phpMyAdmin up to 4.6.4/4.4.15.8/4.0.10.17 AllowRoot Restriction access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.9$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in phpMyAdmin up to 4.6.4/4.4.15.8/4.0.10.17. The affected element is an unknown function of the component AllowRoot Restriction. The manipulation leads to access control. This vulnerability is uniquely identified as CVE-2016-9849. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in phpMyAdmin up to 4.6.4/4.4.15.8/4.0.10.17 (Database Administration Software). It has been rated as critical. This issue affects an unknown functionality of the component AllowRoot Restriction. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in phpMyAdmin. It is possible to bypass AllowRoot restriction ($cfg['Servers'][$i]['AllowRoot']) and deny rules for username by using Null Byte in the username. All 4.6.x versions (prior to 4.6.5), 4.4.x versions (prior to 4.4.15.9), and 4.0.x versions (prior to 4.0.10.18) are affected.

The bug was discovered 12/06/2016. The weakness was disclosed 12/11/2016 by Emanuel Bronshtein (Website). It is possible to read the advisory at securityfocus.com. The identification of this vulnerability is CVE-2016-9849 since 12/06/2016. The attack may be initiated remotely. The successful exploitation needs a simple authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 96093 (Debian DLA-757-1 : phpmyadmin 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 176993 (Debian Security Update for phpmyadmin (DLA 1821-1)).

Upgrading to version 4.6.5, 4.4.15.9 or 4.0.10.18 eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (96093) and SecurityFocus (BID 94521†). The entries VDB-94038, VDB-94039, VDB-94043 and VDB-94044 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 96093
Nessus Name: Debian DLA-757-1 : phpmyadmin security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 103230
OpenVAS Name: phpMyAdmin Multiple Security Vulnerabilities - 04 - Dec16 (Windows)
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: 🔍

Upgrade: phpMyAdmin 4.6.5/4.4.15.9/4.0.10.18

Timelineinfo

11/25/2016 🔍
12/06/2016 +11 days 🔍
12/06/2016 +0 days 🔍
12/10/2016 +4 days 🔍
12/11/2016 +1 days 🔍
12/11/2016 +0 days 🔍
12/24/2016 +13 days 🔍
12/27/2016 +3 days 🔍
10/05/2022 +2108 days 🔍

Sourcesinfo

Product: phpmyadmin.net

Advisory: DLA 1821-1⛔
Researcher: Emanuel Bronshtein
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-9849 (🔍)
GCVE (CVE): GCVE-0-2016-9849
GCVE (VulDB): GCVE-100-94067
SecurityFocus: 94521 - phpMyAdmin PMASA-2016-60 Remote Multiple Security Bypass Vulnerabilities

See also: 🔍

Entryinfo

Created: 12/11/2016 09:12
Updated: 10/05/2022 15:48
Changes: 12/11/2016 09:12 (75), 06/25/2019 16:38 (7), 10/05/2022 15:48 (3)
Complete: 🔍
Cache ID: 216::103

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