CVE-2021-27860
Published on December 8, 2021
Arbitrary file upload vulnerability in FatPipe software
A vulnerability in the web management interface of FatPipe WARP, IPVPN, and MPVPN software prior to versions 10.1.2r60p92 and 10.2.2r44p1 allows a remote, unauthenticated attacker to upload a file to any location on the filesystem. The FatPipe advisory identifier for this vulnerability is FPSA006.
Known Exploited Vulnerability
This FatPipe WARP, IPVPN, and MPVPN Configuration Upload exploit vulnerability is part of CISA's list of Known Exploited Vulnerabilities. A vulnerability in the web management interface of FatPipe WARP, IPVPN, and MPVPN software allows a remote, unauthenticated attacker to upload a file to any location on the filesystem.
The following remediation steps are recommended / required by January 24, 2022: Apply updates per vendor instructions.
Vulnerability Analysis
CVE-2021-27860 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors in an automatable fashion. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Type
What is an Unrestricted File Upload Vulnerability?
The software allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment.
CVE-2021-27860 has been classified to as an Unrestricted File Upload vulnerability or weakness.
Affected Versions
FatPipe WARP:- Version 10.1 and below 10.1.2r60p92 is affected.
- Version 10.2 and below 10.2.2r44p1 is affected.
- Version 10.1 and below 10.1.2r60p92 is affected.
- Version 10.2 and below 10.2.2r44p1 is affected.
- Version 10.1 and below 10.1.2r60p92 is affected.
- Version 10.2 and below 10.2.2r44p1 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.