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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.1239 telnet security update 8 April 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: telnet Publisher: Red Hat Operating System: Red Hat Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Access Confidential Data -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2020-10188 Reference: ESB-2020.1218 Original Bulletin: https://access.redhat.com/errata/RHSA-2020:1342 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: telnet security update Advisory ID: RHSA-2020:1342-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2020:1342 Issue date: 2020-04-07 CVE Names: CVE-2020-10188 ===================================================================== 1. Summary: An update for telnet is now available for Red Hat Enterprise Linux 8.0 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. 2. Relevant releases/architectures: Red Hat Enterprise Linux AppStream E4S (v. 8.0) - 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 E4S (v. 8.0): Source: telnet-0.17-73.el8_0.1.src.rpm aarch64: telnet-0.17-73.el8_0.1.aarch64.rpm telnet-debuginfo-0.17-73.el8_0.1.aarch64.rpm telnet-debugsource-0.17-73.el8_0.1.aarch64.rpm telnet-server-0.17-73.el8_0.1.aarch64.rpm telnet-server-debuginfo-0.17-73.el8_0.1.aarch64.rpm ppc64le: telnet-0.17-73.el8_0.1.ppc64le.rpm telnet-debuginfo-0.17-73.el8_0.1.ppc64le.rpm telnet-debugsource-0.17-73.el8_0.1.ppc64le.rpm telnet-server-0.17-73.el8_0.1.ppc64le.rpm telnet-server-debuginfo-0.17-73.el8_0.1.ppc64le.rpm s390x: telnet-0.17-73.el8_0.1.s390x.rpm telnet-debuginfo-0.17-73.el8_0.1.s390x.rpm telnet-debugsource-0.17-73.el8_0.1.s390x.rpm telnet-server-0.17-73.el8_0.1.s390x.rpm telnet-server-debuginfo-0.17-73.el8_0.1.s390x.rpm x86_64: telnet-0.17-73.el8_0.1.x86_64.rpm telnet-debuginfo-0.17-73.el8_0.1.x86_64.rpm telnet-debugsource-0.17-73.el8_0.1.x86_64.rpm telnet-server-0.17-73.el8_0.1.x86_64.rpm telnet-server-debuginfo-0.17-73.el8_0.1.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 <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2020 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBXowuJ9zjgjWX9erEAQgGEQ//aKTH3m/ije0Wi55COu3ObNLQanUykWt2 4IDcFBh1syQXsX2e8VysZoxOJVkE+P33Mb1tJvo2/0EKE+8AesNxMLTX4/bLtPBR pkAio3/P43xVvQK2GS1GevvuQGb2NhEv3HJMYN1AJ5frqH0ZEAgyJT9HrL/JnGle sx07YOpDg2aXeE0bZffl2l+RZKh3XfRbSa/OQXiITmdmnLaN1UpIYhTV+QiaHKe8 vWLkIUSXx8L6uZNV6twWS7cwyiczSpI0gMfITxYkBEyrNfttMW4AC5RgiPdXlzRk KofYPUqzZa70Ub7UCyVzygb2DQpY7f6eFmUfO0trWgmNAJzqTjY2soAGjU+xyXDq +HSjDsp17qfWmH4slk4yUpwUO/H98jggRXBWVwNkXADM5i62tFbwddehEWIwCWrD rAthY0X+4/fp/2AxREphnEs4JcYf+T6Y0VqdqP4YqTIJec96giEibGzRyFEtGIeT lQLxGHroFq7/i5cHWLhe44zeMuZvitIYpEpA15iD/81O6r2MIoqqsoYT92NO3n/b hktsHXZkZVTuBcGp3M5J9gk/3NUoO+d4yKF2kra8DFEJjlmpaY3PTLgetO4iH4cq Tb5ynr1vCtuES5i5V7y1SP78BRIpuUwUzxLdXSpOQ7mFHFf46Elvsif1birhkbdw jeIJKxVhLeo= =CdIU - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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