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RedHat: RHSA-2020-0853-01 Important: Zsh Security Risk and Update

An update for zsh 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: zsh security update Advisory ID: RHSA-2020:0853-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2020:0853 Issue date: 2020-03-17 CVE Names: CVE-2019-20044 ==================================================================== 1. Summary: An update for zsh 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 Client Optional (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64 3. Description: The zsh shell is a command interpreter usable as an interactive login shell and as a shell script command processor. Zsh resembles the ksh shell (the Korn shell), but includes many enhancements. Zsh supports command-line editing, built-in spelling correction, programmable command completion, shell functions (with autoloading), a history mechanism, andmore. Security Fix(es): * zsh: insecure dropping of privileges when unsetting PRIVILEGED option (CVE-2019-20044) 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/): 1804859 - CVE-2019-20044 zsh: insecure dropping of privileges when unsetting PRIVILEGED option 6. Package List: Red Hat Enterprise Linux Client (v. 7): Source: zsh-5.0.2-34.el7_7.2.src.rpm x86_64: zsh-5.0.2-34.el7_7.2.x86_64.rpm zsh-debuginfo-5.0.2-34.el7_7.2.x86_64.rpm Red Hat Enterprise Linux Client Optional (v. 7): x86_64: zsh-debuginfo-5.0.2-34.el7_7.2.x86_64.rpm zsh-html-5.0.2-34.el7_7.2.x86_64.rpm Red Hat Enterprise Linux ComputeNode (v. 7): Source: zsh-5.0.2-34.el7_7.2.src.rpm x86_64: zsh-5.0.2-34.el7_7.2.x86_64.rpm zsh-debuginfo-5.0.2-34.el7_7.2.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional (v. 7): x86_64: zsh-debuginfo-5.0.2-34.el7_7.2.x86_64.rpm zsh-html-5.0.2-34.el7_7.2.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: zsh-5.0.2-34.el7_7.2.src.rpm ppc64: zsh-5.0.2-34.el7_7.2.ppc64.rpm zsh-debuginfo-5.0.2-34.el7_7.2.ppc64.rpm ppc64le: zsh-5.0.2-34.el7_7.2.ppc64le.rpm zsh-debuginfo-5.0.2-34.el7_7.2.ppc64le.rpm s390x: zsh-5.0.2-34.el7_7.2.s390x.rpm zsh-debuginfo-5.0.2-34.el7_7.2.s390x.rpm x86_64: zsh-5.0.2-34.el7_7.2.x86_64.rpm zsh-debuginfo-5.0.2-34.el7_7.2.x86_64.rpm Red Hat Enterprise Linux Server Optional (v.7): ppc64: zsh-debuginfo-5.0.2-34.el7_7.2.ppc64.rpm zsh-html-5.0.2-34.el7_7.2.ppc64.rpm ppc64le: zsh-debuginfo-5.0.2-34.el7_7.2.ppc64le.rpm zsh-html-5.0.2-34.el7_7.2.ppc64le.rpm s390x: zsh-debuginfo-5.0.2-34.el7_7.2.s390x.rpm zsh-html-5.0.2-34.el7_7.2.s390x.rpm x86_64: zsh-debuginfo-5.0.2-34.el7_7.2.x86_64.rpm zsh-html-5.0.2-34.el7_7.2.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: zsh-5.0.2-34.el7_7.2.src.rpm x86_64: zsh-5.0.2-34.el7_7.2.x86_64.rpm zsh-debuginfo-5.0.2-34.el7_7.2.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 7): x86_64: zsh-debuginfo-5.0.2-34.el7_7.2.x86_64.rpm zsh-html-5.0.2-34.el7_7.2.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-2019-20044 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. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBXnD41tzjgjWX9erEAQhgPA/+PgIItb/HJ9YXJomAsdq3APiP7T2hMXTH foaSOYTp5MLH70q43DhF8kFifBn1p3iUNl5M6IHqGHCnRyf+xGKpoMIwQduvMc4c wI+FEwpDU9uPPyOAxtmoc1MnBh0r970b1OOCcCqmehpwP792Q827i54k3fueF0tH mRXcho8mX2TKPY1kTmfkYkj56Tj7OTj7b7A5WR/bmOr/mRCQLHe6QrwQnYx60iJX ocX/vBgsgZKQbdf+vbB3LadkjVwhGByxdQHNifMhA1ce6TtVH3sg8N9Kb6VlOp1n xGB+J/hApDa7DQ7/C6LVfZSB1FIL8URwzFfNDgcScKfAtLNkJ5gd3ujohgyPtO58 f99lLWI9Wo0zz0ZG+rOO2eAwTMpbMj4TLt7vym44BjoZCQ1MTpZ4MiwV6nUSQEtm 3ScJ6d0Ds6MUWWj9gBmtkqSIgVpJzCLrhhOSyiVsf0ZVnX2kTW2qu4+MQQaoHXfr nvtPUOxM4ANjlY4qsujwKGclJdK35H/pQGGVoU34F70iVhoN2QuRg+DsIvZUWRlC OV4GDt3qJFID05jdjZ5Csl2KCPlmh3eR4eXv26JnH5dSiHdTFCRkz0pkf+0W8PS4 gHuLgBkqTQwehzJHpjoZLDGkGGY4BF49TfDCJyfByQb0WR0Rr56+cr2H/haZHu79 49FwaT0V+1Q=3RgJ -----END PGP SIGNATURE----- -- RHSA-announce mailing list This email address is being protected from spambots. You need JavaScript enabled to view it. . Crucial zsh security patch for CentOS 7 resolves avulnerability related to improper permissions in the zsh environment.. Red Hat Security, Zsh Update, Shell Security, Linux Advisory, Important Security Update. . Severity: Important. LinuxSecurity.com Team

Mar 17, 2020 •Important Red Hat