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

high Nessus Plugin ID 78421
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VPR Score: 5.9


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


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.


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

See Also

Plugin Details

Severity: High

ID: 78421

File Name: juniper_jsa10650.nasl

Version: 1.9

Type: combined

Published: 10/14/2014

Updated: 7/12/2018

Dependencies: junos_version.nasl

Risk Information

Risk Factor: High

VPR Score: 5.9

CVSS v2.0

Base Score: 7.8

Temporal Score: 5.8

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

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

Vulnerability Information

CPE: cpe:/o:juniper:junos

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/10/2014

Vulnerability Publication Date: 10/8/2014

Reference Information

CVE: CVE-2014-3825

BID: 70366

JSA: JSA10650