DotClear up to 2.10.2 ZIP File fileUnzip->unzip unrestricted upload

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.
7.4$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in DotClear up to 2.10.2. This vulnerability affects the function fileUnzip->unzip of the component ZIP File Handler. Executing a manipulation can lead to unrestricted upload. This vulnerability is tracked as CVE-2016-7902. The attack can be launched remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical was found in DotClear up to 2.10.2 (Blog Software). This vulnerability affects the function fileUnzip->unzip of the component ZIP File Handler. The manipulation with an unknown input leads to a unrestricted upload vulnerability. The CWE definition for the vulnerability is CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Unrestricted file upload vulnerability in the fileUnzip->unzip method in Dotclear before 2.10.3 allows remote authenticated users with permissions to manage media items to execute arbitrary code by uploading a ZIP file containing a file with a crafted extension, as demonstrated by .php.txt or .php%20.

The bug was discovered 01/04/2016. The weakness was disclosed 01/04/2017 (oss-sec). The advisory is shared for download at openwall.com. This vulnerability was named CVE-2016-7902 since 09/09/2016. The attack can be initiated remotely. The successful exploitation requires a single authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1608.002.

The vulnerability was handled as a non-public zero-day exploit for at least 366 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 264204 (Linux Distros Unpatched Vulnerability : CVE-2016-7902), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.10.3 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (264204) and SecurityFocus (BID 93440†). The entry VDB-95033 is pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

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

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Unrestricted upload
CWE: CWE-434 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 264204
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2016-7902

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: DotClear 2.10.3

Timelineinfo

01/04/2016 🔍
09/09/2016 +249 days 🔍
10/05/2016 +26 days 🔍
01/04/2017 +91 days 🔍
01/04/2017 +0 days 🔍
01/05/2017 +1 days 🔍
09/13/2025 +3173 days 🔍

Sourcesinfo

Advisory: openwall.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-7902 (🔍)
GCVE (CVE): GCVE-0-2016-7902
GCVE (VulDB): GCVE-100-95032
SecurityFocus: 93440 - Dotclear CVE-2016-7902 Arbitrary File Upload Vulnerability

See also: 🔍

Entryinfo

Created: 01/05/2017 12:57
Updated: 09/13/2025 23:45
Changes: 01/05/2017 12:57 (61), 12/29/2019 21:02 (5), 09/13/2025 23:45 (20)
Complete: 🔍
Cache ID: 216:972:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Might our Artificial Intelligence support you?

Check our Alexa App!