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Exploited vulnerability · CISA KEV

Is CVE-2023-6345 exploited? Yes: in CISA KEV since 30 Nov 2023

Gociux · Google Chromium Skia · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2023-6345, Google Skia Integer Overflow Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 30 Nov 2023, 1 days after it was published. It affects Google Chromium Skia. 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 5%very likely to be exploited
severity9.6CVSS 3.1 · critical
US federal due21 Dec 2023BOD 22-01 deadline

What it is

Google Chromium Skia contains an integer overflow vulnerability that allows a remote attacker, who has compromised the renderer process, to potentially perform a sandbox escape via a malicious file. This vulnerability affects Google Chrome and ChromeOS, Android, Flutter, and possibly other products.

VendorGoogle (77 exploited CVEs in KEV)
ProductChromium Skia
VulnerabilityGoogle Skia Integer Overflow Vulnerability
WeaknessCWE-190
Published29 Nov 2023
Added to KEV30 Nov 2023
Reported by (CNA)Chrome

What to do

  1. Check whether you run it. Look for Chromium Skia in your asset inventory, including appliances and cloud images. Stack check lists every exploited Google 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 29 Nov 2023.
  4. Get told next time. Email alerts when CISA adds a CVE for Google.

Other exploited CVEs in Chromium Skia

References

Questions

Is CVE-2023-6345 being exploited?

Yes. CISA added CVE-2023-6345 to the Known Exploited Vulnerabilities catalog on 30 Nov 2023, which means there is reliable evidence of exploitation in the wild.

Is CVE-2023-6345 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-2023-6345?

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

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