CVE-2024-45519 Synacor Zimbra Collaboration Suite (ZCS): login or permission bypass
In plain words: A door that should be locked is not: part of the system can be reached without a valid login or permission. The attacker gets in as a user or administrator without knowing a password.
Confirmed exploited by CISA on · US federal patch deadline Oct 24, 2024
What to do
- Install Synacor's security update for Zimbra Collaboration Suite (ZCS). 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
- Synacor Zimbra Collaboration Suite (ZCS) Command Execution Vulnerability
- Product
- Synacor Zimbra Collaboration Suite (ZCS)
- CISA description
- Synacor Zimbra Collaboration Suite (ZCS) contains an unspecified vulnerability in the postjournal service that may allow an unauthenticated user to execute commands.
- Type of flaw
- Login or permission bypass (CWE-284)
- Confirmed exploited
- Oct 3, 2024
- US federal patch deadline
- Oct 24, 2024
Ask Cleus about it
Ask about a vulnerability, an update, a weird message, or the news. Plain-word answers, free, no account.
Answering about CVE-2024-45519 ·
Questions about CVE-2024-45519
Is CVE-2024-45519 being exploited?
Yes. CISA added CVE-2024-45519 to its Known Exploited Vulnerabilities catalog on Oct 3, 2024, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2024-45519?
Install Synacor's security update for Zimbra Collaboration Suite (ZCS). 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-2024-45519?
Only if you use Synacor Zimbra Collaboration Suite (ZCS). Aimed mostly at company systems — you are affected through the companies you use, not your own phone.