RHSA-2022:0158: Red Hat Security Advisory: telnet security update

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Issued:

2022-01-18

Updated:

2022-01-18

RHSA-2022:0158 - Security Advisory

• Overview
• Updated Packages

Synopsis

Important: telnet security update

Type/Severity

Security Advisory: Important

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An update for telnet is now available for Red Hat Enterprise Linux 7.7 Advanced Update Support, Red Hat Enterprise Linux 7.7 Telco Extended Update Support, and Red Hat Enterprise Linux 7.7 Update Services for SAP Solutions.

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.

Affected Products

• Red Hat Enterprise Linux Server - AUS 7.7 x86_64
• Red Hat Enterprise Linux Server - TUS 7.7 x86_64
• Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions 7.7 ppc64le
• Red Hat Enterprise Linux Server - Update Services for SAP Solutions 7.7 x86_64

Fixes

• BZ - 1811673 - CVE-2020-10188 telnet-server: no bounds checks in nextitem() function allows to remotely execute arbitrary code

Red Hat Enterprise Linux Server - AUS 7.7

SRPM

telnet-0.17-65.el7_7.src.rpm

SHA-256: 87c8994ad042b6b09ee29602da20e9c10ddb7b4fd5dca17ab6b4489b9a57fd2b

x86_64

telnet-0.17-65.el7_7.x86_64.rpm

SHA-256: cbbc029c437f19d9e67245f5500ac5e289e553fdbbca66ad68dc349231b9c7b7

telnet-debuginfo-0.17-65.el7_7.x86_64.rpm

SHA-256: 1fa9e98303eecd967085eaff685821bdf868769945f6e1f7f341a1405a65e079

telnet-server-0.17-65.el7_7.x86_64.rpm

SHA-256: 0b22c8a494486a46c921838543c45944a770b702dfe70bf663b330c8c037ba8f

Red Hat Enterprise Linux Server - TUS 7.7

SRPM

telnet-0.17-65.el7_7.src.rpm

SHA-256: 87c8994ad042b6b09ee29602da20e9c10ddb7b4fd5dca17ab6b4489b9a57fd2b

x86_64

telnet-0.17-65.el7_7.x86_64.rpm

SHA-256: cbbc029c437f19d9e67245f5500ac5e289e553fdbbca66ad68dc349231b9c7b7

telnet-debuginfo-0.17-65.el7_7.x86_64.rpm

SHA-256: 1fa9e98303eecd967085eaff685821bdf868769945f6e1f7f341a1405a65e079

telnet-server-0.17-65.el7_7.x86_64.rpm

SHA-256: 0b22c8a494486a46c921838543c45944a770b702dfe70bf663b330c8c037ba8f

Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions 7.7

SRPM

telnet-0.17-65.el7_7.src.rpm

SHA-256: 87c8994ad042b6b09ee29602da20e9c10ddb7b4fd5dca17ab6b4489b9a57fd2b

ppc64le

telnet-0.17-65.el7_7.ppc64le.rpm

SHA-256: c88a7163ca775255cf4a6a40e09b848959f26d213608b6b5e77f3de9075a6af0

telnet-debuginfo-0.17-65.el7_7.ppc64le.rpm

SHA-256: be1f868a44e138eb09b940bf7d872904215aad3da497d547623c04f95b2bc2f1

telnet-server-0.17-65.el7_7.ppc64le.rpm

SHA-256: c38ccc1ca52cb7383e22ddd31bd54b1c7d3fc47bad7bddcdefd42f97ee2cae81

Red Hat Enterprise Linux Server - Update Services for SAP Solutions 7.7

SRPM

telnet-0.17-65.el7_7.src.rpm

SHA-256: 87c8994ad042b6b09ee29602da20e9c10ddb7b4fd5dca17ab6b4489b9a57fd2b

x86_64

telnet-0.17-65.el7_7.x86_64.rpm

SHA-256: cbbc029c437f19d9e67245f5500ac5e289e553fdbbca66ad68dc349231b9c7b7

telnet-debuginfo-0.17-65.el7_7.x86_64.rpm

SHA-256: 1fa9e98303eecd967085eaff685821bdf868769945f6e1f7f341a1405a65e079

telnet-server-0.17-65.el7_7.x86_64.rpm

SHA-256: 0b22c8a494486a46c921838543c45944a770b702dfe70bf663b330c8c037ba8f

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.