Description
In a Dynamic Host Configuration Protocol version 6 (DHCPv6) environment, the jdhcpd daemon may crash and restart upon receipt of certain DHCPv6 solicit messages received from a DHCPv6 client. By continuously sending the same crafted packet, an attacker can repeatedly crash the jdhcpd process causing a sustained Denial of Service (DoS) to both IPv4 and IPv6 clients. Affected releases are Juniper Networks Junos OS: 15.1 versions prior to 15.1F6-S12, 15.1R7-S3; 15.1X49 versions prior to 15.1X49-D171, 15.1X49-D180; 15.1X53 versions prior to 15.1X53-D236, 15.1X53-D496; 16.1 versions prior to 16.1R3-S10, 16.1R7-S4; 16.2 versions prior to 16.2R2-S8; 17.1 versions prior to 17.1R2-S10, 17.1R3; 17.2 versions prior to 17.2R1-S8, 17.2R3-S1; 17.3 versions prior to 17.3R3-S3; 17.4 versions prior to 17.4R1-S6, 17.4R2-S3; 18.1 versions prior to 18.1R2-S4, 18.1R3-S2; 18.2 versions prior to 18.2R2; 18.2X75 versions prior to 18.2X75-D30; 18.3 versions prior to 18.3R1-S2. This issue does not affect Junos OS releases prior to 15.1.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Juniper Networks Junos OS
15.1 to < 15.1F6-S12, 15.1R7-S3affected15.1X49 to < 15.1X49-D171, 15.1X49-D180affected15.1X53 to < 15.1X53-D236, 15.1X53-D496affected16.1 to < 16.1R3-S10, 16.1R7-S4affected16.2 to < 16.2R2-S8affected17.1 to < 17.1R2-S10, 17.1R3affected17.2 to < 17.2R1-S8, 17.2R3-S1affected17.3 to < 17.3R3-S3affected17.4 to < 17.4R1-S6, 17.4R2-S3affected18.1 to < 18.1R2-S4, 18.1R3-S2affected18.2 to < 18.2R2affected18.2X75 to < 18.2X75-D30affected18.3 to < 18.3R1-S2affectedall to < 15.1unaffected