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Exploited vulnerability · CISA KEV

Is CVE-2021-37415 exploited? Yes: in CISA KEV since 1 Dec 2021

Gociux · Zoho ManageEngine ServiceDesk Plus (SDP) · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2021-37415, Zoho ManageEngine ServiceDesk Authentication Bypass Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 1 Dec 2021, 91 days after it was published. It affects Zoho ManageEngine ServiceDesk Plus (SDP). If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 1 Dec 2021
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity9.8CVSS 3.1 · critical
US federal due15 Dec 2021BOD 22-01 deadline

What it is

Zoho ManageEngine ServiceDesk Plus before 11302 is vulnerable to authentication bypass that allows a few REST-API URLs without authentication

VendorZoho (9 exploited CVEs in KEV)
ProductManageEngine ServiceDesk Plus (SDP)
VulnerabilityZoho ManageEngine ServiceDesk Authentication Bypass Vulnerability
WeaknessCWE-306
Published1 Sep 2021
Added to KEV1 Dec 2021
Reported by (CNA)mitre

What to do

  1. Check whether you run it. Look for ManageEngine ServiceDesk Plus (SDP) in your asset inventory, including appliances and cloud images. Stack check lists every exploited Zoho CVE at once.
  2. Apply the fix. Apply updates per vendor instructions.
  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 1 Sep 2021.
  4. Get told next time. Email alerts when CISA adds a CVE for Zoho.

References

Questions

Is CVE-2021-37415 being exploited?

Yes. CISA added CVE-2021-37415 to the Known Exploited Vulnerabilities catalog on 1 Dec 2021, which means there is reliable evidence of exploitation in the wild.

Is CVE-2021-37415 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2021-37415?

Apply updates per vendor instructions. Check Zoho's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected ManageEngine ServiceDesk Plus (SDP) and watch it for signs of compromise.

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 December 2021 · Zoho scorecard · act-now radar.

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