Apple Multiple Products WebKit Memory Corruption Vulnerability

A memory corruption vulnerability was addressed with improved locking. This issue is fixed in iOS 17.1.2 and iPadOS 17.1.2, macOS Sonoma 14.1.2, Safari 17.1.2. Processing web content may lead to arbitrary code execution. Apple is aware of…

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 9.3% higher than 95.4% of CVEs

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

Exploited for 1,065 days 04 Dec 2023

CISA due date 25 Dec 2023 for US federal agencies

Exploitation probability EPSS · FIRST

EPSS probability (%)Percentile among all CVEs

Exploitation signals 3 / 5

KEV catalog (CISA)04 Dec 2023
Exploited in EUVD (ENISA)04 Dec 2023
Used by ransomwareno
EPSS above 10 %9.3%
No account, over the networkyes

What to do

Fix

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

CISA guidance: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

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

Affected products

iOS and iPadOSmacOSSafariMultiple Products

Affected versions

unspecified <17.1
unspecified <14.1

Weaknesses (CWE)

CWE-787

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

30 Nov 2023
Published
04 Dec 2023
Exploitation reported (ENISA)
04 Dec 2023
Added to the KEV catalog
25 Dec 2023
CISA remediation due date

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