VulnerabilityModified
CVE-2020-3909
A buffer overflow was addressed with improved bounds checking.
CRITICAL 9.8EPSS 3.04%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.04%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.04% probability · 87th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- apple/icloud · apple/itunes · apple/ipados · apple/iphone os · apple/mac os x · apple/tvos · apple/watchos · oracle/sun zfs storage appliance kit software
- Source
- product-security@apple.com
References
- https://support.apple.com/HT211100Vendor Advisory
- https://support.apple.com/HT211101Vendor Advisory
- https://support.apple.com/HT211102Vendor Advisory
- https://support.apple.com/HT211103Vendor Advisory
- https://support.apple.com/HT211105Vendor Advisory
- https://support.apple.com/HT211106Vendor Advisory
- https://support.apple.com/HT211107Vendor Advisory
- https://www.oracle.com/security-alerts/cpuoct2020.htmlThird Party Advisory
- https://support.apple.com/HT211100Vendor Advisory
- https://support.apple.com/HT211101Vendor Advisory
- https://support.apple.com/HT211102Vendor Advisory
- https://support.apple.com/HT211103Vendor Advisory
- https://support.apple.com/HT211105Vendor Advisory
- https://support.apple.com/HT211106Vendor Advisory
- https://support.apple.com/HT211107Vendor Advisory
- https://www.oracle.com/security-alerts/cpuoct2020.htmlThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.