Background exploitation KEV catalog No authentication

CVE-2022-42856

Apple iOS Type Confusion Vulnerability

CheckOps priority index

5.6/10 Patch within 7 days

Severity8.8

Probability0.9

Exploitation3/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 8.5% higher than 95.0% of CVEs

CVSS 3.1 8.8 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:

Exploited for 1,420 days 14 Dec 2022

CISA due date 04 Jan 2023 for US federal agencies

Exploitation probability EPSS · FIRST

EPSS probability (%)Percentile among all CVEs

Exploitation signals 3 / 5

KEV catalog (CISA)14 Dec 2022
Exploited in EUVD (ENISA)14 Dec 2022
Used by ransomwareno
EPSS above 10 %8.5%
No account, over the networkyes

What to do

Fix

Apply the vendor’s fix as soon as it is available.

CISA guidance: Apply updates per vendor instructions.

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Description ENISA EUVD

A type confusion issue was addressed with improved state handling. This issue is fixed in Safari 16.2, tvOS 16.2, macOS Ventura 13.1, iOS 15.7.2 and iPadOS 15.7.2, iOS 16.1.2. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited against versions of iOS released before iOS 15.1..

Affected products

tvOSiOS

Affected versions

unspecified <16.1
unspecified <15.7
unspecified <16.2
unspecified <13.1

Weaknesses (CWE)

CWE-843

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

14 Dec 2022
Exploitation reported (ENISA)
14 Dec 2022
Added to the KEV catalog
15 Dec 2022
Published
04 Jan 2023
CISA remediation due date

References

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