Cisco ASA up to 8.4 Command Line Interface EpicBanana/JetPlow privileges management

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

A vulnerability has been found in Cisco ASA up to 8.4 (Firewall Software) and classified as critical. This vulnerability affects an unknown function of the component Command Line Interface. The manipulation with an unknown input leads to a privileges management vulnerability (EpicBanana/JetPlow). The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Cisco Adaptive Security Appliance (ASA) Software before 8.4(1) on ASA 5500, ASA 5500-X, PIX, and FWSM devices allows local users to gain privileges via invalid CLI commands, aka Bug ID CSCtu74257 or EPICBANANA.

The weakness was disclosed 08/17/2016 with Shadow Brokers as cisco-sa-20160817-asa-cli / CSCtu74257 as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. The advisory contains:

On August 15, 2016, Cisco was alerted to information posted online by the Shadow Brokers group, which claimed to possess disclosures from the Equation Group. The posted materials included exploits for firewall products from multiple vendors. The Cisco products mentioned were the PIX and ASA firewalls.
This vulnerability was named CVE-2016-6367. The exploitation appears to be easy. The attack needs to be approached locally. The successful exploitation requires a single authentication. Technical details are unknown but a public exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/14/2022). The MITRE ATT&CK project declares the attack technique as T1068. This vulnerability has a historic impact due to its background and reception.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 93347 (Cisco ASA Software CLI Invalid Command Invocation (cisco-sa-20160817-asa-cli) (EPICBANANA)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO. This issue was added on 05/24/2022 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 06/14/2022:

Apply updates per vendor instructions.

Upgrading to version 8.4(1) eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (93347) and Exploit-DB (40271). The entries 90834 and 90833 are pretty similar.

Productinfo

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Support

  • end of life (old version)

CPE 2.3info

CPE 2.2info

CVSSv4info

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

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.4

VulDB Base Score: 7.8
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Name: EpicBanana/JetPlow
Class: Privileges management / EpicBanana/JetPlow
CWE: CWE-269 / CWE-266
ATT&CK: T1068

Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 93347
Nessus Name: Cisco ASA Software CLI Invalid Command Invocation (cisco-sa-20160817-asa-cli) (EPICBANANA)
Nessus File: 🔍
Nessus Family: 🔍

OpenVAS ID: 800316
OpenVAS Name: Cisco Adaptive Security Appliance CLI Remote Code Execution Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: ASA 8.4(1)

Timelineinfo

07/26/2016 🔍
08/15/2016 +20 days 🔍
08/17/2016 +2 days 🔍
08/17/2016 +0 days 🔍
08/18/2016 +1 days 🔍
08/18/2016 +0 days 🔍
09/14/2022 +2218 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20160817-asa-cli / CSCtu74257
Organization: Shadow Brokers
Status: Confirmed

CVE: CVE-2016-6367 (🔍)
SecurityTracker: 1036636 - Cisco ASA Command Line Interface Bug Lets Local Users Deny Service and Gain Elevated Privileges
SecurityFocus: 92520

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 08/18/2016 10:27
Updated: 09/14/2022 07:34
Changes: 08/18/2016 10:27 (55), 07/14/2017 10:09 (20), 09/14/2022 07:28 (4), 09/14/2022 07:34 (10)
Complete: 🔍

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