CVE-2020-10188
At a glance
- Source
- NVD
- EPSS
- EPSS 74.34 % · percentile 99 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- mitre
- NVD status
- Modified
Description
utility.c in telnetd in netkit telnet through 0.17 allows remote attackers to execute arbitrary code via short writes or urgent data, because of a buffer overflow involving the netclear and nextitem functions.
Weaknesses (CWE)
- CWE-120 — Buffer Copy without Checking Size of Input
References
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HLU6FL24BSQQEB2SJC26NLJ2MANQDA7M/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7FMTRRQTYKWZD2GMXX3GLZV46OLPCLVK/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K3VJ6V2Z3JRNJOBVHSOPMAC76PSSKG6A/
- https://lists.debian.org/debian-lts-announce/2020/05/msg00012.html
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-telnetd-EFJrEzPx
- https://lists.debian.org/debian-lts-announce/2020/08/msg00038.html
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://appgateresearch.blogspot.com/2020/02/bravestarr-fedora-31-netkit-telnetd_28.html
- https://github.com/krb5/krb5-appl/blob/d00cd671dfe945791b33d4f1f6a5c57ae1667ef8/telnet/telnetd/utility.c#L205-L216
- https://www.arista.com/en/support/advisories-notices/security-advisories/10702-security-advisory-48
- http://www.openwall.com/lists/oss-security/2026/01/20/8
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 10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2020-2649
- GCVE · GCVE-0-2020-10188
CERT-FR advisories
- CERTFR-2021-AVI-692 — Multiples vulnérabilités dans les produits Palo Alto Networks · cert.ssi.gouv.fr
- CERTFR-2020-AVI-645 — Multiples vulnérabilités dans les produits Juniper · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:netkit_telnet_project:netkit_telnet:*:*:*:*:*:*:*:*≤ 0.17cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*≤ 4.20.15cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*≥ 4.21.0 ≤ 4.21.10mcpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*≥ 4.22 ≤ 4.22.4mcpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*≥ 4.23 ≤ 4.23.3mcpe:2.3:o:arista:eos:4.24.0f:*:*:*:*:*:*:*cpe:2.3:a:oracle:communications_performance_intelligence_center:10.4.0.2:*:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:-:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r10:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r10-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r10-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r11:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r12:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r12-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r12-s10:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r12-s11:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r12-s12:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r12-s13:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r12-s14:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r12-s15:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r12-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r12-s4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r12-s6:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r12-s8:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r13:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r5:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r6:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r7:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r8:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r9:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3r12:*:*:*:*:*:*:*- +321 more
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 |