Issued:
2020-04-06
Updated:
2020-04-06

RHSA-2020:1335 - Important: telnet security update

Synopsis

Important: telnet security update

Type/Severity

Security Advisory Important

Topic

An update for telnet is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

Telnet is a popular protocol for logging in to remote systems over the Internet. The telnet-server packages include a telnet service that supports remote logins into the host machine. The telnet service is disabled by default.

Security Fix(es):

  • telnet-server: no bounds checks in nextitem() function allows to remotely execute arbitrary code (CVE-2020-10188)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for Scientific Computing6x86_64
Red Hat Enterprise Linux for Power, big endian6ppc64
Red Hat Enterprise Linux for IBM z Systems6s390x
Red Hat Enterprise Linux Workstation6x86_64
Red Hat Enterprise Linux Workstation6i386
Red Hat Enterprise Linux Server6x86_64
Red Hat Enterprise Linux Server6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems)6s390x
Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems)6s390x
Red Hat Enterprise Linux Desktop6x86_64
Red Hat Enterprise Linux Desktop6i386

Updated Packages

  • telnet-server-0.17-49.el6_10.ppc64.rpm
  • telnet-debuginfo-0.17-49.el6_10.ppc64.rpm
  • telnet-0.17-49.el6_10.x86_64.rpm
  • telnet-server-0.17-49.el6_10.s390x.rpm
  • telnet-0.17-49.el6_10.i686.rpm
  • telnet-0.17-49.el6_10.src.rpm
  • telnet-debuginfo-0.17-49.el6_10.s390x.rpm
  • telnet-debuginfo-0.17-49.el6_10.i686.rpm
  • telnet-0.17-49.el6_10.ppc64.rpm
  • telnet-debuginfo-0.17-49.el6_10.x86_64.rpm
  • telnet-server-0.17-49.el6_10.i686.rpm
  • telnet-0.17-49.el6_10.s390x.rpm
  • telnet-server-0.17-49.el6_10.x86_64.rpm

Fixes

CVEs

References

Additional information