When curl < 7.84.0 saves cookies, alt-svc and hsts data to local files, it makes the operation atomic by finalizing the operation with a rename from a temporary name to the final target file name.In that rename operation, it might accidentally *widen* the permissions for the target file, leaving the updated file accessible to more users than intended.
https://hackerone.com/reports/1573634
https://www.debian.org/security/2022/dsa-5197
https://security.netapp.com/advisory/ntap-20220915-0003/
https://support.apple.com/kb/HT213488
http://seclists.org/fulldisclosure/2022/Oct/41
Source: MITRE
Published: 2022-07-07
Updated: 2023-01-05
Type: CWE-276
Base Score: 7.5
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 10
Severity: HIGH
Base Score: 9.8
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 3.9
Severity: CRITICAL