VDB-112804 · CVE-2017-18123 · Nessus 106592

DokuWiki up to 2017-02-19e /lib/exe/ajax.php call Reflected input validation

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.
7.2	$0-$5k	0.82

Summaryinfo

A vulnerability was found in DokuWiki up to 2017-02-19e. It has been declared as critical. Affected is an unknown function in the library /lib/exe/ajax.php. Executing a manipulation of the argument call as part of Parameter can lead to input validation (Reflected). The identification of this vulnerability is CVE-2017-18123. The attack can only be executed locally. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in DokuWiki up to 2017-02-19e (Content Management System). It has been declared as critical. This vulnerability affects some unknown processing in the library /lib/exe/ajax.php. The manipulation of the argument call as part of a Parameter leads to a input validation vulnerability (Reflected). The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The call parameter of /lib/exe/ajax.php in DokuWiki through 2017-02-19e does not properly encode user input, which leads to a reflected file download vulnerability, and allows remote attackers to run arbitrary programs.

The bug was discovered 02/02/2018. The weakness was shared 02/03/2018 (Website). The advisory is shared for download at lists.debian.org. This vulnerability was named CVE-2017-18123 since 02/02/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:lib/exe/ajax.php it is possible to find vulnerable targets with Google Hacking. The vulnerability scanner Nessus provides a plugin with the ID 106592 (Debian DLA-1269-1 : dokuwiki security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 277493 (Fedora Security Update for dokuwikia (FEDORA-2018-be9f4838dd)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 1 days after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (106592). The entries VDB-93194, VDB-104860, VDB-105622 and VDB-105623 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Content Management System

Name

DokuWiki

Version

2017-02-19e

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.2

VulDB Base Score: 6.1
VulDB Temp Score: 5.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.6
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Name: Reflected
Class: Input validation / Reflected
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 106592
Nessus Name: Debian DLA-1269-1 : dokuwiki security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 56401
OpenVAS Name: Debian Lts Announce DLA 1269-1 ([SECURITY] [DLA 1269-1] dokuwiki security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Patch: github.com

Timelineinfo

02/02/2018 🔍
02/02/2018 +0 days 🔍
02/03/2018 +1 days 🔍
02/03/2018 +0 days 🔍
02/04/2018 +1 days 🔍
02/05/2018 +1 days 🔍
02/05/2018 +0 days 🔍
02/03/2023 +1824 days 🔍