DenyAll WAF up to 6.4.1 tail.php tailDateFile command injection

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.04

A vulnerability classified as critical has been found in DenyAll WAF up to 6.4.1. This affects the function tailDateFile of the file /webservices/stream/tail.php. 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 summary by CVE is:

DenyAll WAF before 6.4.1 allows unauthenticated remote command execution via TCP port 3001 because shell metacharacters can be inserted into the type parameter to the tailDateFile function in /webservices/stream/tail.php. An iToken authentication parameter is required but can be obtained by exploiting CVE-2017-14706. This affects DenyAll i-Suite LTS 5.5.0 through 5.5.12, i-Suite 5.6, Web Application Firewall 5.7, and Web Application Firewall 6.x before 6.4.1, with On Premises or AWS/Azure cloud deployments.

The bug was discovered 09/22/2017. The weakness was shared 09/22/2017 (Website). It is possible to read the advisory at exploit-db.com. This vulnerability is uniquely identified as CVE-2017-14705 since 09/22/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

A public exploit has been developed by Mehmet Ince and been published even before and not after the advisory. The exploit is shared for download 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 3 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:webservices/stream/tail.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Exploit-DB (42769). The entry VDB-107020 is related to this item.

Productinfo

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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: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 5.6
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔍

CVSSv2info

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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: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Mehmet Ince
Download: 🔍
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

09/19/2017 🔍
09/19/2017 +0 days 🔍
09/22/2017 +3 days 🔍
09/22/2017 +0 days 🔍
09/22/2017 +0 days 🔍
09/22/2017 +0 days 🔍
09/23/2017 +1 days 🔍
12/30/2022 +1924 days 🔍

Sourcesinfo

Advisory: exploit-db.com
Status: Not defined

CVE: CVE-2017-14705 (🔍)
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 09/23/2017 05:20 PM
Updated: 12/30/2022 08:03 AM
Changes: 09/23/2017 05:20 PM (65), 11/19/2019 08:09 AM (1), 12/30/2022 08:03 AM (4)
Complete: 🔍
Cache ID: 44:522:40

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