Abstract
The Cloud computing is a powerful tool to optimize the cost in terms of hardware, controllable, utility to sharing the data, due to abovementioned features most of the organization switching their applications and services on the cloud. Cloud services offer secure and scalable services, but there is always some security problem when data have transmitted from a central storage server to a different cloud, personal and private data commitment increase risk of data confidentiality, integrity, availability, and authentication before one choose a vendor in the cloud or choose the cloud and move services in the cloud. This paper aims to resolve issues and provide the countermeasures relating to security issues in clouds based web applications. The vulnerability scores, its impact on confidentiality, integrity, availability, access complexity, and risk on assets calculated, and it observed most of the vulnerabilities identified during the scanning are related to security due to mis-configurations of web servers. The results analyzed for the vulnerability scores, vulnerabilities impact on confidentiality, integrity, availability, access complexity, and risk are analyzed description, and risk assessment. The countermeasures for each vulnerability based on the experimental results discussed.