Use After Free in Apple Icloud
CVE-2020-7463
In FreeBSD 12.1-STABLE before r364644, 11.4-STABLE before r364651, 12.1-RELEASE before p9, 11.4-RELEASE before p3, and 11.3-RELEASE before p13, improper handling in the kernel causes a use-after-free bug by sending large user messages from multiple threads on the same SCTP socket. The use-after-free situation may result in unintended kernel behaviour including a kernel panic.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (31.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 31.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Apple Icloud
- Apple Ipados
- Apple Iphone OS
- Apple Itunes
- Apple macOS
- Apple Safari
- Apple tvOS
- Apple watchOS
- FreeBSD — versions 11.3, 11.4, 12.1
- FreeBSD — versions FreeBSD 12.1-RELEASE before p9, 11.4-RELEASE before p3, 11.3-RELEASE before p13
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security.FreeBSD.org/advisories/FreeBSD-SA-20:25.sctp.asc (Vendor Advisory)
- support.apple.com/kb/HT212317 (Third Party Advisory)
- support.apple.com/kb/HT212319 (Third Party Advisory)
- support.apple.com/kb/HT212325 (Third Party Advisory)
- support.apple.com/kb/HT212323 (Third Party Advisory)
- support.apple.com/kb/HT212324 (Third Party Advisory)
- support.apple.com/kb/HT212321 (Third Party Advisory)
- support.apple.com/kb/HT212318 (Third Party Advisory)
- seclists.org/fulldisclosure/2021/Apr/49 (mailing-list, Mailing List, Third Party Advisory)
- seclists.org/fulldisclosure/2021/Apr/50 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-7463?
- CVE-2020-7463 is a medium-severity vulnerability in Apple Icloud, classified under Use After Free. CVSS score: 5.5/10. Published 2021-03-26.
- How severe is CVE-2020-7463?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2020-7463 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.