VDB-105620 · CVE-2017-12784 · EDB-ID 42518

YoungZSoft CC File Transfer 3.6 Request Header 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.
5.6	$0-$5k	0.00

Summaryinfo

A vulnerability was found in YoungZSoft CC File Transfer 3.6 and classified as problematic. This impacts an unknown function of the component Request Header Handler. Such manipulation with the input | leads to input validation. This vulnerability is referenced as CVE-2017-12784. It is possible to launch the attack remotely. Furthermore, an exploit is available. Restrictive firewalling should be applied.

Detailsinfo

A vulnerability was found in YoungZSoft CC File Transfer 3.6 (File Transfer Software) and classified as problematic. Affected by this issue is an unknown code of the component Request Header Handler. The manipulation with the input value | leads to a input validation vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. CVE summarizes:

In Youngzsoft CCFile (aka CC File Transfer) 3.6, by sending a crafted HTTP request, it is possible for a malicious user to remotely crash the affected software. No authentication is required. An example payload is a malformed request header with many '|' characters.

The bug was discovered 08/16/2017. The weakness was published 08/21/2017 as EDB-ID 42518 as not defined exploit (Exploit-DB). The advisory is shared for download at exploit-db.com. This vulnerability is handled as CVE-2017-12784 since 08/10/2017. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details as well as a public exploit are known.

After immediately, there has been an exploit disclosed. The exploit is available 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 5 days. During that time the estimated underground price was around $0-$5k.

Addressing this vulnerability is possible by firewalling .

The vulnerability is also documented in the vulnerability database at Exploit-DB (42518). Similar entries are available at VDB-105646, VDB-105647 and VDB-105648. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

File Transfer Software

Vendor

YoungZSoft

Name

CC File Transfer

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.1

VulDB Base Score: 5.3
VulDB Temp Score: 4.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

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: Firewall
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

08/10/2017 🔍
08/16/2017 +6 days 🔍
08/21/2017 +5 days 🔍
08/21/2017 +0 days 🔍
08/21/2017 +0 days 🔍
08/21/2017 +0 days 🔍
08/21/2017 +0 days 🔍
11/25/2019 +826 days 🔍