Critical severity · published Mar 6, 2020
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 overflow involving the…
9.8
CVSS
74.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)74.3% · higher than 99% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JO
Junos OS · Juniper
12.3; 12.3; 12.3; 12.3; 12.3; 12.3; +34 more · source: NVD
CP
Communications Performance Intelligence Center · Oracle
10.4.0.2 · source: NVD
DL
Debian Linux · Debian
8.0; 9.0 · source: NVD
EO
Eos · Arista
through 4.20.15; 4.21.0 through 4.21.10m; 4.22 through 4.22.4m; 4.23 through 4.23.3m; 4.24.0f · source: NVD
FE
Fedora · Fedoraproject
30; 31; 32 · source: NVD
NT
Netkit Telnet · Netkit Telnet Project
through 0.17 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-10188
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-10188
Third Party Advisory
https://appgateresearch.blogspot.com/2020/02/bravestarr-fedora-31-netkit-telnetd_28.html
Patch
https://github.com/krb5/krb5-appl/blob/d00cd671dfe945791b33d4f1f6a5c57ae1667ef8/telnet/telnetd/utility.c#L205-L216
Mailing List
https://lists.debian.org/debian-lts-announce/2020/05/msg00012.html
Mailing List
https://lists.debian.org/debian-lts-announce/2020/08/msg00038.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7FMTRRQTYKWZD2GMXX3GLZV46OLPCLVK/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HLU6FL24BSQQEB2SJC26NLJ2MANQDA7M/
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