Menu

  • Alerts
  • Incidents
  • News
  • APTs
  • Cyber Decoded
  • Cyber Hygiene
  • Cyber Review
  • Cyber Tips
  • Definitions
  • Malware
  • Threat Actors
  • Tutorials

Useful Tools

  • Password generator
  • Report an incident
  • Report to authorities
No Result
View All Result
CTF Hack Havoc
CyberMaterial
  • Education
    • Cyber Decoded
    • Definitions
  • Information
    • Alerts
    • Incidents
    • News
  • Insights
    • Cyber Hygiene
    • Cyber Review
    • Tips
    • Tutorials
  • Support
    • Contact Us
    • Report an incident
  • About
    • About Us
    • Advertise with us
Get Help
Hall of Hacks
  • Education
    • Cyber Decoded
    • Definitions
  • Information
    • Alerts
    • Incidents
    • News
  • Insights
    • Cyber Hygiene
    • Cyber Review
    • Tips
    • Tutorials
  • Support
    • Contact Us
    • Report an incident
  • About
    • About Us
    • Advertise with us
Get Help
No Result
View All Result
Hall of Hacks
CyberMaterial
No Result
View All Result
Home Alerts

Zimbra Email Vulnerability Exploited

November 17, 2023
Reading Time: 8 mins read
in Alerts
Zimbra Email Vulnerability Exploited

Zimbra Collaboration email software fell victim to real-world attacks orchestrated by four distinct hacker groups, exploiting a zero-day flaw tracked as CVE-2023-37580. Google Threat Analysis Group (TAG) disclosed that most exploitation occurred after the initial fix became public on GitHub, emphasizing the urgency of prompt patching.

Furthermore, the flaw, a reflected cross-site scripting (XSS) vulnerability impacting versions before 8.8.15 Patch 41, allowed attackers to execute malicious scripts by tricking users into clicking on specially crafted URLs, reflecting the attack back to the user.

Discovered by Google TAG researcher Clément Lecigne, the exploits unfolded in multiple campaign waves starting June 29, 2023, with three campaigns observed before Zimbra’s advisory and the fourth detected a month after the patch release. The first campaign targeted a Greek government organization, deploying exploit URLs that delivered email-stealing malware previously seen in the EmailThief cyber espionage operation.

Additionally, the second group, identified as Winter Vivern, focused on government organizations in Moldova and Tunisia immediately after the patch release on July 5, linking them to prior exploits in Zimbra Collaboration and Roundcube. A third, unidentified group targeted a government organization in Vietnam, employing the bug to phish credentials before the patch release on July 25.

The fourth campaign, occurring on August 25, targeted a government organization in Pakistan, resulting in the exfiltration of Zimbra authentication tokens to the remote domain “ntcpk[.]org”.

Google TAG highlighted a concerning pattern of threat actors exploiting XSS vulnerabilities in mail servers, underscoring the need for comprehensive audits of such applications. The discovery of four campaigns exploiting CVE-2023-37580, especially three after the bug became public, underscores the critical importance of organizations promptly applying fixes to secure their mail servers against opportunistic attacks.

Reference:

  • Zimbra 0-day used to target international government organizations
Tags: AttackersCyber AlertCyber Alerts 2023Cyber AttacksCybersecurityGitHubGoogleNovember 2023TAGVulnerabilitieszero-day vulnerabilityZimbra
ADVERTISEMENT

Related Posts

COLDRIVER Hackers Target Sensitive Data

COLDRIVER Hackers Target Sensitive Data

May 8, 2025
COLDRIVER Hackers Target Sensitive Data

Cisco Fixes Flaw in IOS Wireless Controller

May 8, 2025
COLDRIVER Hackers Target Sensitive Data

CoGUI Targets Consumer and Finance Brands

May 8, 2025
Critical Kibana Flaws Allows Code Execution

Mirai Botnet Exploits Vulnerabilities in IoT

May 7, 2025
Critical Kibana Flaws Allows Code Execution

Critical Kibana Flaws Allows Code Execution

May 7, 2025
Critical Kibana Flaws Allows Code Execution

New OttoKit Flaw Targets WordPress Sites

May 7, 2025

Latest Alerts

CoGUI Targets Consumer and Finance Brands

COLDRIVER Hackers Target Sensitive Data

Cisco Fixes Flaw in IOS Wireless Controller

New OttoKit Flaw Targets WordPress Sites

Mirai Botnet Exploits Vulnerabilities in IoT

Critical Kibana Flaws Allows Code Execution

Subscribe to our newsletter

    Latest Incidents

    Masimo Cyberattack Disrupts Manufacturing

    Cyberattack Targets Tepotzotlán Facebook

    West Lothian Schools Hit by Ransomware

    UK Legal Aid Agency Faces Cyber Incident

    South African Airways Hit by Cyberattack

    Coweta County School System Cyberattack

    CyberMaterial Logo
    • About Us
    • Contact Us
    • Jobs
    • Legal and Privacy Policy
    • Site Map

    © 2025 | CyberMaterial | All rights reserved

    Welcome Back!

    Login to your account below

    Forgotten Password?

    Retrieve your password

    Please enter your username or email address to reset your password.

    Log In

    Add New Playlist

    No Result
    View All Result
    • Alerts
    • Incidents
    • News
    • Cyber Decoded
    • Cyber Hygiene
    • Cyber Review
    • Definitions
    • Malware
    • Cyber Tips
    • Tutorials
    • Advanced Persistent Threats
    • Threat Actors
    • Report an incident
    • Password Generator
    • About Us
    • Contact Us
    • Advertise with us

    Copyright © 2025 CyberMaterial