Exploited vulnerability · CISA KEV

Is CVE-2023-24489 exploited? Yes: in CISA KEV since 16 Aug 2023

Gociux · Citrix Content Collaboration · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2023-24489, Citrix Content Collaboration ShareFile Improper Access Control Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 16 Aug 2023, 37 days after it was published. It affects Citrix Content Collaboration, an internet-facing product of the kind attackers use for initial access. If you run it, CISA's required action is: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

What it is

Citrix Content Collaboration contains an improper access control vulnerability that could allow an unauthenticated attacker to remotely compromise customer-managed ShareFile storage zones controllers.

What to do

1. Check whether you run it. Look for Content Collaboration in your asset inventory, including appliances and cloud images. Stack check lists every exploited Citrix CVE at once.
2. Apply the fix. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 10 Jul 2023.
4. Get told next time. Email alerts when CISA adds a CVE for Citrix.

References

• support.citrix.com/article/CTX559517/sharefile-storagezones-controller-securit
• nvd.nist.gov/vuln/detail/CVE-2023-24489

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in August 2023 · Citrix scorecard · act-now radar.