Buffer Overflow Affecting telnet package, versions <1:0.17-49.9.amzn1


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
74.34% (100th percentile)

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  • Snyk IDSNYK-AMZN201803-TELNET-1722178
  • published27 Sept 2021
  • disclosed6 Mar 2020

Introduced: 6 Mar 2020

CVE-2020-10188  (opens in a new tab)
CWE-120  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 telnet to version 1:0.17-49.9.amzn1 or higher.
This issue was patched in ALAS-2020-1387.

NVD Description

Note: Versions mentioned in the description apply only to the upstream telnet package and not the telnet package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

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 Base Scores

version 3.1