VDB-106340 · CVE-2017-14251 · BID 100620

TYPO3 up to 7.6.21/8.7.4 File Upload SystemEnvironmentBuilder.php 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.
7.5$5k-$25k0.00

Summaryinfo

A vulnerability labeled as critical has been found in TYPO3 up to 7.6.21/8.7.4. This vulnerability affects unknown code of the file sysext/core/Classes/Core/SystemEnvironmentBuilder.php of the component File Upload. Such manipulation leads to unrestricted upload. This vulnerability is referenced as CVE-2017-14251. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in TYPO3 up to 7.6.21/8.7.4 (Content Management System) and classified as critical. Affected by this issue is an unknown part of the file sysext/core/Classes/Core/SystemEnvironmentBuilder.php of the component File Upload. The manipulation with an unknown input leads to a unrestricted upload vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Unrestricted File Upload vulnerability in the fileDenyPattern in sysext/core/Classes/Core/SystemEnvironmentBuilder.php in TYPO3 7.6.0 to 7.6.21 and 8.0.0 to 8.7.4 allows remote authenticated users to upload files with a .pht extension and consequently execute arbitrary PHP code.

The bug was discovered 09/05/2017. The weakness was published 09/11/2017 (Website). The advisory is shared for download at typo3.org. This vulnerability is handled as CVE-2017-14251 since 09/10/2017. The attack may be launched remotely. A simple authentication is necessary for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 01/11/2021). 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 6 days. During that time the estimated underground price was around $5k-$25k. By approaching the search of inurl:sysext/core/Classes/Core/SystemEnvironmentBuilder.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 SecurityFocus (BID 100620†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
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
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

OpenVAS ID: 100641
OpenVAS Name: TYPO3 Unrestricted File Upload Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/05/2017 🔍
09/06/2017 +1 days 🔍
09/10/2017 +4 days 🔍
09/11/2017 +1 days 🔍
09/11/2017 +0 days 🔍
09/11/2017 +0 days 🔍
01/11/2021 +1218 days 🔍

Sourcesinfo

Product: typo3.org

Advisory: typo3.org
Researcher: Maurizio Siddu
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-14251 (🔍)
GCVE (CVE): GCVE-0-2017-14251
GCVE (VulDB): GCVE-100-106340
SecurityFocus: 100620 - TYPO3 'fileDenyPattern' Arbitrary Code Execution Vulnerability
SecurityTracker: 1039295

Entryinfo

Created: 09/11/2017 16:17
Updated: 01/11/2021 15:30
Changes: 09/11/2017 16:17 (57), 11/14/2019 15:12 (10), 01/11/2021 15:23 (2), 01/11/2021 15:30 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Might our Artificial Intelligence support you?

Check our Alexa App!