Junos OS: MX Series: The bbe-smgd process crashes if an unsupported configuration exists and a PPPoE client sends a specific message

Summary

An Unchecked Error Condition vulnerability in the subscriber management daemon (smgd) of Juniper Networks Junos OS allows an unauthenticated adjacent attacker to cause a crash of and thereby a Denial of Service (DoS). In a subscriber management / broadband edge environment if a single session group configuration contains dual-stack and a pp0 interface, smgd will crash and restart every time a PPPoE client sends a specific message. This issue affects Juniper Networks Junos OS on MX Series: 16.1 version 16.1R1 and later versions prior to 18.4R3-S10; 19.1 versions prior to 19.1R2-S3, 19.1R3-S7; 19.2 versions prior to 19.2R1-S8, 19.2R3-S4; 19.3 versions prior to 19.3R3-S4; 19.4 versions prior to 19.4R3-S5; 20.1 versions prior to 20.1R3-S3; 20.2 versions prior to 20.2R3-S3; 20.3 versions prior to 20.3R3-S2; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R3; 21.2 versions prior to 21.2R2. This issue does not affect Juniper Networks Junos OS versions prior to 16.1R1.

Timeline

1. Jan 19, 2022, 12:21 AM UTCCVE published
2. Sep 17, 2024, 3:59 AM UTCRecord last updated

Affected versions

• Juniper Networks Junos OS

  fixed in 18.4R3-S10; From 16.1R1; From 19.3 · fixed in 19.3R3-S4; From 19.4 · fixed in 19.4R3-S5; From 20.1 · fixed in 20.1R3-S3; From 20.2 · fixed in 20.2R3-S3; From 20.3 · fixed in 20.3R3-S2; From 20.4 · fixed in 20.4R3; From 21.1 · fixed in 21.1R3; From 21.2 · fixed in 21.2R2

References 1