cbcvebase.
CVE-2023-37450
published 2023-07-27

CVE-2023-37450: The issue was addressed with improved checks. This issue is fixed in iOS 16.6 and iPadOS 16.6, Safari 16.5.2, tvOS 16.6, macOS Ventura 13.5, watchOS 9.6…

PriorityP189high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
KEVITW
CISA Known Exploited Vulnerabilitydue 2023-08-03
Exploited in the wild
EPSS
18.95%
97.0th percentile
The issue was addressed with improved checks. This issue is fixed in iOS 16.6 and iPadOS 16.6, Safari 16.5.2, tvOS 16.6, macOS Ventura 13.5, watchOS 9.6. Processing web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.

Affected

22 ranges
VendorProductVersion rangeFixed in
appleios_15.7.8_and_ipados
appleios_16.6_and_ipados
appleios_and_ipados>= unspecified < 16.616.6
appleipados< 16.616.6
appleiphone_os< 16.616.6
applemacos>= 13.0 < 13.513.5
applemacos>= unspecified < 13.513.5
applemacos_ventura
applerapid_security_responses_for_ios_16.5.1_and_ipados
applerapid_security_responses_for_macos_ventura
applesafari< 16.5.216.5.2
applesafari
applesafari>= unspecified < 16.516.5
appletvos< 16.616.6
appletvos
appletvos>= unspecified < 16.616.6
applewatchos< 9.69.6
applewatchos
applewatchos>= unspecified < 9.69.6
debianwebkit2gtk< webkit2gtk 2.40.3-2~deb12u2 (bookworm)webkit2gtk 2.40.3-2~deb12u2 (bookworm)
debianwpewebkit< webkit2gtk 2.40.3-2~deb12u2 (bookworm)webkit2gtk 2.40.3-2~deb12u2 (bookworm)
webkitgtkwebkitgtk< 2.42.32.42.3

Detection & IOCsextracted from sources · hover to see the quote

  • CVE-2023-37450 can be triggered by a vulnerable browser processing specially crafted web content, leading to arbitrary code execution via the WebKit engine
  • The vulnerability resides in the WebKit browser engine used by Safari and other web browsers on iOS, iPadOS, and macOS; any browser processing untrusted web content on affected Apple platforms is an attack surface
  • CVE-2023-37450 is confirmed actively exploited in the wild as a zero-day; prioritize detection of exploitation attempts against unpatched Apple WebKit-based browsers
  • Apple's emergency patch (Rapid Security Response) for CVE-2023-37450 was initially released July 11 for iPhones and iPads; systems still running pre-patch versions of iOS 16.6, iPadOS 16.6, Safari 16.5.2, tvOS 16.6, macOS Ventura 13.5, or watchOS 9.6 should be flagged as vulnerable
  • The WebKit component is the affected component; monitor for anomalous web content processing behavior or crashes in WebKit-based processes (e.g., com.apple.WebKit.WebContent) on Apple devices
  • ·Very few technical details about the exploit mechanism have been publicly disclosed; no specific IOCs (hashes, IPs, domains, URLs) have been attributed to exploitation of CVE-2023-37450 in the reviewed sources
  • ·Apple's initial Rapid Security Response patch caused Safari connectivity issues with major websites (Facebook, Instagram, Zoom) and was pulled back before a reliable fix was re-released; detection/patching pipelines should confirm the final fix version is applied, not the rolled-back RSR

CVSS provenance

nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
osv8.8HIGH
vulncheck8.8HIGH
cisa8.8HIGH
vendor_debian8.8HIGH
vendor_redhat8.8HIGH
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