CVE-2018-4233
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…
- 8.8HighCVSS base score
- 53.8%Exploitation in 30 daysEPSS · top 1.0% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 3Public exploitsMetasploit, Nuclei and Exploit-DB
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list 2 Metasploit modules and an Exploit-DB entry for it. A reference of the record is tagged as an exploit. CISA's SSVC rates its exploitation: a proof of concept is public.
Show the exploits4
Metasploit modules2 modules
- Safari Webkit Proxy Object Type Confusion (Metasploit module) (opens in a new tab)
exploit/apple_ios/browser/webkit_createthisRank manualdisclosed 15 Mar 2018
- Safari Proxy Object Type Confusion (Metasploit module) (opens in a new tab)
exploit/osx/browser/safari_proxy_object_type_confusionRank manualdisclosed 15 Mar 2018
Exploit-DB1 entry
- Safari - Proxy Object Type Confusion (Metasploit) (Exploit-DB entry) (opens in a new tab)
EDB-ID 45998remote, macospublished 14 Dec 2018Verified
References tagged exploit1 reference
- 45998 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By apple
- 5 months later
· 5 months later
Published
- 6 years later
· 6 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 53.8% · top 1.0% of all CVEs (9 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Affected products
n/a
- affected n/a
References
11
- https://support.apple.com/HT208850 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://support.apple.com/HT208853 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://support.apple.com/HT208851 (opens in a new tab)x_refsource_CONFIRMx_transferred
- GLSA-201808-04 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- https://support.apple.com/HT208854 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 1041029 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- USN-3687-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- https://support.apple.com/HT208848 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 45998 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- https://support.apple.com/HT208852 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://packetstormsecurity.com/files/153148/Safari-Webkit-Proxy-Object-Type-Confusion.html (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2018-16019 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2018-4233)Record last updated .