1 - 22.3R1-S2

External links

http://supportportal.juniper.net/s/article/2023-07-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-Multiple-vulnerabilities-have-been-resolved-in-MQTT


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

3) NULL pointer dereference

EUVDB-ID: #VU18088

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-7655

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in lib/messages_mosq.c. A remote attacker can perform a denial of service (DoS) attack against the application, using the vulnerable library.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Junos OS Evolved: 20.4 - 22.3R1-S2-EVO

Juniper Junos OS: 19.1 - 22.3R1-S2

External links

http://supportportal.juniper.net/s/article/2023-07-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-Multiple-vulnerabilities-have-been-resolved-in-MQTT


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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



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