Juniper Junos SRX Series ALG 'flowd' Remote DoS (JSA10650)

This script is Copyright (C) 2014-2017 Tenable Network Security, Inc.


Synopsis :

The remote device is missing a vendor-supplied security patch.

Description :

According to its self-reported version number, the remote Juniper
Junos SRX series device is affected by a denial of service
vulnerability related to ALG (Application Layer Gateway). A remote
attacker can exploit this issue by sending a specially crafted SIP
packet to an SRX series device, resulting in a crash of the 'flowd'
process. Repeated exploitation may result in the device becoming
unresponsive.

Note that this issue only affects devices with any ALGs enabled or if
flow-based processing for IPv6 traffic is enabled. All SRX devices,
except for SRX-HE devices, have the SIP ALG enabled by default.

See also :

https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10650

Solution :

Apply the relevant Junos software release or workaround referenced in
Juniper advisory JSA10650.

Risk factor :

High / CVSS Base Score : 7.8
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C)
CVSS Temporal Score : 6.8
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : true

Family: Junos Local Security Checks

Nessus Plugin ID: 78421 ()

Bugtraq ID: 70366

CVE ID: CVE-2014-3825

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