high
7.8
CWE
399
Advisory Published
Updated

CVE-2016-4921: Junos: IPv6 denial of service vulnerability due to resource exhaustion (CVE-2016-4921)

First published: Wed Oct 12 2016(Updated: )

By flooding a Juniper Networks router running Junos OS with specially crafted IPv6 traffic, all available resources can be consumed, leading to the inability to store next hop information for legitimate traffic. In extreme cases, the crafted IPv6 traffic may result in a total resource exhaustion and kernel panic. The issue is triggered by traffic destined to the router. Transit traffic does not trigger the vulnerability. This issue only affects devices with IPv6 enabled and configured. Devices not configured to process IPv6 traffic are unaffected by this vulnerability. This issue was found during internal product security testing. Juniper SIRT is not aware of any malicious exploitation of this vulnerability. Affected releases are Juniper Networks Junos OS 11.4 prior to 11.4R13-S3; 12.3 prior to 12.3R3-S4; 12.3X48 prior to 12.3X48-D30; 13.3 prior to 13.3R10, 13.3R4-S11; 14.1 prior to 14.1R2-S8, 14.1R4-S12, 14.1R8; 14.1X53 prior to 14.1X53-D28, 14.1X53-D40; 14.1X55 prior to 14.1X55-D35; 14.2 prior to 14.2R3-S10, 14.2R4-S7, 14.2R6; 15.1 prior to 15.1F2-S5, 15.1F5-S2, 15.1F6, 15.1R3; 15.1X49 prior to 15.1X49-D40; 15.1X53 prior to 15.1X53-D57, 15.1X53-D70.

Credit: sirt@juniper.net

Affected SoftwareAffected VersionHow to fix
Juniper JUNOS=11.4
Juniper JUNOS=11.4-r1
Juniper JUNOS=11.4-r10
Juniper JUNOS=11.4-r11
Juniper JUNOS=11.4-r12
Juniper JUNOS=11.4-r2
Juniper JUNOS=11.4-r3
Juniper JUNOS=11.4-r4
Juniper JUNOS=11.4-r5
Juniper JUNOS=11.4-r6
Juniper JUNOS=11.4-r7
Juniper JUNOS=11.4-r8
Juniper JUNOS=11.4-r9
Juniper JUNOS=11.4r13-s2
Juniper JUNOS=12.3
Juniper JUNOS=12.3-r1
Juniper JUNOS=12.3-r2
Juniper JUNOS=12.3-r3
Juniper JUNOS=12.3x48-d10
Juniper JUNOS=12.3x48-d15
Juniper JUNOS=12.3x48-d25
Juniper JUNOS=13.3
Juniper JUNOS=13.3-r1
Juniper JUNOS=13.3-r2
Juniper JUNOS=13.3-r2-s2
Juniper JUNOS=13.3-r3
Juniper JUNOS=13.3-r4
Juniper JUNOS=13.3-r4-s11
Juniper JUNOS=13.3-r5
Juniper JUNOS=13.3-r6
Juniper JUNOS=13.3-r7
Juniper JUNOS=13.3-r8
Juniper JUNOS=13.3-r9
Juniper JUNOS=14.1
Juniper JUNOS=14.1-r1
Juniper JUNOS=14.1-r2
Juniper JUNOS=14.1-r4
Juniper JUNOS=14.1-r8
Juniper JUNOS=14.1x53-d15
Juniper JUNOS=14.1x53-d16
Juniper JUNOS=14.1x53-d25
Juniper JUNOS=14.1x53-d26
Juniper JUNOS=14.1x53-d27
Juniper JUNOS=14.1x53-d40
Juniper JUNOS=14.1x55
Juniper JUNOS=14.1x55-d30
Juniper JUNOS=14.2-r1
Juniper JUNOS=14.2-r2
Juniper JUNOS=14.2-r3
Juniper JUNOS=14.2-r4
Juniper JUNOS=14.2-r6
Juniper JUNOS=15.1-f1
Juniper JUNOS=15.1-f2
Juniper JUNOS=15.1-f5
Juniper JUNOS=15.1-f6
Juniper JUNOS=15.1-r3
Juniper JUNOS=15.1x49-d10
Juniper JUNOS=15.1x49-d20
Juniper JUNOS=15.1x49-d30
Juniper JUNOS=15.1x49-d35
Juniper JUNOS=15.1x53-d20
Juniper JUNOS=15.1x53-d21
Juniper JUNOS=15.1x53-d25
Juniper JUNOS=15.1x53-d30
Juniper JUNOS=15.1x53-d32
Juniper JUNOS=15.1x53-d33
Juniper JUNOS=15.1x53-d34
Juniper JUNOS=15.1x53-d50
Juniper JUNOS=15.1x53-d51
Juniper JUNOS=15.1x53-d52
Juniper JUNOS=15.1x53-d55

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