Juniper Junos SYN Cookie Protection DoS (PSN-2012-07-643)

High Nessus Plugin ID 59987


The remote device has a denial of service vulnerability.


According to its self-reported version number, the SYN cookie protection implementation of the remote Junos system has a denial of service vulnerability. If SYN flood protection is enabled and the SYN cookie protection threshold is exceeded, the server responds to connections with an RST, causing the connection to be closed.


Apply the relevant Junos upgrade referenced in Juniper advisory PSN-2012-07-643.

See Also

Plugin Details

Severity: High

ID: 59987

File Name: juniper_psn-2012-07-643.nasl

Version: $Revision: 1.6 $

Type: combined

Published: 2012/07/17

Modified: 2015/09/08

Dependencies: 55932

Risk Information

Risk Factor: High


Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/o:juniper:junos

Required KB Items: Host/Juniper/model, Host/Juniper/JUNOS/Version

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2012/07/11

Vulnerability Publication Date: 2012/07/11

Reference Information

OSVDB: 85341