CVE-2019-8857 — The issue was addressed with improved validation when an iCloud Link is created

The issue was addressed with improved validation when an iCloud Link is created. This issue is fixed in iOS 13.3 and iPadOS 13.3. Live Photo audio and video data may be shared via iCloud links even if Live Photo is disabled in the Share Sheet carousel.

01What is this vulnerability?

The issue was addressed with improved validation when an iCloud Link is created. This issue is fixed in iOS 13.3 and iPadOS 13.3. Live Photo audio and video data may be shared via iCloud links even if Live Photo is disabled in the Share Sheet carousel.

02Affected products

Vendor	Product	Versions
Apple	iOS and iPadOS	unspecified

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2020-10-27T20:07:26.000Z
• Last modified: 2024-08-04T21:31:37.497Z

09References

• support.apple.com — https://support.apple.com/en-us/HT210785