CVE-2018-4233

unknown

Published — · Modified —

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

1.0

Description

An issue was discovered in certain Apple products. iOS before 11.4 is affected. Safari before 11.1.1 is affected. iCloud before 7.5 on Windows is affected. iTunes before 12.7.5 on Windows is affected. tvOS before 11.4 is affected. watchOS before 4.3.1 is affected. The issue involves the "WebKit" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site.

Predictions

Exploit likelihood

90%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-45998 remote macos verified

Metasploit · 2018-12-14

Safari - Proxy Object Type Confusion (Metasploit)

Source code queued for fetch — refresh in a moment.

Metasploit modules

exploit_osx/browser/safari_proxy_object_type_confusion rank

Safari Proxy Object Type Confusion

Source fetch failed: fetch_error — view the original via the link above.

exploit_apple_ios/browser/webkit_createthis rank

Safari Webkit Proxy Object Type Confusion

Source fetch failed: fetch_error — view the original via the link above.

OS impact

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`2.20.3-1`
sid	Fixed	`2.20.3-1`
forky	Fixed	`2.20.3-1`
bullseye	Fixed	`2.20.3-1`
bookworm	Fixed	`2.20.3-1`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.