CVE-2021-27860 FatPipe WARP, IPVPN, and MPVPN software: dangerous file upload
In plain words: The program accepts files it should refuse, such as programs disguised as ordinary uploads. The attacker can place and run their own tools on the server.
Confirmed exploited by CISA on · US federal patch deadline Jan 24, 2022
What to do
- Install FatPipe's security update for WARP, IPVPN, and MPVPN software. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Keep a list of every internet-facing server you run so nothing is forgotten.
- Patch anything in this catalog first, ahead of normal patch cycles.
- Put admin and file-transfer apps behind a VPN or single sign-on instead of the open internet.
Who is affected
Work IT. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.
What's at risk: Mass data theft and ransomware: a single flaw in a file-transfer or email server has exposed thousands of organisations at once.
The details
- Official name
- FatPipe WARP, IPVPN, and MPVPN Configuration Upload exploit
- Product
- FatPipe WARP, IPVPN, and MPVPN software
- CISA description
- 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.
- Type of flaw
- Dangerous file upload (CWE-434)
- Confirmed exploited
- Jan 10, 2022
- US federal patch deadline
- Jan 24, 2022
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Answering about CVE-2021-27860 ·
Questions about CVE-2021-27860
Is CVE-2021-27860 being exploited?
Yes. CISA added CVE-2021-27860 to its Known Exploited Vulnerabilities catalog on Jan 10, 2022, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2021-27860?
Install FatPipe's security update for WARP, IPVPN, and MPVPN software. If no update exists, follow the vendor's workaround or stop using the product until one ships. Keep a list of every internet-facing server you run so nothing is forgotten.
Am I affected by CVE-2021-27860?
Only if you use FatPipe WARP, IPVPN, and MPVPN software. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.