CVE-2018-4124

high-risk
Published 2018-04-03

An issue was discovered in certain Apple products. iOS before 11.2.6 is affected. macOS before 10.13.3 Supplemental Update is affected. tvOS before 11.2.6 is affected. watchOS before 4.2.3 is affected. The issue involves the "CoreText" component. It allows remote attackers to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact via a crafted string containing a certain Telugu character.

Do I need to act?

!
26.2% chance of exploitation in next 30 days
EPSS score — higher than 74% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (4)

Affected Vendors

Apple

References (12)

Third Party Advisory http://www.securitytracker.com/id/1040396
Third Party Advisory https://nakedsecurity.sophos.com/2018/02/20/apple-fixes-that-1-character-to-cras...
Vendor Advisory https://support.apple.com/HT208534
Vendor Advisory https://support.apple.com/HT208535
Vendor Advisory https://support.apple.com/HT208536
Vendor Advisory https://support.apple.com/HT208537
Third Party Advisory http://www.securitytracker.com/id/1040396
Third Party Advisory https://nakedsecurity.sophos.com/2018/02/20/apple-fixes-that-1-character-to-cras...
Vendor Advisory https://support.apple.com/HT208534
Vendor Advisory https://support.apple.com/HT208535
Vendor Advisory https://support.apple.com/HT208536
Vendor Advisory https://support.apple.com/HT208537
57
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 15/34 · Moderate
Exposure 10/34 · Low