Security News > 2023 > December > Barracuda fixes new ESG zero-day exploited by Chinese hackers
Network and email security firm Barracuda says it remotely patched all active Email Security Gateway appliances on December 21 against a zero-day bug exploited by UNC4841 Chinese hackers.
The company deployed a second wave of security updates a day later on already compromised ESG appliances where the attackers deployed SeaSpy and Saltwater malware.
Disclosed on Christmas Eve and tracked as CVE-2023-7102, the zero-day is due to a weakness in the Spreadsheet::ParseExcel third-party library used by the Amavis virus scanner running on Barracuda ESG appliances.
In May, the same hacker group used another zero-day to target Barracuda ESG appliances as part of a cyber-espionage campaign.
Google fixes 8th Chrome zero-day exploited in attacks this year.
Google Chrome emergency update fixes 7th zero-day exploited in 2023.
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Related Vulnerability
| DATE | CVE | VULNERABILITY TITLE | RISK |
|---|---|---|---|
| 2023-12-24 | CVE-2023-7102 | Unspecified vulnerability in Barracuda products Use of a Third Party library produced a vulnerability in Barracuda Networks Inc. | 9.8 |