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Red Hat Enterprise Linux 8 RHSA-2020-0559-01 Important: ksh Code Injection

An update for ksh 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. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: ksh security update Advisory ID: RHSA-2020:0559-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2020:0559 Issue date: 2020-02-20 CVE Names: CVE-2019-14868 ==================================================================== 1. Summary: An update for ksh 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: KornShell (ksh) is a Unix shell developed by AT&T Bell Laboratories, which is backward-compatible with the Bourne shell (sh) and includes many features of the C shell. The most recent version is KSH-93. KornShell complies with the POSIX.2 standard (IEEE Std 1003.2-1992). Security Fix(es): * ksh: certain environment variables interpreted as arithmetic expressions on startup, leading to code injection (CVE-2019-14868) 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, referto: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1757324 - CVE-2019-14868 ksh: certain environment variables interpreted as arithmetic expressions on startup, leading to code injection 6. Package List: Red Hat Enterprise Linux AppStream (v. 8): Source: ksh-20120801-253.el8_1.src.rpm aarch64: ksh-20120801-253.el8_1.aarch64.rpm ksh-debuginfo-20120801-253.el8_1.aarch64.rpm ksh-debugsource-20120801-253.el8_1.aarch64.rpm ppc64le: ksh-20120801-253.el8_1.ppc64le.rpm ksh-debuginfo-20120801-253.el8_1.ppc64le.rpm ksh-debugsource-20120801-253.el8_1.ppc64le.rpm s390x: ksh-20120801-253.el8_1.s390x.rpm ksh-debuginfo-20120801-253.el8_1.s390x.rpm ksh-debugsource-20120801-253.el8_1.s390x.rpm x86_64: ksh-20120801-253.el8_1.x86_64.rpm ksh-debuginfo-20120801-253.el8_1.x86_64.rpm ksh-debugsource-20120801-253.el8_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-2019-14868 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: GnuPGv1 iQIVAwUBXk6ZhNzjgjWX9erEAQiwGg//akKaWjLCS7bWNE9r6nb/hk0rhybrMsba 946SZHYTNMf2g534OWR4/bpH8ZfUb5gAeJrPjw2PGrBDRvSPQ3SeQB/9f77sMigh RvizySXwRVwHFOUgp0YpzBVV2fiyW7OE8ddEzRwWKwy3tXHy9IVsgKRsdEqBEQXb 8opZPKj/AoRx6FkHxW15aoBSegDihQCdAekpBRIY21lCBaOtmRi3i7/cYCrxIeq/ VL+JIg3M11bCDovW7dcbldrlxi02ClZRnZ4dqON0SO5I1XxGU/FKoXtwutM69VFC xxrq04MDd+G/r8Fj4KU8Y+LmnvwwjEJrwlIZ/qmaE696MylGSdKdFtr3hnYhXJqz Z2QLFjo0eMdWKpMbz/vI3QZ3nhhBZiRGQRvjnTL3A275WWdraWQusBZhMy8oHfdB 79if7C5SnY6p6dWBmxszWH6KgYLU1qszlWW8HThn7pGwR70RXCFSsjvHYUu1H3Pp bGFyCRL8YJbpIrPhOx/0gwaUpnqgS+pkTQX8CRYAj73ug6wOOaKe41d/drPknrBL zIcLqBEZZaHVdvZrhvPM3m+ck1w/ZVfh102TD0IK2eLEH2Z3kzNCVLt8cODYeOyY 5ds3/lHllH7CGpzR41o9TmmQhstwhcALBfk8IX18euVkJ3Oh3EobXsFxtAsN0Gne BlFkgBTvEiI=ESAw -----END PGP SIGNATURE----- -- RHSA-announce mailing list This email address is being protected from spambots. You need JavaScript enabled to view it. . Red Hat reveals a significant security patch for KornShell in Enterprise Linux 8, addressing critical vulnerabilities related to code injection hazards.. kornshell security, red hat advisory, code injection fix, security update, enterprise linux security. . Severity: Important. LinuxSecurity.com Team

Feb 20, 2020 •Important Red Hat