Juniper Networks Junos OS uses the 128.0.0.0/2 subnet for internal communications between the RE and PFEs. It was discovered that packets utilizing these IP addresses may egress an EX4300 switch, leaking configuration information such as heartbeats, kernel versions, etc. out to the Internet, leading to an information exposure vulnerability. This issue affects Juniper Networks Junos OS: 14.1X53 versions prior to 14.1X53-D53 on EX4300; 15.1 versions prior to 15.1R7-S6 on EX4300; 15.1X49 versions prior to 15.1X49-D200, 15.1X49-D210 on EX4300; 16.1 versions prior to 16.1R7-S7 on EX4300; 17.1 versions prior to 17.1R2-S11, 17.1R3-S2 on EX4300; 17.2 versions prior to 17.2R3-S3 on EX4300; 17.3 versions prior to 17.3R2-S5, 17.3R3-S7 on EX4300; 17.4 versions prior to 17.4R2-S9, 17.4R3 on EX4300; 18.1 versions prior to 18.1R3-S8 on EX4300; 18.2 versions prior to 18.2R3-S2 on EX4300; 18.3 versions prior to 18.3R2-S3, 18.3R3, 18.3R3-S1 on EX4300; 18.4 versions prior to 18.4R1-S5, 18.4R2-S3, 18.4R3 on EX4300; 19.1 versions prior to 19.1R1-S4, 19.1R2 on EX4300; 19.2 versions prior to 19.2R1-S4, 19.2R2 on EX4300; 19.3 versions prior to 19.3R1-S1, 19.3R2 on EX4300.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Junos | Juniper | 14.1x53 (including) | 14.1x53 (including) |
| Junos | Juniper | 14.1x53-d10 (including) | 14.1x53-d10 (including) |
| Junos | Juniper | 14.1x53-d15 (including) | 14.1x53-d15 (including) |
| Junos | Juniper | 14.1x53-d16 (including) | 14.1x53-d16 (including) |
| Junos | Juniper | 14.1x53-d25 (including) | 14.1x53-d25 (including) |
| Junos | Juniper | 14.1x53-d26 (including) | 14.1x53-d26 (including) |
| Junos | Juniper | 14.1x53-d27 (including) | 14.1x53-d27 (including) |
| Junos | Juniper | 14.1x53-d30 (including) | 14.1x53-d30 (including) |
| Junos | Juniper | 14.1x53-d35 (including) | 14.1x53-d35 (including) |
| Junos | Juniper | 14.1x53-d40 (including) | 14.1x53-d40 (including) |
| Junos | Juniper | 14.1x53-d42 (including) | 14.1x53-d42 (including) |
| Junos | Juniper | 14.1x53-d43 (including) | 14.1x53-d43 (including) |
| Junos | Juniper | 14.1x53-d44 (including) | 14.1x53-d44 (including) |
| Junos | Juniper | 14.1x53-d45 (including) | 14.1x53-d45 (including) |
| Junos | Juniper | 14.1x53-d48 (including) | 14.1x53-d48 (including) |
| Junos | Juniper | 14.1x53-d50 (including) | 14.1x53-d50 (including) |
| Junos | Juniper | 14.1x53-d51 (including) | 14.1x53-d51 (including) |
| Junos | Juniper | 15.1 (including) | 15.1 (including) |
| Junos | Juniper | 15.1-a1 (including) | 15.1-a1 (including) |
| Junos | Juniper | 15.1-f (including) | 15.1-f (including) |
| Junos | Juniper | 15.1-f1 (including) | 15.1-f1 (including) |
| Junos | Juniper | 15.1-f2 (including) | 15.1-f2 (including) |
| Junos | Juniper | 15.1-f2-s1 (including) | 15.1-f2-s1 (including) |
| Junos | Juniper | 15.1-f2-s2 (including) | 15.1-f2-s2 (including) |
| Junos | Juniper | 15.1-f2-s3 (including) | 15.1-f2-s3 (including) |
| Junos | Juniper | 15.1-f2-s4 (including) | 15.1-f2-s4 (including) |
| Junos | Juniper | 15.1-f3 (including) | 15.1-f3 (including) |
| Junos | Juniper | 15.1-f4 (including) | 15.1-f4 (including) |
| Junos | Juniper | 15.1-f5 (including) | 15.1-f5 (including) |
| Junos | Juniper | 15.1-f5-s7 (including) | 15.1-f5-s7 (including) |
| Junos | Juniper | 15.1-f6 (including) | 15.1-f6 (including) |
| Junos | Juniper | 15.1-f6-s1 (including) | 15.1-f6-s1 (including) |
| Junos | Juniper | 15.1-f6-s12 (including) | 15.1-f6-s12 (including) |
| Junos | Juniper | 15.1-f6-s2 (including) | 15.1-f6-s2 (including) |
| Junos | Juniper | 15.1-f6-s3 (including) | 15.1-f6-s3 (including) |
| Junos | Juniper | 15.1-f6-s4 (including) | 15.1-f6-s4 (including) |
| Junos | Juniper | 15.1-f6-s7 (including) | 15.1-f6-s7 (including) |
| Junos | Juniper | 15.1-f7 (including) | 15.1-f7 (including) |
| Junos | Juniper | 15.1-r1 (including) | 15.1-r1 (including) |
| Junos | Juniper | 15.1-r2 (including) | 15.1-r2 (including) |
| Junos | Juniper | 15.1-r3 (including) | 15.1-r3 (including) |
| Junos | Juniper | 15.1-r4 (including) | 15.1-r4 (including) |
| Junos | Juniper | 15.1-r4-s7 (including) | 15.1-r4-s7 (including) |
| Junos | Juniper | 15.1-r4-s8 (including) | 15.1-r4-s8 (including) |
| Junos | Juniper | 15.1-r4-s9 (including) | 15.1-r4-s9 (including) |
| Junos | Juniper | 15.1-r5 (including) | 15.1-r5 (including) |
| Junos | Juniper | 15.1-r5-s1 (including) | 15.1-r5-s1 (including) |
| Junos | Juniper | 15.1-r5-s5 (including) | 15.1-r5-s5 (including) |
| Junos | Juniper | 15.1-r5-s6 (including) | 15.1-r5-s6 (including) |
| Junos | Juniper | 15.1-r6 (including) | 15.1-r6 (including) |
| Junos | Juniper | 15.1-r6-s1 (including) | 15.1-r6-s1 (including) |
| Junos | Juniper | 15.1-r6-s2 (including) | 15.1-r6-s2 (including) |
| Junos | Juniper | 15.1-r6-s6 (including) | 15.1-r6-s6 (including) |
| Junos | Juniper | 15.1-r7 (including) | 15.1-r7 (including) |
| Junos | Juniper | 15.1-r7-s1 (including) | 15.1-r7-s1 (including) |
| Junos | Juniper | 15.1-r7-s2 (including) | 15.1-r7-s2 (including) |
| Junos | Juniper | 15.1-r7-s3 (including) | 15.1-r7-s3 (including) |
| Junos | Juniper | 15.1-r7-s4 (including) | 15.1-r7-s4 (including) |
| Junos | Juniper | 15.1-r7-s5 (including) | 15.1-r7-s5 (including) |
| Junos | Juniper | 15.1x49 (including) | 15.1x49 (including) |
| Junos | Juniper | 15.1x49-d10 (including) | 15.1x49-d10 (including) |
| Junos | Juniper | 15.1x49-d100 (including) | 15.1x49-d100 (including) |
| Junos | Juniper | 15.1x49-d110 (including) | 15.1x49-d110 (including) |
| Junos | Juniper | 15.1x49-d120 (including) | 15.1x49-d120 (including) |
| Junos | Juniper | 15.1x49-d130 (including) | 15.1x49-d130 (including) |
| Junos | Juniper | 15.1x49-d140 (including) | 15.1x49-d140 (including) |
| Junos | Juniper | 15.1x49-d15 (including) | 15.1x49-d15 (including) |
| Junos | Juniper | 15.1x49-d150 (including) | 15.1x49-d150 (including) |
| Junos | Juniper | 15.1x49-d160 (including) | 15.1x49-d160 (including) |
| Junos | Juniper | 15.1x49-d170 (including) | 15.1x49-d170 (including) |
| Junos | Juniper | 15.1x49-d180 (including) | 15.1x49-d180 (including) |
| Junos | Juniper | 15.1x49-d190 (including) | 15.1x49-d190 (including) |
| Junos | Juniper | 15.1x49-d20 (including) | 15.1x49-d20 (including) |
| Junos | Juniper | 15.1x49-d25 (including) | 15.1x49-d25 (including) |
| Junos | Juniper | 15.1x49-d30 (including) | 15.1x49-d30 (including) |
| Junos | Juniper | 15.1x49-d35 (including) | 15.1x49-d35 (including) |
| Junos | Juniper | 15.1x49-d40 (including) | 15.1x49-d40 (including) |
| Junos | Juniper | 15.1x49-d45 (including) | 15.1x49-d45 (including) |
| Junos | Juniper | 15.1x49-d50 (including) | 15.1x49-d50 (including) |
| Junos | Juniper | 15.1x49-d55 (including) | 15.1x49-d55 (including) |
| Junos | Juniper | 15.1x49-d60 (including) | 15.1x49-d60 (including) |
| Junos | Juniper | 15.1x49-d65 (including) | 15.1x49-d65 (including) |
| Junos | Juniper | 15.1x49-d70 (including) | 15.1x49-d70 (including) |
| Junos | Juniper | 15.1x49-d75 (including) | 15.1x49-d75 (including) |
| Junos | Juniper | 15.1x49-d80 (including) | 15.1x49-d80 (including) |
| Junos | Juniper | 15.1x49-d90 (including) | 15.1x49-d90 (including) |
| Junos | Juniper | 16.1 (including) | 16.1 (including) |
| Junos | Juniper | 16.1-r1 (including) | 16.1-r1 (including) |
| Junos | Juniper | 16.1-r2 (including) | 16.1-r2 (including) |
| Junos | Juniper | 16.1-r3 (including) | 16.1-r3 (including) |
| Junos | Juniper | 16.1-r3-s10 (including) | 16.1-r3-s10 (including) |
| Junos | Juniper | 16.1-r3-s11 (including) | 16.1-r3-s11 (including) |
| Junos | Juniper | 16.1-r4 (including) | 16.1-r4 (including) |
| Junos | Juniper | 16.1-r4-s12 (including) | 16.1-r4-s12 (including) |
| Junos | Juniper | 16.1-r4-s2 (including) | 16.1-r4-s2 (including) |
| Junos | Juniper | 16.1-r4-s3 (including) | 16.1-r4-s3 (including) |
| Junos | Juniper | 16.1-r4-s4 (including) | 16.1-r4-s4 (including) |
| Junos | Juniper | 16.1-r4-s6 (including) | 16.1-r4-s6 (including) |
| Junos | Juniper | 16.1-r5 (including) | 16.1-r5 (including) |
| Junos | Juniper | 16.1-r5-s4 (including) | 16.1-r5-s4 (including) |
| Junos | Juniper | 16.1-r6-s1 (including) | 16.1-r6-s1 (including) |
| Junos | Juniper | 16.1-r6-s6 (including) | 16.1-r6-s6 (including) |
| Junos | Juniper | 16.1-r7 (including) | 16.1-r7 (including) |
| Junos | Juniper | 16.1-r7-s2 (including) | 16.1-r7-s2 (including) |
| Junos | Juniper | 16.1-r7-s3 (including) | 16.1-r7-s3 (including) |
| Junos | Juniper | 16.1-r7-s4 (including) | 16.1-r7-s4 (including) |
| Junos | Juniper | 16.1-r7-s5 (including) | 16.1-r7-s5 (including) |
| Junos | Juniper | 16.1-r7-s6 (including) | 16.1-r7-s6 (including) |
| Junos | Juniper | 17.1 (including) | 17.1 (including) |
| Junos | Juniper | 17.1-r1 (including) | 17.1-r1 (including) |
| Junos | Juniper | 17.1-r2 (including) | 17.1-r2 (including) |
| Junos | Juniper | 17.1-r2-s1 (including) | 17.1-r2-s1 (including) |
| Junos | Juniper | 17.1-r2-s10 (including) | 17.1-r2-s10 (including) |
| Junos | Juniper | 17.1-r2-s2 (including) | 17.1-r2-s2 (including) |
| Junos | Juniper | 17.1-r2-s3 (including) | 17.1-r2-s3 (including) |
| Junos | Juniper | 17.1-r2-s4 (including) | 17.1-r2-s4 (including) |
| Junos | Juniper | 17.1-r2-s5 (including) | 17.1-r2-s5 (including) |
| Junos | Juniper | 17.1-r2-s6 (including) | 17.1-r2-s6 (including) |
| Junos | Juniper | 17.1-r2-s7 (including) | 17.1-r2-s7 (including) |
| Junos | Juniper | 17.1-r2-s8 (including) | 17.1-r2-s8 (including) |
| Junos | Juniper | 17.1-r2-s9 (including) | 17.1-r2-s9 (including) |
| Junos | Juniper | 17.1-r3 (including) | 17.1-r3 (including) |
| Junos | Juniper | 17.1-r3-s1 (including) | 17.1-r3-s1 (including) |
| Junos | Juniper | 17.2 (including) | 17.2 (including) |
| Junos | Juniper | 17.2-r1 (including) | 17.2-r1 (including) |
| Junos | Juniper | 17.2-r1-s1 (including) | 17.2-r1-s1 (including) |
| Junos | Juniper | 17.2-r1-s2 (including) | 17.2-r1-s2 (including) |
| Junos | Juniper | 17.2-r1-s3 (including) | 17.2-r1-s3 (including) |
| Junos | Juniper | 17.2-r1-s4 (including) | 17.2-r1-s4 (including) |
| Junos | Juniper | 17.2-r1-s5 (including) | 17.2-r1-s5 (including) |
| Junos | Juniper | 17.2-r1-s7 (including) | 17.2-r1-s7 (including) |
| Junos | Juniper | 17.2-r1-s8 (including) | 17.2-r1-s8 (including) |
| Junos | Juniper | 17.2-r2 (including) | 17.2-r2 (including) |
| Junos | Juniper | 17.2-r2-s6 (including) | 17.2-r2-s6 (including) |
| Junos | Juniper | 17.2-r2-s7 (including) | 17.2-r2-s7 (including) |
| Junos | Juniper | 17.2-r3-s1 (including) | 17.2-r3-s1 (including) |
| Junos | Juniper | 17.2-r3-s2 (including) | 17.2-r3-s2 (including) |
| Junos | Juniper | 17.3 (including) | 17.3 (including) |
| Junos | Juniper | 17.3-r1-s1 (including) | 17.3-r1-s1 (including) |
| Junos | Juniper | 17.3-r2 (including) | 17.3-r2 (including) |
| Junos | Juniper | 17.3-r2-s1 (including) | 17.3-r2-s1 (including) |
| Junos | Juniper | 17.3-r2-s2 (including) | 17.3-r2-s2 (including) |
| Junos | Juniper | 17.3-r2-s3 (including) | 17.3-r2-s3 (including) |
| Junos | Juniper | 17.3-r2-s4 (including) | 17.3-r2-s4 (including) |
| Junos | Juniper | 17.3-r3 (including) | 17.3-r3 (including) |
| Junos | Juniper | 17.3-r3-s1 (including) | 17.3-r3-s1 (including) |
| Junos | Juniper | 17.3-r3-s2 (including) | 17.3-r3-s2 (including) |
| Junos | Juniper | 17.3-r3-s3 (including) | 17.3-r3-s3 (including) |
| Junos | Juniper | 17.3-r3-s4 (including) | 17.3-r3-s4 (including) |
| Junos | Juniper | 17.3-r3-s5 (including) | 17.3-r3-s5 (including) |
| Junos | Juniper | 17.3-r3-s6 (including) | 17.3-r3-s6 (including) |
| Junos | Juniper | 17.4 (including) | 17.4 (including) |
| Junos | Juniper | 17.4-r1 (including) | 17.4-r1 (including) |
| Junos | Juniper | 17.4-r1-s1 (including) | 17.4-r1-s1 (including) |
| Junos | Juniper | 17.4-r1-s2 (including) | 17.4-r1-s2 (including) |
| Junos | Juniper | 17.4-r1-s4 (including) | 17.4-r1-s4 (including) |
| Junos | Juniper | 17.4-r1-s5 (including) | 17.4-r1-s5 (including) |
| Junos | Juniper | 17.4-r1-s6 (including) | 17.4-r1-s6 (including) |
| Junos | Juniper | 17.4-r1-s7 (including) | 17.4-r1-s7 (including) |
| Junos | Juniper | 17.4-r2 (including) | 17.4-r2 (including) |
| Junos | Juniper | 17.4-r2-s1 (including) | 17.4-r2-s1 (including) |
| Junos | Juniper | 17.4-r2-s2 (including) | 17.4-r2-s2 (including) |
| Junos | Juniper | 17.4-r2-s3 (including) | 17.4-r2-s3 (including) |
| Junos | Juniper | 17.4-r2-s4 (including) | 17.4-r2-s4 (including) |
| Junos | Juniper | 17.4-r2-s5 (including) | 17.4-r2-s5 (including) |
| Junos | Juniper | 17.4-r2-s6 (including) | 17.4-r2-s6 (including) |
| Junos | Juniper | 17.4-r2-s7 (including) | 17.4-r2-s7 (including) |
| Junos | Juniper | 17.4-r2-s8 (including) | 17.4-r2-s8 (including) |
| Junos | Juniper | 18.1 (including) | 18.1 (including) |
| Junos | Juniper | 18.1-r2 (including) | 18.1-r2 (including) |
| Junos | Juniper | 18.1-r2-s1 (including) | 18.1-r2-s1 (including) |
| Junos | Juniper | 18.1-r2-s2 (including) | 18.1-r2-s2 (including) |
| Junos | Juniper | 18.1-r2-s4 (including) | 18.1-r2-s4 (including) |
| Junos | Juniper | 18.1-r3 (including) | 18.1-r3 (including) |
| Junos | Juniper | 18.1-r3-s1 (including) | 18.1-r3-s1 (including) |
| Junos | Juniper | 18.1-r3-s2 (including) | 18.1-r3-s2 (including) |
| Junos | Juniper | 18.1-r3-s3 (including) | 18.1-r3-s3 (including) |
| Junos | Juniper | 18.1-r3-s4 (including) | 18.1-r3-s4 (including) |
| Junos | Juniper | 18.1-r3-s6 (including) | 18.1-r3-s6 (including) |
| Junos | Juniper | 18.1-r3-s7 (including) | 18.1-r3-s7 (including) |
| Junos | Juniper | 18.2 (including) | 18.2 (including) |
| Junos | Juniper | 18.2-r1-s3 (including) | 18.2-r1-s3 (including) |
| Junos | Juniper | 18.2-r1-s5 (including) | 18.2-r1-s5 (including) |
| Junos | Juniper | 18.2-r2-s1 (including) | 18.2-r2-s1 (including) |
| Junos | Juniper | 18.2-r2-s2 (including) | 18.2-r2-s2 (including) |
| Junos | Juniper | 18.2-r2-s3 (including) | 18.2-r2-s3 (including) |
| Junos | Juniper | 18.2-r2-s4 (including) | 18.2-r2-s4 (including) |
| Junos | Juniper | 18.2-r2-s5 (including) | 18.2-r2-s5 (including) |
| Junos | Juniper | 18.2-r2-s6 (including) | 18.2-r2-s6 (including) |
| Junos | Juniper | 18.2-r3 (including) | 18.2-r3 (including) |
| Junos | Juniper | 18.2-r3-s1 (including) | 18.2-r3-s1 (including) |
| Junos | Juniper | 18.3 (including) | 18.3 (including) |
| Junos | Juniper | 18.3-r1 (including) | 18.3-r1 (including) |
| Junos | Juniper | 18.3-r1-s1 (including) | 18.3-r1-s1 (including) |
| Junos | Juniper | 18.3-r1-s2 (including) | 18.3-r1-s2 (including) |
| Junos | Juniper | 18.3-r1-s3 (including) | 18.3-r1-s3 (including) |
| Junos | Juniper | 18.3-r1-s5 (including) | 18.3-r1-s5 (including) |
| Junos | Juniper | 18.3-r2 (including) | 18.3-r2 (including) |
| Junos | Juniper | 18.3-r2-s1 (including) | 18.3-r2-s1 (including) |
| Junos | Juniper | 18.3-r2-s2 (including) | 18.3-r2-s2 (including) |
| Junos | Juniper | 18.3-r3 (including) | 18.3-r3 (including) |
| Junos | Juniper | 18.4 (including) | 18.4 (including) |
| Junos | Juniper | 18.4-r1 (including) | 18.4-r1 (including) |
| Junos | Juniper | 18.4-r1-s1 (including) | 18.4-r1-s1 (including) |
| Junos | Juniper | 18.4-r1-s2 (including) | 18.4-r1-s2 (including) |
| Junos | Juniper | 18.4-r1-s3 (including) | 18.4-r1-s3 (including) |
| Junos | Juniper | 18.4-r1-s4 (including) | 18.4-r1-s4 (including) |
| Junos | Juniper | 18.4-r2 (including) | 18.4-r2 (including) |
| Junos | Juniper | 18.4-r2-s1 (including) | 18.4-r2-s1 (including) |
| Junos | Juniper | 18.4-r2-s2 (including) | 18.4-r2-s2 (including) |
| Junos | Juniper | 19.1 (including) | 19.1 (including) |
| Junos | Juniper | 19.1-r1 (including) | 19.1-r1 (including) |
| Junos | Juniper | 19.1-r1-s1 (including) | 19.1-r1-s1 (including) |
| Junos | Juniper | 19.1-r1-s2 (including) | 19.1-r1-s2 (including) |
| Junos | Juniper | 19.1-r1-s3 (including) | 19.1-r1-s3 (including) |
| Junos | Juniper | 19.2 (including) | 19.2 (including) |
| Junos | Juniper | 19.2-r1 (including) | 19.2-r1 (including) |
| Junos | Juniper | 19.2-r1-s1 (including) | 19.2-r1-s1 (including) |
| Junos | Juniper | 19.2-r1-s2 (including) | 19.2-r1-s2 (including) |
| Junos | Juniper | 19.2-r1-s3 (including) | 19.2-r1-s3 (including) |
| Junos | Juniper | 19.3-r1 (including) | 19.3-r1 (including) |