CVE-2021-26937
At a glance
- Source
- NVD
- EPSS
- EPSS 9.15 % · percentile 95 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- mitre
- NVD status
- Modified
Description
encoding.c in GNU Screen through 4.8.0 allows remote attackers to cause a denial of service (invalid write access and application crash) or possibly have unspecified other impact via a crafted UTF-8 character sequence.
Weaknesses (CWE)
- CWE-88 — Improper Neutralization of Argument Delimiters in a Command
References
- https://lists.gnu.org/archive/html/screen-devel/2021-02/msg00000.html
- https://www.openwall.com/lists/oss-security/2021/02/09/3
- https://ftp.gnu.org/gnu/screen/
- http://www.openwall.com/lists/oss-security/2021/02/09/8
- https://lists.debian.org/debian-lts-announce/2021/02/msg00031.html
- https://www.debian.org/security/2021/dsa-4861
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JJWLXP45POUUYBJRRWPVAWNZDJTLYWVM/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GNWBOIDEPOEQS5RMQVMFKHKXJCGNYWBL/
- https://security.gentoo.org/glsa/202105-11
- https://security.netapp.com/advisory/ntap-20250509-0004/
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | HIGH 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2021-13719
- GCVE · GCVE-0-2021-26937
CERT-FR advisories
- CERTFR-2021-AVI-638 — Multiples vulnérabilités dans Juniper Junos Space · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:gnu:screen:*:*:*:*:*:*:*:*≤ 4.8.0cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| affected n/a |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |