Buffer overflow in Apple Iphone OS
CVE-2018-4124
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.059 (93.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 93.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.060 · newest: 0.059 · change: -0.001
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- support.apple.com/HT208534 (Vendor Advisory)
- support.apple.com/HT208537 (Vendor Advisory)
- support.apple.com/HT208535 (Vendor Advisory)
- www.securitytracker.com/id/1040396 (VDB Entry, Third Party Advisory, vdb-entry)
- nakedsecurity.sophos.com/2018/02/20/apple-fixes-that-1-character-to-crash-your-… (Third Party Advisory)
- support.apple.com/HT208536 (Vendor Advisory)
Frequently asked questions
- What is CVE-2018-4124?
- CVE-2018-4124 is a critical-severity vulnerability in Apple Iphone OS, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2018-04-03.
- How severe is CVE-2018-4124?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2018-4124 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.