Server-Side Request Forgery in Accellion FTA



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-27103
CWE-ID CWE-918
Exploitation vector Network
Public exploit Vulnerability #1 is being exploited in the wild.
Vulnerable software
 Accellion FTA
Server applications / File servers (FTP/HTTP)

Vendor Accellion

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Server-Side Request Forgery (SSRF)

EUVDB-ID: #VU50788

Risk: Medium

CVSSv4.0: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:A/U:Green]

CVE-ID: CVE-2021-27103

CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input in "wmProgressstat.html". A remote attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Accellion FTA: - - 9_12_411

CPE2.3 External links

https://github.com/accellion/CVEs/blob/main/CVE-2021-27103.txt
https://www.accellion.com/products/fta/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.



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