Vulnerability Details : CVE-2020-9839
Public exploit exists!
A race condition was addressed with improved state handling. This issue is fixed in iOS 13.5 and iPadOS 13.5, macOS Catalina 10.15.5, tvOS 13.4.5, watchOS 6.2.5. An application may be able to gain elevated privileges.
Products affected by CVE-2020-9839
- cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
- cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
- cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
- cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-9839
41.34%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 97 %
Percentile, the proportion of vulnerabilities that are scored at or less
Metasploit modules for CVE-2020-9839
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macOS cfprefsd Arbitrary File Write Local Privilege Escalation
Disclosure Date: 2020-03-18First seen: 2020-09-04exploit/osx/local/cfprefsd_race_conditionThis module exploits an arbitrary file write in cfprefsd on macOS <= 10.15.4 in order to run a payload as root. The CFPreferencesSetAppValue function, which is reachable from most unsandboxed processes, can be exploited with a race condition in order to overw
CVSS scores for CVE-2020-9839
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.1
|
MEDIUM | AV:N/AC:H/Au:N/C:P/I:P/A:P |
4.9
|
6.4
|
NIST | |
|
7.0
|
HIGH | CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
1.0
|
5.9
|
NIST |
CWE ids for CVE-2020-9839
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The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-9839
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https://support.apple.com/HT211171
About the security content of tvOS 13.4.5 - Apple SupportVendor Advisory
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https://support.apple.com/HT211168
About the security content of iOS 13.5 and iPadOS 13.5 - Apple SupportVendor Advisory
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https://support.apple.com/HT211170
About the security content of macOS Catalina 10.15.5, Security Update 2020-003 Mojave, Security Update 2020-003 High Sierra - Apple SupportVendor Advisory
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https://support.apple.com/HT211175
About the security content of watchOS 6.2.5 - Apple SupportVendor Advisory
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