RedHat: RHSA-2020-1318:01 Important: telnet security update

    Date 06 Apr 2020
    278
    Posted By LinuxSecurity Advisories
    An update for telnet is now available for Red Hat Enterprise Linux 8. 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
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    =====================================================================
                       Red Hat Security Advisory
    
    Synopsis:          Important: telnet security update
    Advisory ID:       RHSA-2020:1318-01
    Product:           Red Hat Enterprise Linux
    Advisory URL:      https://access.redhat.com/errata/RHSA-2020:1318
    Issue date:        2020-04-06
    CVE Names:         CVE-2020-10188 
    =====================================================================
    
    1. Summary:
    
    An update for telnet is now available for Red Hat Enterprise Linux 8.
    
    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.
    
    2. Relevant releases/architectures:
    
    Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64
    
    3. 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.
    
    4. 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
    
    5. Bugs fixed (https://bugzilla.redhat.com/):
    
    1811673 - CVE-2020-10188 telnet-server: no bounds checks in nextitem() function allows to remotely execute arbitrary code
    
    6. Package List:
    
    Red Hat Enterprise Linux AppStream (v. 8):
    
    Source:
    telnet-0.17-73.el8_1.1.src.rpm
    
    aarch64:
    telnet-0.17-73.el8_1.1.aarch64.rpm
    telnet-debuginfo-0.17-73.el8_1.1.aarch64.rpm
    telnet-debugsource-0.17-73.el8_1.1.aarch64.rpm
    telnet-server-0.17-73.el8_1.1.aarch64.rpm
    telnet-server-debuginfo-0.17-73.el8_1.1.aarch64.rpm
    
    ppc64le:
    telnet-0.17-73.el8_1.1.ppc64le.rpm
    telnet-debuginfo-0.17-73.el8_1.1.ppc64le.rpm
    telnet-debugsource-0.17-73.el8_1.1.ppc64le.rpm
    telnet-server-0.17-73.el8_1.1.ppc64le.rpm
    telnet-server-debuginfo-0.17-73.el8_1.1.ppc64le.rpm
    
    s390x:
    telnet-0.17-73.el8_1.1.s390x.rpm
    telnet-debuginfo-0.17-73.el8_1.1.s390x.rpm
    telnet-debugsource-0.17-73.el8_1.1.s390x.rpm
    telnet-server-0.17-73.el8_1.1.s390x.rpm
    telnet-server-debuginfo-0.17-73.el8_1.1.s390x.rpm
    
    x86_64:
    telnet-0.17-73.el8_1.1.x86_64.rpm
    telnet-debuginfo-0.17-73.el8_1.1.x86_64.rpm
    telnet-debugsource-0.17-73.el8_1.1.x86_64.rpm
    telnet-server-0.17-73.el8_1.1.x86_64.rpm
    telnet-server-debuginfo-0.17-73.el8_1.1.x86_64.rpm
    
    These packages are GPG signed by Red Hat for security.  Our key and
    details on how to verify the signature are available from
    https://access.redhat.com/security/team/key/
    
    7. References:
    
    https://access.redhat.com/security/cve/CVE-2020-10188
    https://access.redhat.com/security/updates/classification/#important
    
    8. Contact:
    
    The Red Hat security contact is . More contact
    details at https://access.redhat.com/security/team/contact/
    
    Copyright 2020 Red Hat, Inc.
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