VDB-92721 · CVE-2016-4922 · BID 93534

Juniper Junos up to 16.0 Command Line Interface command injection

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.9	$0-$5k	0.00

A vulnerability, which was classified as critical, was found in Juniper Junos up to 16.0 (Router Operating System). This affects some unknown processing of the component Command Line Interface. The manipulation with an unknown input leads to a command injection vulnerability. CWE is classifying the issue as CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was released 10/12/2016 as JSA10763 / 1027807 / 1117227 / 1061973 as confirmed knowledge base article (Website). The advisory is shared at kb.juniper.net. The public release was coordinated with Juniper. The knowledge base article contains:

These issues were found during internal product security testing.

This vulnerability is uniquely identified as CVE-2016-4922 since 05/18/2016. The exploitability is told to be easy. An attack has to be approached locally. Required for exploitation is a authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1202 for this issue. The advisory points out:

Certain combinations of Junos OS CLI commands and arguments have been found to be exploitable in a way that can allow unauthorized access to the operating system. This may allow any user with permissions to run these CLI commands the ability to achieve elevated privileges and gain complete control of the device.

The vulnerability scanner Nessus provides a plugin with the ID 94331 (Juniper Junos IPv6 Packet Handling Remote DoS (JSA10762)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Junos Local Security Checks and running in the context c.

Upgrading to version 12.1X46-D60, 12.1X47-D45, 12.3R12, 12.3X48-D35, 13.2R9, 13.3R9, 14.1R7, 14.1X53-D40, 14.1X55-D35, 14.2R5, 15.1F4, 15.1R3, 15.1X49-D60, 15.1X53-D70 or 16.1R1 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The knowledge base article contains the following remark:

Use access lists or firewall filters to limit access to the router's CLI only from trusted hosts. Restrict access to the CLI to only highly trusted administrators.

The vulnerability is also documented in the vulnerability database at Tenable (94331). Entry connected to this vulnerability is available at 92719.

Productinfo

Type

Router Operating System

Vendor

Juniper

Name

Junos

Version

16.0

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 8.4
CNA Vector (Juniper Networks, Inc.): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 94331
Nessus Name: Juniper Junos IPv6 Packet Handling Remote DoS (JSA10762)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802738
OpenVAS Name: Junos Multiple Privilege Escalation Vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Junos 12.1X46-D60/12.1X47-D45/12.3R12/12.3X48-D35/13.2R9/13.3R9/14.1R7/14.1X53-D40/14.1X55-D35/14.2R5/15.1F4/15.1R3/15.1X49-D60/15.1X53-D70/16.1R1

Timelineinfo

05/18/2016 🔍
10/12/2016 +147 days 🔍
10/12/2016 +0 days 🔍
10/12/2016 +0 days 🔍
10/14/2016 +2 days 🔍
10/15/2016 +1 days 🔍
10/27/2016 +12 days 🔍
10/13/2017 +351 days 🔍
09/26/2022 +1809 days 🔍

Sourcesinfo

Vendor: juniper.net

Advisory: JSA10763 / 1027807 / 1117227 / 1061973
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2016-4922 (🔍)
SecurityTracker: 1037013
SecurityFocus: 93534 - Juniper Junos CVE-2016-4922 Multiple Local Privilege Escalation Vulnerabilities

See also: 🔍

Entryinfo

Created: 10/15/2016 13:12
Updated: 09/26/2022 09:43
Changes: 10/15/2016 13:12 (74), 05/10/2019 18:02 (12), 09/26/2022 09:42 (3), 09/26/2022 09:43 (12)
Complete: 🔍