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Exploited vulnerability · CISA KEV

Is CVE-2019-3568 exploited? Yes: in CISA KEV since 19 Apr 2022

Gociux · Meta Platforms WhatsApp · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2019-3568, WhatsApp VOIP Stack Buffer Overflow Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 19 Apr 2022, 1071 days after it was published. It affects Meta Platforms WhatsApp. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 19 Apr 2022
ransomwareNot knownno confirmed use
EPSStop 5%very likely to be exploited
severity9.8CVSS 3.1 · critical
US federal due10 May 2022BOD 22-01 deadline

What it is

A buffer overflow vulnerability in WhatsApp VOIP stack allowed remote code execution via specially crafted series of RTCP packets sent to a target phone number.

VendorMeta Platforms (3 exploited CVEs in KEV)
ProductWhatsApp
VulnerabilityWhatsApp VOIP Stack Buffer Overflow Vulnerability
WeaknessCWE-122
Published14 May 2019
Added to KEV19 Apr 2022
Reported by (CNA)facebook

What to do

  1. Check whether you run it. Look for WhatsApp in your asset inventory, including appliances and cloud images. Stack check lists every exploited Meta Platforms 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 14 May 2019.
  4. Get told next time. Email alerts when CISA adds a CVE for Meta Platforms.

Other exploited CVEs in WhatsApp

References

Questions

Is CVE-2019-3568 being exploited?

Yes. CISA added CVE-2019-3568 to the Known Exploited Vulnerabilities catalog on 19 Apr 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2019-3568 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-2019-3568?

Apply updates per vendor instructions. Check Meta Platforms's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected WhatsApp 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 April 2022 · Meta Platforms scorecard · act-now radar.

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