PT-2020-3020 · Netkit+7 · Netkit-Telnet+7
Published
2020-02-28
·
Updated
2026-01-21
·
CVE-2020-10188
CVSS v2.0
10
Critical
| Vector | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Name of the Vulnerable Software and Affected Versions
netkit-telnet versions 0.17 and earlier
Description
The issue is related to a buffer overflow in the netclear and nextitem functions in the telnetd daemon, which can be exploited by remote attackers to execute arbitrary code via short writes or urgent data. This is due to the lack of size checking for input data. The vulnerability can be exploited by adding short records or using the "urgent data" mechanism.
Recommendations
For netkit-telnet versions 0.17 and earlier, consider disabling the telnetd service until a patch is available. As a temporary workaround, restrict access to the telnetd daemon to minimize the risk of exploitation. Avoid using the
netclear() and nextitem() functions until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.RCE
Buffer Overflow
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Weakness Enumeration
Related Identifiers
Affected Products
Centos
Cisco Ios Xe
Junos
Linuxmint
Red Hat
Suse
Ubuntu
Netkit-Telnet