CVE-2021-38172 json
perM 0.4.0 has a Buffer Overflow related to strncpy.
published 2022-02-05 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-24642
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.8%
- EPSS 1.8% chance of exploitation in 30 days, percentile 78%
- public exploits
- 0
- none known
Summary
perM 0.4.0 has a Buffer Overflow related to strncpy. (Debian initially fixed this in 0.4.0-7.)
Patch / fix
- packages.qa.debian.org/p/perm.html advisory
- tracker.debian.org/pkg/perm advisory
- salsa.debian.org/med-team/perm/-/commits/master/ advisory
Exploit prediction
1.83% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- bugs.debian.org https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=993019 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-120 Buffer Copy without Checking Size of Input
References
-
packages.qa.debian.org
/p/perm.html
issue-tracking, patch, vendor-advisory
-
tracker.debian.org
/pkg/perm
issue-tracking, patch, vendor-advisory
-
salsa.debian.org
/med-team/perm/-/commits/master/
patch, vendor-advisory
-
bugs.debian.org
/cgi-bin/bugreport.cgi?bug=993019
exploit, vendor-advisory
-
lists.debian.org
/debian-med/2021/08/msg00016.html
mailing-list, vendor-advisory
Sources
- CVE List CVE-2021-38172
- NVD CVE-2021-38172
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