This is a summary of the AI-generated 10-question deep analysis. The full version (longer answers, follow-up Q&A, related CVEs) requires login. Read the full analysis β
Q1What is this vulnerability? (Essence + Consequences)
π¨ **Essence**: Stored XSS in Zimbra Collaboration. π **Consequences**: Attackers inject malicious scripts via HTML emails.β¦
π‘οΈ **Root Cause**: Improper handling of **CSS import directives** in HTML emails. 𧬠**CWE**: CWE-79 (Improper Neutralization of Input During Web Page Generation).β¦
π’ **Vendor**: Zimbra. π¦ **Product**: Collaboration Platform. π **Affected Versions**: < **10.0.18** AND < **10.1.13**. If you are running any version prior to these releases, you are vulnerable.
Q4What can hackers do? (Privileges/Data)
π» **Attacker Actions**: Execute arbitrary JavaScript in the victim's context. π΅οΈ **Privileges**: Acts as the logged-in user.β¦
β‘ **Threshold**: LOW. π« **Auth**: No authentication required for the attacker to send the malicious email. π±οΈ **UI**: No user interaction needed to *inject* the payload (it's stored).β¦
π« **Public Exploit**: None listed in the provided data. π **POCs**: Empty array. While no public PoC is confirmed, the CVSS vector (AV:N/AC:L) suggests it is theoretically easy to exploit if the attack surface is known.
Q7How to self-check? (Features/Scanning)
π **Self-Check**: Scan for Zimbra versions < 10.0.18 or < 10.1.13. π§ **Feature Check**: Look for HTML emails containing suspicious `@import` CSS rules.β¦
π‘οΈ **Workaround**: If patching is delayed, implement strict **HTML sanitization** at the gateway level. Block or strip `@import` CSS directives in incoming emails.β¦
π₯ **Urgency**: HIGH. π **Priority**: Critical. With **CVSS:3.1/AV:N/AC:L/PR:N/UI:N**, this is a remote, low-complexity, no-auth vulnerability.β¦