Kingsoft VGM Antivirus Arbitrary File Read Scanner

Kingsoft VGM Antivirus is a security solution designed for businesses and individuals to protect their systems from viruses, malware, and other threats. It is used across various industries, including healthcare, finance, and education, to maintain system security and integrity. This antivirus solution is known for its comprehensive protection features, real-time scanning capabilities, and user-friendly interface. Organizations implement Kingsoft VGM Antivirus to ensure their confidential data and resources are shielded from potential cyberattacks. Additionally, this software is deployed to manage security across large networks effectively and efficiently. Businesses rely on its extensive database of virus signatures to safeguard against known vulnerabilities and prevent unauthorized access.

The Arbitrary File Read vulnerability allows attackers to gain unauthorized access to sensitive files stored on a server running the affected software. This type of vulnerability can be exploited to read files that are critical to system operation or contain private information, thereby compromising data security. Attackers can potentially use the access gained to further infiltrate or manipulate the server environment. Exploiting this vulnerability can lead to exposure of information, which could facilitate additional attacks or data theft. Consequently, it poses a significant risk to organizations using vulnerable software versions, emphasizing the need for prompt identification and remediation. Security professionals prioritize patching or updating applications susceptible to such vulnerabilities to mitigate potential threats.

Technical details of the vulnerability in Kingsoft VGM Antivirus involve manipulating requests to exploit the downFile.php endpoint. This endpoint, vulnerable to path traversal, allows attackers to access unauthorized files by altering the file path in the URL. The vulnerable parameter 'filename' is easily manipulated to traverse directories and potentially read sensitive files such as /etc/passwd. Matchers in the detection template check for specific patterns and response headers to confirm the presence of the vulnerability. Successful exploitation is determined by the ability to fetch data from the target server without appropriate authorization. The response status and presence of critical file contents in the server's response signify a vulnerable condition.

If successfully exploited by malicious actors, this vulnerability can lead to unauthorized disclosure of files containing sensitive system or user information. Access to system files like /etc/passwd may enable attackers to further exploit or gain administrative accesses, potentially leading to complete system compromise. It heightens the risk of data breaches, privacy violations, and unauthorized modifications to the system infrastructure. Such exploitation can impair business operations, incur financial losses, and damage organizational reputation. Moreover, exposure of confidential client data could breach regulatory compliance requirements, resulting in legal penalties and loss of customer trust.

REFERENCES

• https://mp.weixin.qq.com/s?__biz=MzkyMjE3MjEyNQ==&mid=2247486073&idx=1&sn=8e61e162262585bb8ce973b61df989b4&chksm=c1f925cbf68eacddfe441b8f1861e88068039712e467fb9bbe91eae31d439286c7147d197b07
• https://github.com/zan8in/afrog/blob/main/v2/pocs/afrog-pocs/vulnerability/kongsoft-vgm-antivirus-wall-rce.yaml