CVE-2016-4921

Severity

78%

Complexity

99%

Confidentiality

115%

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.

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.

CVSS 3.0 Base Score 7.5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

CVSS 2.0 Base Score 7.8. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:C).

Overview

Type

Juniper

First reported 7 years ago

2017-10-13 17:29:00

Last updated 5 years ago

2019-10-09 23:18:00

Affected Software

Juniper JUNOS 11.4

11.4

Juniper Junos 11.4 R1

11.4

Juniper Junos 11.4 R10

11.4

Juniper Junos 11.4 R11

11.4

Juniper JUNOS 11.4R12

11.4

Juniper Junos 11.4 R2

11.4

Juniper Junos 11.4 R3

11.4

Juniper Junos 11.4 R4

11.4

Juniper Junos 11.4 R5

11.4

Juniper Junos 11.4 R6

11.4

Juniper Junos 11.4 R7

11.4

Juniper Junos 11.4 R8

11.4

Juniper Junos 11.4 R9

11.4

Juniper JunOS 11.4R13 S2

11.4r13

Juniper JUNOS 12.3

12.3

Juniper Junos 12.3 R1

12.3

Juniper Junos 12.3 R2

12.3

Juniper Junos 12.3 R3

12.3

Juniper JunOS 12.3x48 D10

12.3x48

Juniper JunOS 12.3x48 D15

12.3x48

Juniper Junos 12.3X48 D25

12.3x48

Juniper JUNOS 13.3

13.3

Juniper Junos 13.3 R1

13.3

Juniper Junos 13.3 R2

13.3

Juniper JUNOS 13.3R2-S2

13.3

Juniper Junos 13.3 R3

13.3

Juniper Junos 13.3 R4

13.3

Juniper Junos 13.3 R5

13.3

Juniper JUNOS 13.3 R6

13.3

Juniper Junos 13.3 R7

13.3

Juniper Junos 13.3 R8

13.3

Juniper Junos 13.3 R9

13.3

Juniper JUNOS 14.1

14.1

Juniper JUNOS 14.1R1

14.1

Juniper Junos 14.1 R2

14.1

Juniper JunOS 14.1 R4

14.1

Juniper JunOS 14.1 R8

14.1

Juniper JunOS 14.1x53 D15

14.1x53

Juniper JunOS 14.1x53 D16

14.1x53

Juniper JunOS 14.1x53 D25

14.1x53

Juniper JunOS 14.1x53 D26

14.1x53

Juniper Junos 14.1X53 D27

14.1x53

Juniper JunOS 14.1x53 D40

14.1x53

Juniper Junos 14.1X55

14.1x55

Juniper JunOS 14.1X55 D30

14.1x55

Juniper Junos 14.2 R1

14.2

Juniper Junos 14.2 R2

14.2

Juniper Junos 14.2 R3

14.2

Juniper Junos 14.2 R4

14.2

Juniper Junos 14.2 R6

14.2

Juniper JunOS 15.1 F1

15.1

Juniper JunOS 15.1 F2

15.1

Juniper Junos 15.1 F5

15.1

Juniper JUNOS 15.1 F6

15.1

Juniper Junos 15.1 R3

15.1

Juniper JunOS 15.1x49 D10

15.1x49

Juniper JunOS 15.1x49 D20

15.1x49

Juniper JunOS 15.1X49 D30

15.1x49

Juniper Junos 15.1X49 D35

15.1x49

Juniper Junos 15.1X53 D20

15.1x53

Juniper Junos 15.1X53 D21

15.1x53

Juniper JunOS 15.1X53 D25

15.1x53

Juniper Junos 15.1X53 D30

15.1x53

Juniper Junos 15.1X53 D32

15.1x53

Juniper Junos 15.1X53 D33

15.1x53

Juniper Junos 15.1X53 D34

15.1x53

Juniper Junos OS 15.1X53 D50

15.1x53

Juniper Junos OS 15.1X53 D51

15.1x53

Juniper Junos OS 15.1X53 D52

15.1x53

Juniper Junos OS 15.1X53 D55

15.1x53

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