CVE-2021-27101 Accellion FTA: database injection
In plain words: Text typed into the app ends up changing the database query behind it. Reading, changing or stealing data from the database.
Confirmed exploited by CISA on · US federal patch deadline Nov 17, 2021
What to do
- Install Accellion's security update for FTA. 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
- Accellion FTA SQL Injection Vulnerability
- Product
- Accellion FTA
- CISA description
- Accellion FTA contains a SQL injection vulnerability exploited via a crafted host header in a request to document_root.html.
- Type of flaw
- Database injection (CWE-89, CWE-138)
- Confirmed exploited
- Nov 3, 2021 — known to be used in ransomware attacks
- US federal patch deadline
- Nov 17, 2021
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Answering about CVE-2021-27101 ·
Questions about CVE-2021-27101
Is CVE-2021-27101 being exploited?
Yes. CISA added CVE-2021-27101 to its Known Exploited Vulnerabilities catalog on Nov 3, 2021, which means there is reliable evidence of real-world attacks, including by ransomware groups.
How do I fix CVE-2021-27101?
Install Accellion's security update for FTA. 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-2021-27101?
Only if you use Accellion FTA. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.