High severity · published Nov 2, 2020
CVE-2020-9861
A stack overflow issue existed in Swift for Linux
7.5
CVSS
1.5%
EPSS
No
On KEV
Description
A stack overflow issue existed in Swift for Linux. The issue was addressed with improved input validation for dealing with deeply nested malicious JSON input.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.5% · higher than 73% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SW
Swift · Apple
through 5.1.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-9861
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-9861
Vendor Advisory
https://forums.swift.org/t/swift-5-1-5-for-linux-jsonserialization-limit-recursion-when-parsing/34514
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