The bsnmp software library is a SNMP (Simple Network Management Protocol) implementation included with Juniper Networks Junos OS for the snmpd process.

A programming error allows a remote user to read unrelated data or trigger a snmpd process crash.
 

This issue affects Juniper Networks Junos OS

• 15.1 versions prior to 15.1R7-S7;
• 16.1 versions prior to 16.1R7-S8;
• 17.2 versions prior to 17.2R3-S4;
• 17.2X75 versions prior to 17.2X75-D45;
• 17.3 versions prior to 17.3R3-S8;
• 17.4 versions prior to 17.4R2-S12, 17.4R3;
• 18.1 versions prior to 18.1R3-S9;
• 18.2 versions prior to 18.2R3-S6;
• 18.2X75 versions prior to 18.2X75-D34, 18.2X75-D420, 18.2X75-D53, 18.2X75-D60;
• 18.3 versions prior to 18.3R2-S3, 18.3R3-S1;
• 18.4 versions prior to 18.4R1-S5, 18.4R2-S5, 18.4R3;
• 19.1 versions prior to 19.1R1-S4, 19.1R2-S2, 19.1R3;
• 19.2 versions prior to 19.2R1-S5, 19.2R2;
• 19.3 versions prior to 19.3R2.

This issue does not affect Junos OS with FreeBSD 6, for example Junos OS 15.1X49.
 

To verifiy which FreeBSD version is used in Junos OS, the administrator can use the following commands:

Please refer to https://kb.juniper.net/KB31678 [juniper.net] for an alternative method to check the FreeBSD version.

The examples of minimum config stanza affected by this issue:

Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

This issue has been assigned CVE-2019-5610 .

The following software releases have been updated to resolve this specific issue: 15.1R7-S7, 16.1R7-S8, 17.2R3-S4, 17.2X75-D45, 17.3R3-S8, 17.4R2-S12, 17.4R3, 18.1R3-S9, 18.2R3-S6, 18.2X75-D34, 18.2X75-D420, 18.2X75-D53, 18.2X75-D60, 18.3R2-S3, 18.3R3-S1, 18.4R1-S5, 18.4R2-S5, 18.4R2-S6, 18.4R3, 19.1R1-S4, 19.1R2-S2, 19.1R3, 19.2R1-S5, 19.2R2, 19.3R2, 19.4R1 and all subsequent releases.

This issue is being tracked as 1453683 .

Software releases or updates are available for download at https://www.juniper.net/support/downloads/ .

Disable SNMP (disabled by default), utilize edge filtering with source-address validation (uRPF, etc.), access control lists (ACLs), and/or SNMPv3 authentication to limit access to the device only from trusted hosts.

• KB16613: Overview of the Juniper Networks SIRT Quarterly Security Bulletin Publication Process [juniper.net]
• KB16765: In which releases are vulnerabilities fixed? [juniper.net]
• KB16446: Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories [juniper.net]
• Report a Vulnerability - How to Contact the Juniper Networks Security Incident Response Team
• CVE-2019-5610 at cve.mitre.org
• how to check the FreeBSD version in Junos