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Red Hat Enterprise 7: RHSA-2021:0742-01 Important Screen Crash Threat

An update for screen 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. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: screen security update Advisory ID: RHSA-2021:0742-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:0742 Issue date: 2021-03-08 CVE Names: CVE-2021-26937 ==================================================================== 1. Summary: An update for screen 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 Optional (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: The screen utility allows users to have multiple logins on a single terminal. Security Fix(es): * screen: crash when processing combining chars (CVE-2021-26937) 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/): 1927062 - CVE-2021-26937 screen: crash whenprocessing combining chars 6. Package List: Red Hat Enterprise Linux Client Optional (v. 7): Source: screen-4.1.0-0.27.20120314git3c2946.el7_9.src.rpm x86_64: screen-4.1.0-0.27.20120314git3c2946.el7_9.x86_64.rpm screen-debuginfo-4.1.0-0.27.20120314git3c2946.el7_9.x86_64.rpm Red Hat Enterprise Linux ComputeNode (v. 7): Source: screen-4.1.0-0.27.20120314git3c2946.el7_9.src.rpm x86_64: screen-4.1.0-0.27.20120314git3c2946.el7_9.x86_64.rpm screen-debuginfo-4.1.0-0.27.20120314git3c2946.el7_9.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: screen-4.1.0-0.27.20120314git3c2946.el7_9.src.rpm ppc64: screen-4.1.0-0.27.20120314git3c2946.el7_9.ppc64.rpm screen-debuginfo-4.1.0-0.27.20120314git3c2946.el7_9.ppc64.rpm ppc64le: screen-4.1.0-0.27.20120314git3c2946.el7_9.ppc64le.rpm screen-debuginfo-4.1.0-0.27.20120314git3c2946.el7_9.ppc64le.rpm s390x: screen-4.1.0-0.27.20120314git3c2946.el7_9.s390x.rpm screen-debuginfo-4.1.0-0.27.20120314git3c2946.el7_9.s390x.rpm x86_64: screen-4.1.0-0.27.20120314git3c2946.el7_9.x86_64.rpm screen-debuginfo-4.1.0-0.27.20120314git3c2946.el7_9.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: screen-4.1.0-0.27.20120314git3c2946.el7_9.src.rpm x86_64: screen-4.1.0-0.27.20120314git3c2946.el7_9.x86_64.rpm screen-debuginfo-4.1.0-0.27.20120314git3c2946.el7_9.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-2021-26937 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 2021 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPGv1 iQIVAwUBYEX89tzjgjWX9erEAQinug/9E7uT3J68al9+b4V2t1nJVGRE+xuyhQY2 9339PP+mq1EgxhvxA+vhKNa2qEq7VXbfcYB+Vu0D7ufMKLMk+/fRl2flljcZRbBY 3ccN/E/UTqT9SPVL2RnwV1CP2NgDm62c8Ge1QAWX6U9bJN+67LyYxdKyrzVo44UM gt49Z460+mEx/8oOAx3J6ScW5uu/zSUXGDvi6Nm+z0Aq6o4wpb1vm7hRZyyC4K0l RJVpU5NCSnuH5Ow+pRz3rH26KewYynqHB8ncBfdfnhBajdljVQnVEoi8rkXMYpyU Ttpl2rIK4/RT2yKiuOPv9n1HNhrk7IH15B4V5UDLtd+wz7REcBqQ9WjSh8AjM+8/ r9cr1wwK/E7cQ8J4bWrXKYMPB+x+Onofj19EPFRxz9v4b2cPDQ9v9hO0UFTlvZym kH5yY9ftYGymbHTVQtgsBsLWVf5n03dfOWg+z2tHERD825rEUfZN0ZUSacJmOt8c is2upVlEs8FTu7VCjDaqyyAzBsgpye62il0VhSqRRxPqpMX42zf8xzLZerjSrIyr +w2jlHwu8wNo0mAcL/5bsWZZwRYTew5HFCPLiWy4LNQ8ElRDoIV4xf2FCc+Zvwjn KCvzRz3IjE1jFdAr4FRl+C2jPJSrPQDUGf3XMG59TncbYfWgT1c/B7GZxeEXao7g CxavY2AzyNk=syqT -----END PGP SIGNATURE----- -- RHSA-announce mailing list This email address is being protected from spambots. You need JavaScript enabled to view it. https://listman.redhat.com/mailman/listinfo/rhsa-announce . A critical update has been released for Red Hat Enterprise Linux 7, targeting security vulnerabilities that could lead to a crash. Ensure you apply this update promptly for enhanced safety.. Red Hat Enterprise, Screen Update, Security Patch, Important Update. . Severity: Important. LinuxSecurity.com Team

Mar 08, 2021 •Important Red Hat