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Exploited vulnerability · CISA KEV

Is CVE-2023-49103 exploited? Yes: in CISA KEV since 30 Nov 2023

Gociux · ownCloud graphapi · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2023-49103, ownCloud graphapi Information Disclosure Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 30 Nov 2023, 9 days after it was published. It affects ownCloud graphapi. If you run it, CISA's required action is: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

exploitedYesCISA KEV · 30 Nov 2023
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity10CVSS 3.1 · critical
US federal due21 Dec 2023BOD 22-01 deadline

What it is

ownCloud graphapi contains an information disclosure vulnerability that can reveal sensitive data stored in phpinfo() via GetPhpInfo.php, including administrative credentials.

VendorownCloud (2 exploited CVEs in KEV)
ProductownCloud graphapi
VulnerabilityownCloud graphapi Information Disclosure Vulnerability
Weaknessnot specified
Published21 Nov 2023
Added to KEV30 Nov 2023
Reported by (CNA)mitre

What to do

  1. Check whether you run it. Look for ownCloud graphapi in your asset inventory, including appliances and cloud images. Stack check lists every exploited ownCloud 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 21 Nov 2023.
  4. Get told next time. Email alerts when CISA adds a CVE for ownCloud.

References

Questions

Is CVE-2023-49103 being exploited?

Yes. CISA added CVE-2023-49103 to the Known Exploited Vulnerabilities catalog on 30 Nov 2023, which means there is reliable evidence of exploitation in the wild.

Is CVE-2023-49103 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-2023-49103?

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Check ownCloud's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected ownCloud graphapi 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 November 2023 · ownCloud scorecard · act-now radar.

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