VDB-111588 · CVE-2014-4994 · GCVE-0-2014-4994

gyazo Gem 1.0.0 on Ruby Temp File lib/gyazo/client.rb 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.
5.4	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in gyazo Gem 1.0.0 on Ruby. This issue affects some unknown processing in the library lib/gyazo/client.rb of the component Temp File Handler. The manipulation results in input validation. This vulnerability was named CVE-2014-4994. The attack needs to be approached locally. There is no available exploit.

Detailsinfo

A vulnerability was found in gyazo Gem 1.0.0 on Ruby (Ruby Gem). It has been classified as problematic. Affected is an unknown functionality in the library lib/gyazo/client.rb of the component Temp File Handler. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

lib/gyazo/client.rb in the gyazo gem 1.0.0 for Ruby allows local users to write to arbitrary files via a symlink attack on a temporary file, related to time-based filenames.

The bug was discovered 07/07/2014. The weakness was presented 01/10/2018 (oss-sec). The advisory is shared for download at openwall.com. This vulnerability is traded as CVE-2014-4994 since 07/17/2014. The attack needs to be approached locally. The successful exploitation needs a authentication. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 1283 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Ruby Gem

Name

gyazo Gem

Version

1.0.0

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.4

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

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/07/2014 🔍
07/17/2014 +10 days 🔍
01/10/2018 +1273 days 🔍
01/10/2018 +0 days 🔍
01/11/2018 +1 days 🔍
12/21/2019 +709 days 🔍

Sourcesinfo

Advisory: openwall.com
Status: Not defined

CVE: CVE-2014-4994 (🔍)
GCVE (CVE): GCVE-0-2014-4994
GCVE (VulDB): GCVE-100-111588

Entryinfo

Created: 01/11/2018 08:01
Updated: 12/21/2019 08:11
Changes: 01/11/2018 08:01 (58), 12/21/2019 08:11 (1)
Complete: 🔍
Cache ID: 216::103