Published:2013/12/13  Last Updated:2013/12/13

Juniper ScreenOS vulnerable to denial-of-service (DoS)


ScreenOS provided by Juniper Networks contains a denial-of-service (DoS) vulnerability.

Products Affected

  • ScreenOS version 6.3
  • ScreenOS version 6.2
  • ScreenOS version 5.4 (NS 5GT only)


ScreenOS provided by Juniper Networks contains a denial-of-service (DoS) vulnerability.


When processing a malicious packet, the device may hang.


Enable the "Ping of Death Screen"
Enable the "Ping of Death Screen" setting according to the information provided by the developer.

According to the developer, version 6.3.0.r16 which addresses this issue will be made available by the end of 2013.


JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2013.12.13

Measures Conditions Severity
Access Required can be attacked over the Internet using packets
  • High
Authentication anonymous or no authentication (IP addresses do not count)
  • High
User Interaction Required the vulnerability can be exploited without an honest user taking any action
  • High
Exploit Complexity some expertise and/or luck required (most buffer overflows, guessing correctly in small space, expertise in Windows function calls)
  • Mid-High

Description of each analysis measures


Shuichiro Suzuki of FFRI, Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

Other Information

JPCERT Reports
CERT Advisory
CPNI Advisory
CVE CVE-2013-6958
JVN iPedia JVNDB-2013-000119