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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.1218 telnet security update 7 April 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: telnet Publisher: Red Hat Operating System: Red Hat UNIX variants (UNIX, Linux, OSX) Windows 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 Original Bulletin: https://access.redhat.com/errata/RHSA-2020:1318 https://access.redhat.com/errata/RHSA-2020:1334 https://access.redhat.com/errata/RHSA-2020:1335 Comment: This advisory references vulnerabilities in products which run on platforms other than Red Hat. It is recommended that administrators running telnet check for an updated version of the software for their operating system. This bulletin contains three (3) Red Hat security advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== 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 <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 iQIVAwUBXornYtzjgjWX9erEAQjF4hAApXudoDML/hwQVpZnEE1hRa4jr0uM9759 iES0dlng2d8xpA6yh8kr5vwWRG0L9bIoXWGgc0/I71K2Nkgwh1Gvt3VQ0fO3QJds esETM+EC/tSCpvcb6barSrHUGRS0n3IysORIPq5s8Gl+Y1SOR8Bvl9PSAf8ngt1p TTw29sg44jf+eSOVKan+hrLRt8zTJ/RbSkLM7wm5/y7X9tO17ggeALycUbnF0Nx4 nXpHVWyp2Lri/6oHlmvaa3fA6jm890e6dOLBKcu/PE9ppsJHw76f0sn/LcnXJLS2 Ib3AeSMCDXvlordRVobNp3XXYorqFiVh8T8+Mp3MR+Od1aUuWuSCQI1zno/JqAJ/ 2EEihxQaTNyPyiRGfaRUZ7zI5i9GZvn9nE56uj2eIEuIiDIdhiVt2xjnG7P8dDCY WKhLENP2aqY6r0RWcrgMhtd5PBVCPPHI0af9tlpXTLRMSsc+20IwZbvBjzRSOD57 xuB1fHXRGHGffhlcOO54pf8RFWdMpTm/BUf2fbINj1hlNSEljze/vHRJhyptbNIp RqlxLoXFZ9rg/LdODp8/MLMGG+VMCT6taVeh88LWtkF8WjAUBi6Wd+3xyM+gCqoW xTfgmDnmLKGiPNRB+Cz2YvCauj0W23kx8VlmigQ1g5GhPDdrOTNZos5m7j8zKWbV SM9A3unUm9E= =GC5k - -----END PGP SIGNATURE----- - -------------------------------------------------------------------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: telnet security update Advisory ID: RHSA-2020:1334-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2020:1334 Issue date: 2020-04-06 CVE Names: CVE-2020-10188 ===================================================================== 1. Summary: An update for telnet is now available for Red Hat Enterprise Linux 7. 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 Client (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - 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 Client (v. 7): Source: telnet-0.17-65.el7_8.src.rpm x86_64: telnet-0.17-65.el7_8.x86_64.rpm telnet-debuginfo-0.17-65.el7_8.x86_64.rpm telnet-server-0.17-65.el7_8.x86_64.rpm Red Hat Enterprise Linux ComputeNode (v. 7): Source: telnet-0.17-65.el7_8.src.rpm x86_64: telnet-0.17-65.el7_8.x86_64.rpm telnet-debuginfo-0.17-65.el7_8.x86_64.rpm telnet-server-0.17-65.el7_8.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: telnet-0.17-65.el7_8.src.rpm ppc64: telnet-0.17-65.el7_8.ppc64.rpm telnet-debuginfo-0.17-65.el7_8.ppc64.rpm telnet-server-0.17-65.el7_8.ppc64.rpm ppc64le: telnet-0.17-65.el7_8.ppc64le.rpm telnet-debuginfo-0.17-65.el7_8.ppc64le.rpm telnet-server-0.17-65.el7_8.ppc64le.rpm s390x: telnet-0.17-65.el7_8.s390x.rpm telnet-debuginfo-0.17-65.el7_8.s390x.rpm telnet-server-0.17-65.el7_8.s390x.rpm x86_64: telnet-0.17-65.el7_8.x86_64.rpm telnet-debuginfo-0.17-65.el7_8.x86_64.rpm telnet-server-0.17-65.el7_8.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: telnet-0.17-65.el7_8.src.rpm x86_64: telnet-0.17-65.el7_8.x86_64.rpm telnet-debuginfo-0.17-65.el7_8.x86_64.rpm telnet-server-0.17-65.el7_8.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 iQIVAwUBXotSQ9zjgjWX9erEAQjvsQ/6A8FaNnV29JDS5YKv/7wLRBo1pRaeUa4X PKiHNwQYxyTp9krFaIvmO0Y5CbOQ7j39a+qyUL1mwzsUaDXIgmYEBhDum6l4cuG/ OBdT4WBcVvJOQbaCey99X9lY+gVE9AgClUgfUU+4A6lIqW896n/g+AOLQA9MH8qP nnGBSerB7TnOzcJGrQ5ojg31ZVurhOar4hB7w7FY4jRsUUVNpseAI9t1CUnwfVxi tL8IwXxiYov+Ry7Ox8RaOOvn+R2TcG88fkKT5qzsokf2uuIOYPoz38xf8MTwQK2K WzwI4PPjdKXxW6yuP71zrAZ06BArfEzJYcGqCZ5d885tkQF5SdzFzfD/p35JAE93 3nd1dk0Bb52bjdHPARj2/2kZc3kiQlCy2kSomwI/C88NH5g8+axLH2SrjH3ZqO8Q RCTtlj/6Kd4SHCndZNNCUU26r3NqyTg7heMeA+DgsvLaRXk+tc532GC+AYfkUPE7 osH71bTHBP3RvLDhXG6WsNRMuFzwLigGtKqdNmaQMdDNR1HMVYimNrNGpqkxieZH aAglcpfEvedoqKMKRwuGCFl8jn2zCKHHwu6SS0f2srY5LvE5YkqcSopUGyPDy1kg Oi2+9hBnBsZQ9QsInbbjUIFZ2Dez87AyxGPoKcKzG3rXyHgyRwB5nI4yrOw8qHF3 Or5Ozk9J5nA= =8Cf2 - -----END PGP SIGNATURE----- - -------------------------------------------------------------------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: telnet security update Advisory ID: RHSA-2020:1335-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2020:1335 Issue date: 2020-04-06 CVE Names: CVE-2020-10188 ===================================================================== 1. Summary: 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. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, 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 Desktop (v. 6): Source: telnet-0.17-49.el6_10.src.rpm i386: telnet-0.17-49.el6_10.i686.rpm telnet-debuginfo-0.17-49.el6_10.i686.rpm telnet-server-0.17-49.el6_10.i686.rpm x86_64: telnet-0.17-49.el6_10.x86_64.rpm telnet-debuginfo-0.17-49.el6_10.x86_64.rpm telnet-server-0.17-49.el6_10.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: telnet-0.17-49.el6_10.src.rpm x86_64: telnet-0.17-49.el6_10.x86_64.rpm telnet-debuginfo-0.17-49.el6_10.x86_64.rpm telnet-server-0.17-49.el6_10.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: telnet-0.17-49.el6_10.src.rpm i386: telnet-0.17-49.el6_10.i686.rpm telnet-debuginfo-0.17-49.el6_10.i686.rpm telnet-server-0.17-49.el6_10.i686.rpm ppc64: telnet-0.17-49.el6_10.ppc64.rpm telnet-debuginfo-0.17-49.el6_10.ppc64.rpm telnet-server-0.17-49.el6_10.ppc64.rpm s390x: telnet-0.17-49.el6_10.s390x.rpm telnet-debuginfo-0.17-49.el6_10.s390x.rpm telnet-server-0.17-49.el6_10.s390x.rpm x86_64: telnet-0.17-49.el6_10.x86_64.rpm telnet-debuginfo-0.17-49.el6_10.x86_64.rpm telnet-server-0.17-49.el6_10.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: telnet-0.17-49.el6_10.src.rpm i386: telnet-0.17-49.el6_10.i686.rpm telnet-debuginfo-0.17-49.el6_10.i686.rpm telnet-server-0.17-49.el6_10.i686.rpm x86_64: telnet-0.17-49.el6_10.x86_64.rpm telnet-debuginfo-0.17-49.el6_10.x86_64.rpm telnet-server-0.17-49.el6_10.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 iQIVAwUBXotK/tzjgjWX9erEAQikGxAAlj5kW6eEYWEECatmis5XIlvL2jDkS6I4 f728+lt3GiS84kFfvEfwqoT/svn7a0AGQPmoaFGNQcEWEIky8mRPv07d6jQNvZH8 IKDu2rdU9hAKgWyw4pdpKHLRGEN48NKvWTE8vYlyrJg4SFeWDj3iPlybSZ4DFbpT y9bAhLrG3RTW0i1cBTyGYFDTtJX3aiX/76vNQzgB104jEEbEoj28H5aW12YsTnCQ 3ylXcEmP2BeWAkdlhLCM+NpkHnlCHTneIexIY7vGo0ETF11OLAGNV0wXhEFI4qOq BcJmfQSn7HrRyCSnodxzrIzD7deM24b40ol3zQ3la0c/tPy05SFR2vnpCzPrVXtM 5NtxFX2mksiA8GKT9fsQi+retGtJ7orFQ9DEk+h3TRsvA1Ggo2Tz3w9Xnw1ayw6Q 53Ho0x4jzNZjPxRpjFIwQOzXC2yt4jmBUAeKrYkxXRyCf6HlFpbUSq9vZY/bdw14 cgMicReIhEmFwV7di+cqw1FO7iateaUxWGnW2dtUPmctCweSbB/UIdMHLt3GbyLD NBXx68NVLYOmkCsSHyvHxZkD4nNM8KISP83lm1p7vZngtEZHphqByqvnWp+12Yh9 UwKmDgwKdsov7XLECMroofJ7jnnBmwdEA58jSgrXQBoX0dN6wBbv1ZM1n2RkSyMl Eh88zJ7DmDA= =nLxu - -----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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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXovQUGaOgq3Tt24GAQhn8Q/9GD6TbAKQUSZv6EcWo43m1QL//1LnpVe/ BMVceACHZB0V+lufJVbX+ptUiL06Wgd5/BlFpbrvjVZ3MXaACmlwejGde4FCzkIJ YgTAJG8CqOKWOx8einBJu15e0yeA2wyww77fkCqPGLp08MYjTq8lpGttCD6m4Mrx /OtOh5Q9UKK60tEbI/+lAD1nk14Bi9oZOphmUp4/CfpkwxqLaRFYHCJ17qZI7EYk WmnEOxJ1xG7QVSB+xO55tUh2L717OhqDs8lZ4h8uerYAqZQs1CZ+4VSSRiULuCbZ Uf2UTozjIRqRlMeQ/Uwde4UQM7Vuza/E1GyEzv/ZUHi4/vecCpqnkwq7Sc3dco/A mqHoJCrm/EuUrROXbqxixlanalUeKo/OGoanho36dm/0fMdBrpwtOlTnSM5tDlyF 9IqgM81G6N5/H1f/rjposlb/nnH2wdBPWfUsnK9cF1gzmKo46ifFUAWoda0kzKZ4 nufsejj228YQR4Dg0kZ/aw7CTFf+Q452gi22SgJ6BVcQz3+pWxySedK161Xi16zn AzNf/ftqYFZpRWrwcbHWbuZqRtoTN3TMLob4TgJRP3lF+8uNeWRxHAgwyBo5Dry1 qQYN2L+18jboj6wJGygujr28PuE19sK74G9TtjhO912ZTNU3pBX0IR23SMR+yINx 5ew7CpKJFfo= =A8l/ -----END PGP SIGNATURE-----