CVE-2020-10188

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 11.18% Top 10%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory cisco.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HLU6FL24BSQQEB2SJC26NLJ2MANQDA7M/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7FMTRRQTYKWZD2GMXX3GLZV46OLPCLVK/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K3VJ6V2Z3JRNJOBVHSOPMAC76PSSKG6A/ vendor advisory
https://lists.debian.org/debian-lts-announce/2020/05/msg00012.html third party advisory mailing list
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-telnetd-EFJrEzPx third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2020/08/msg00038.html third party advisory mailing list
https://www.oracle.com/security-alerts/cpuApr2021.html third party advisory patch
https://appgateresearch.blogspot.com/2020/02/bravestarr-fedora-31-netkit-telnetd_28.html third party advisory
https://github.com/krb5/krb5-appl/blob/d00cd671dfe945791b33d4f1f6a5c57ae1667ef8/telnet/telnetd/utility.c#L205-L216 third party advisory patch
https://www.arista.com/en/support/advisories-notices/security-advisories/10702-security-advisory-48 third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-10188?
CVE-2020-10188 has been scored as a critical severity vulnerability.
How to fix CVE-2020-10188?
To fix CVE-2020-10188, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-10188 being actively exploited in the wild?
It is possible that CVE-2020-10188 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~11% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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