High severity · published Apr 2, 2021
CVE-2020-9967
Multiple memory corruption issues were addressed with improved input validation
7.8
CVSS
2.3%
EPSS
No
On KEV
Description
Multiple memory corruption issues were addressed with improved input validation. This issue is fixed in macOS Big Sur 11.0.1, tvOS 14.0, macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, watchOS 7.0, iOS 14.0 and iPadOS 14.0. A remote attacker may be able to cause unexpected system termination or corrupt kernel memory.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.3% · higher than 83% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IO
iOS · Apple
before 14.0 · source: NVD
MA
macOS · Apple
11.0 before 11.1.0 · source: NVD
MO
Mac OS X · Apple
10.14 before 10.14.6; 10.15 before 10.15.7; 10.14.6; 10.14.6; 10.14.6; 10.14.6; +9 more · source: NVD
TV
Tvos · Apple
before 14.0 · source: NVD
WA
Watchos · Apple
before 7.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-9967
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-9967
Third Party Advisory
http://packetstormsecurity.com/files/163501/XNU-Network-Stack-Kernel-Heap-Overflow.html
Vendor Advisory
https://support.apple.com/en-us/HT211843
Vendor Advisory
https://support.apple.com/en-us/HT211844
Vendor Advisory
https://support.apple.com/en-us/HT211850
Vendor Advisory
https://support.apple.com/en-us/HT211931
Vendor Advisory
https://support.apple.com/en-us/HT212011
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