critical9.8
CVE-2020-10188
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 overf…
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Netkit Telnet Project | Netkit Telnet | through 0.17 |
| Fedoraproject | Fedora | Versions 30, 31, 32 |
| Debian | Debian Linux | Versions 8.0, 9.0 |
| Arista | Eos | through 4.20.15 from 4.21.0 through 4.21.10m from 4.22 through 4.22.4m from 4.23 through 4.23.3m Version 4.24.0f |
| Oracle | Communications Performance Intelligence Center | Version 10.4.0.2 |
| Juniper | Junos | Versions 12.3, 12.3r12, 12.3x48, 12.3x50, 15.1, 15.1x49 |
Weakness classification
References
- NVD record
- CVE.org record
- 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://lists.debian.org/debian-lts-announce/2020/05/msg00012.html
- https://lists.debian.org/debian-lts-announce/2020/08/msg00038.html
- 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/HLU6FL24BSQQEB2SJC26NLJ2MANQDA7M/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K3VJ6V2Z3JRNJOBVHSOPMAC76PSSKG6A/
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-telnetd-EFJrEzPx
- https://www.arista.com/en/support/advisories-notices/security-advisories/10702-security-advisory-48
- https://www.oracle.com/security-alerts/cpuApr2021.html
- http://www.openwall.com/lists/oss-security/2026/01/20/8
- 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://lists.debian.org/debian-lts-announce/2020/05/msg00012.html
- https://lists.debian.org/debian-lts-announce/2020/08/msg00038.html
- 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/HLU6FL24BSQQEB2SJC26NLJ2MANQDA7M/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K3VJ6V2Z3JRNJOBVHSOPMAC76PSSKG6A/
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-telnetd-EFJrEzPx
- https://www.arista.com/en/support/advisories-notices/security-advisories/10702-security-advisory-48
- https://www.oracle.com/security-alerts/cpuApr2021.html