CVE-2022-22160

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.

Affected Software

Weaknesses

• CWE-391: CWE-391 Unchecked Error Condition
• Denial of Service (DoS)

Workarounds

Remove the pp0 interface from a DHCPv6 dual-stack group and move to its own group with no dual-stack enabled.

user@device# show system services dhcp-local-server dhcpv6
… group <group-name1> { overrides { … dual-stack <dual-stack-group-name>; } … interface pp0.0; <<<<< delete and add to new group … }

group <group-name2> { <<<<< new group for PP0 interfaces to be handled separately. … interface pp0.0; <<<<< … }

ADP Enrichment

CVE Program Container

Additional References

• https://kb.juniper.net/JSA11268

References

• https://kb.juniper.net/JSA11268

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