Important: telnet

Issue Overview:

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. (CVE-2020-10188)

Affected Packages:

telnet

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update telnet to update your system.

New Packages:

aarch64:  
    telnet-0.17-65.amzn2.aarch64  
    telnet-server-0.17-65.amzn2.aarch64  
    telnet-debuginfo-0.17-65.amzn2.aarch64  
  
i686:  
    telnet-0.17-65.amzn2.i686  
    telnet-server-0.17-65.amzn2.i686  
    telnet-debuginfo-0.17-65.amzn2.i686  
  
src:  
    telnet-0.17-65.amzn2.src  
  
x86_64:  
    telnet-0.17-65.amzn2.x86_64  
    telnet-server-0.17-65.amzn2.x86_64  
    telnet-debuginfo-0.17-65.amzn2.x86_64  

Additional References

Red Hat: CVE-2020-10188

Mitre: CVE-2020-10188