Known exploited vulnerability
CVE-2022-24682
The short answer
CVE-2022-24682 affects n/a n/a and is rated medium (CVSS 6.1). CISA added it to the Known Exploited Vulnerabilities catalog on 2022-02-25: attackers are using it, so patch it first.
What it is
An issue was discovered in the Calendar feature in Zimbra Collaboration Suite 8.8.x before 8.8.15 patch 30 (update 1), as exploited in the wild starting in December 2021. An attacker could place HTML containing executable JavaScript inside element attributes. This markup becomes unescaped, causing arbitrary markup to be injected into the document.
Weakness: CWE-116.
Severity
6.1 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Exploited (CISA KEV)
Yes, since Feb 25, 2022
Federal due date Mar 11, 2022
EPSS, next 30 days
31%
Higher than 98% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality impact
- Low
- Integrity impact
- Low
- Availability impact
- None
What CISA says to do
Apply updates per vendor instructions.
Affected products
n/a. NVD's record lists the exact affected versions.
References
- blog.zimbra.com/2022/02/hotfix-available-5-feb-for-zero-day-exploit-vulnerability-in-zimbra-8-8-15/ Vendor Advisory
- wiki.zimbra.com/wiki/Security_Center Vendor Advisory
- wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P30 Release NotesVendor Advisory
- wiki.zimbra.com/wiki/Zimbra_Security_Advisories Vendor Advisory
- www.volexity.com/blog/2022/02/03/operation-emailthief-active-exploitation-of-zero-day-xss-vulnerability-in-zimbra/ ExploitThird Party Advisory
- blog.zimbra.com/2022/02/hotfix-available-5-feb-for-zero-day-exploit-vulnerability-in-zimbra-8-8-15/ Vendor Advisory
- wiki.zimbra.com/wiki/Security_Center Vendor Advisory
- wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P30 Release NotesVendor Advisory
- wiki.zimbra.com/wiki/Zimbra_Security_Advisories Vendor Advisory
- www.volexity.com/blog/2022/02/03/operation-emailthief-active-exploitation-of-zero-day-xss-vulnerability-in-zimbra/ ExploitThird Party Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-24682 US Government Resource
Questions
Is CVE-2022-24682 being exploited?
Yes. CISA added CVE-2022-24682 to its Known Exploited Vulnerabilities catalog on 2022-02-25, with a federal remediation due date of 2022-03-11. CISA lists it as used in ransomware campaigns.
How do I fix CVE-2022-24682?
CISA's required action: Apply updates per vendor instructions.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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