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Apple Multiple Products Integer Overflow or Wraparound Vulnerability

CVE-2021-30952

What this means

This is rated high severity (7.8 out of 10). It is on the known-exploited catalogue, which means attacks using it have already been seen. Ask IT whether Apple Safari, Apple Ipados and Apple Iphone Os, and 7 more are in your estate, and treat that as the priority.

Full vendor description

An integer overflow was addressed with improved input validation. This issue is fixed in tvOS 15.2, macOS Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing maliciously crafted web content may lead to arbitrary code execution.

Scoring and exploitation

7.8/ 10
CVSS 3.1 base scoreHigh

Exploitable only with local access without any account, but only if a user takes an action, such as opening a file or link. High impact on confidentiality, integrity and availability.

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitability

Longer bar: easier to attack

Attack vectorLocalAV:L
Attack complexityLowAC:L
Privileges requiredNonePR:N
User interactionRequiredUI:R
ScopeUnchangedS:U

Impact

Longer bar: more harm

ConfidentialityHighC:H
IntegrityHighI:H
AvailabilityHighA:H
~7% estimated chance of attack in 30 daysModel estimate (): a probability signal, not confirmed exploitation
Exploited in the wild
Yes — confirmed exploitation (US CISA )
Not reported
Listed product
Apple Multiple Products

Weaknesses

CWE-190

Affected products ()

  • Apple Safari
  • Apple Ipados
  • Apple Iphone Os
  • Apple Macos
  • Apple Tvos
  • Apple Watchos
  • Fedoraproject Fedora
  • Debian Debian Linux
  • Webkitgtk Webkitgtk
  • Wpewebkit Wpe Webkit
Show the raw CPE strings (12)
  • cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
  • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
  • cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
  • cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
  • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
  • cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
  • cpe:2.3:a:webkitgtk:webkitgtk:*:*:*:*:*:*:*:*
  • cpe:2.3:a:wpewebkit:wpe_webkit:*:*:*:*:*:*:*:*

References

20 links from the CVE record, grouped by site; the vendor's advisory comes first.

Related feed events

  • Apple Multiple Products Integer Overflow or Wraparound Vulnerability

    Type Vulnerability

    Apple tvOS, macOS, Safari, iPadOS and watchOS contain an integer overflow or wraparound vulnerability due to the processing of maliciously crafted web content that may lead to arbitrary code…

    Next step: Confirm whether Apple Multiple Products is in your estate.

    Who's reporting

    1 of 3 perspectives

    Official authority: Official 1Vendor statement missing. no VendorResearcher coverage missing. no Researcher1 signal

    Only official coverage so far. Treat as an early signal.

    Apple Multiple Products
    CVE-2021-30952