CVE-2016-4921 Information

Description

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 Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://www.securityfocus.com/bid/93532 http://www.securitytracker.com/id/1037014 https://kb.juniper.net/JSA10762

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5