HSEC-2025-0006 json
Private key leak via inherited file descriptor
published 2025-11-17 11 mo ago modified 2025-11-17 11 mo ago
- cvss
- 5.3
- version 3.1, OSV
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- —
- no score, EPSS covers CVEs only
- public exploits
- 0
- none known
Summary
# Private key leak via inherited file descriptor
The X.509 key reading function `readKeyFile` opened a file descriptor to the private key without setting the *close-on-exec* flag. If a child process is `exec`ed at the same time, it would inherit that file descriptor and could read the private key material.
Impact is limited to child processes that run untrusted code, but that do not close inherited file descriptors. (For example, the `su(1)` command.)
This leak was fixed by setting the *close-on-exec* flag on unix-based systems.
Patch / fix
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| OSV | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| hackage | x509-store | >=0.1 |
no fix listed |
| hackage | crypton-x509-store | >=1.6.9, <1.6.12 |
1.6.12 |
References
Sources
- OSV HSEC-2025-0006
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