Attacks began the day after public disclosure
"Patch yesterday" is the advice from infosec researchers as the latest critical vulnerability affecting Zimbra mail servers is now being mass-exploited.
"Successful exploitation can lead to unauthorized access, privilege escalation, and potential compromise of the affected system's integrity and confidentiality," the researchers said. Its PoC exploit worked on ports 10027 and 25, and after some teething issues, it was proven to work remotely too, as evidenced by the exploit attempts since.on Tuesday the attacker, or attackers, is unknown, and"for unknown reasons" the same server used to send the malicious emails is also hosting the second-stage payload.
Like many of the recent vulnerabilities reported to the company behind the business email and collaboration platform, it has not yet been assigned a severity score.
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