Buffer overflow in Apple Icloud
CVE-2020-3909
A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 13.4 and iPadOS 13.4, macOS Catalina 10.15.4, tvOS 13.4, watchOS 6.2, iTunes for Windows 12.10.5, iCloud for Windows 10.9.3, iCloud for Windows 7.18. Multiple issues in libxml2.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.030 (87.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.030 · newest: 0.030 · change: 0.000
Affected products
- Apple Icloud
- Apple Icloud For Windows — versions unspecified
- Apple Icloud For Windows (Legacy) — versions unspecified
- Apple iOS — versions unspecified
- Apple Ipados
- Apple Iphone OS
- Apple Itunes
- Apple Itunes For Windows — versions unspecified
- Apple macOS — versions unspecified
- Apple Mac OS X
Weakness classification (CWE)
References
- support.apple.com/HT211100 (Vendor Advisory)
- support.apple.com/HT211102 (Vendor Advisory)
- support.apple.com/HT211101 (Vendor Advisory)
- support.apple.com/HT211103 (Vendor Advisory)
- support.apple.com/HT211105 (Vendor Advisory)
- support.apple.com/HT211106 (Vendor Advisory)
- support.apple.com/HT211107 (Vendor Advisory)
- www.oracle.com/security-alerts/cpuoct2020.html (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-3909?
- CVE-2020-3909 is a critical-severity vulnerability in Apple Icloud, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2020-04-01.
- How severe is CVE-2020-3909?
- Critical severity. CVSS v3 base score is 9.8 out of 10.