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Status published
Critical
CVE-2020-10188
utility.c in telnetd in netkit telnet through 0.17 allows remote...
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
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
Affected Vendor
netkit telnet project
View all reports →Affected Software
netkit telnet, fedora, debian linux, eos, communications performance intelligence center, junos
Vulnerable Versions:
0, 30, 31, 32, 8.0, 9.0, 4.21.0, 4.22, 4.23, 4.24.0f, 10.4.0.2, 12.3, 12.3r12, 12.3x48, 12.3x50, 15.1, 15.1x49, 15.1x49-d30, 15.1x49-d60, 15.1x49-d140, 15.1x49-d150, 15.1x49-d160, 16.1, 17.2, 17.2x75, 17.3, 17.4, 18.1, 18.2, 18.2x75, 18.2x75-d10, 18.2x75-d30, 18.3, 18.4, 19.1, 19.2, 19.3, 19.4, 20.1
Timeline
Official Publish:
March 6th, 2020
Last Modified:
January 21st, 2026
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.