SB2023100601 - Junos OS and Junos OS Evolved update for MQTT

Security Bulletin ID SB2023100601

Severity

Medium

Patch available

YES

Number of vulnerabilities 3

Exploitation vector Remote access

Highest impact Denial of service

Breakdown by Severity

Low
Medium
High
Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Input validation error (CVE-ID: CVE-2017-7653)

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.

2) Memory leak (CVE-ID: CVE-2017-7654)

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.

3) NULL pointer dereference (CVE-ID: CVE-2017-7655)

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.

Remediation

Install update from vendor's website.

References

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