Juniper Junos 13.3R3/14.1R1 IPv4 Port Matching Filter code

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Juniper Junos 13.3R3/14.1R1 and classified as critical. This vulnerability affects unknown code of the component IPv4 Port Matching Filter. Executing a manipulation can lead to an unknown weakness. This vulnerability is tracked as CVE-2014-6383. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Juniper Junos 13.3R3/14.1R1 (Router Operating System). It has been declared as critical. This vulnerability affects an unknown code of the component IPv4 Port Matching Filter. The manipulation with an unknown input leads to a code vulnerability. The CWE definition for the vulnerability is CWE-17. As an impact it is known to affect confidentiality, and integrity. CVE summarizes:

The stateless firewall in Juniper Junos 13.3R3, 14.1R1, and 14.1R2, when using Trio-based PFE modules, does not properly match ports, which might allow remote attackers to bypass firewall rule.

The weakness was disclosed 01/15/2015 as JSA10666 as confirmed advisory (Website). The advisory is shared for download at kb.juniper.net. The advisory contains:

This issue is being tracked as PR 1003494 ?and is visible on the Customer Support website.
This vulnerability was named CVE-2014-6383 since 09/11/2014. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The advisory points out:
When configuring a stateless firewall filter on a system with Trio-based PFE modules (e.g. MX Series), any source or destination port matching condition may fail to match intended packets, causing the filter to not execute the actions specified in the 'then' clause.???? Depending on the intent and design of the interface filter, this match failure may have unexpected impact on the router or follow-on filter clauses. For example, if traffic with a specific destination port was designed to be accepted, a later "reject all" clause may inadvertently discard wanted traffic. Conversely, if certain destination ports are meant to be dropped, malicious traffic may be consumed by the RE or forwarded on to downstream routers.

The vulnerability scanner Nessus provides a plugin with the ID 80954 , which helps to determine the existence of the flaw in a target environment. It is .

Upgrading to version 13.3R3-S3, 13.3R4, 14.1R3 or 14.2R1 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (100232), Tenable (80954), SecurityFocus (BID 72071†), SecurityTracker (ID 1031549†) and Vulnerability Center (SBV-48060†). The entries VDB-68631 and VDB-68630 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.5
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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VulDB Reliability: 🔍

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Exploitinginfo

Class: Code
CWE: CWE-17
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 80954
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Port: 🔍

OpenVAS ID: 802738
OpenVAS Name: Junos Firewall Bypass Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Junos 13.3R3-S3/13.3R4/14.1R3/14.2R1

Timelineinfo

09/11/2014 🔍
01/14/2015 +125 days 🔍
01/14/2015 +0 days 🔍
01/15/2015 +1 days 🔍
01/15/2015 +0 days 🔍
01/15/2015 +0 days 🔍
01/16/2015 +1 days 🔍
01/16/2015 +0 days 🔍
01/23/2015 +7 days 🔍
03/02/2022 +2595 days 🔍

Sourcesinfo

Vendor: juniper.net

Advisory: JSA10666
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-6383 (🔍)
GCVE (CVE): GCVE-0-2014-6383
GCVE (VulDB): GCVE-100-68632
X-Force: 100232 - Juniper Junos stateless firewall security bypass, Medium Risk
SecurityFocus: 72071 - Juniper Junos CVE-2014-6383 Security Bypass Vulnerability
SecurityTracker: 1031549 - Juniper Junos Does Not Properly Enforce IPv4 Stateless Port Matching Filters
Vulnerability Center: 48060 - Juniper Junos Remote Bypass Restrictions due to Firewall Filter Failure in Matching Intended Packets, Medium

See also: 🔍

Entryinfo

Created: 01/16/2015 14:25
Updated: 03/02/2022 15:34
Changes: 01/16/2015 14:25 (77), 04/29/2019 07:04 (5), 03/02/2022 15:34 (3)
Complete: 🔍
Cache ID: 216:F1E:103

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