ID

VAR-202004-0812

CVE

CVE-2019-14868

TITLE

ksh Injection vulnerabilities in

DESCRIPTION

In ksh version 20120801, a flaw was found in the way it evaluates certain environment variables. An attacker could use this flaw to override or bypass environment restrictions to execute shell commands. Services and applications that allow remote unauthenticated attackers to provide one of those environment variables could allow them to exploit this issue remotely. ksh There is an injection vulnerability in.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be put into a state. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 APPLE-SA-2020-05-26-3 macOS Catalina 10.15.5, Security Update 2020-003 Mojave, Security Update 2020-003 High Sierra macOS Catalina 10.15.5, Security Update 2020-003 Mojave, Security Update 2020-003 High Sierra are now available and address the following: Accounts Available for: macOS Catalina 10.15.4 Impact: A remote attacker may be able to cause a denial of service Description: A denial of service issue was addressed with improved input validation. CVE-2020-9827: Jannik Lorenz of SEEMOO @ TU Darmstadt AirDrop Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4 Impact: A remote attacker may be able to cause a denial of service Description: A denial of service issue was addressed with improved input validation. CVE-2020-9826: Dor Hadad of Palo Alto Networks AppleMobileFileIntegrity Available for: macOS High Sierra 10.13.6, macOS Catalina 10.15.4 Impact: An application may be able to use arbitrary entitlements Description: This issue was addressed with improved checks. CVE-2020-9842: Linus Henze (pinauten.de) AppleUSBNetworking Available for: macOS Catalina 10.15.4 Impact: Inserting a USB device that sends invalid messages may cause a kernel panic Description: A logic issue was addressed with improved restrictions. CVE-2020-9804: Andy Davis of NCC Group Audio Available for: macOS Catalina 10.15.4 Impact: Processing a maliciously crafted audio file may lead to arbitrary code execution Description: An out-of-bounds read was addressed with improved bounds checking. CVE-2020-9815: Yu Zhou (@yuzhou6666) working with Trend Micro Zero Day Initiative Audio Available for: macOS Catalina 10.15.4 Impact: Processing a maliciously crafted audio file may lead to arbitrary code execution Description: An out-of-bounds read was addressed with improved input validation. CVE-2020-9791: Yu Zhou (@yuzhou6666) working with Trend Micro Zero Day Initiative Bluetooth Available for: macOS Catalina 10.15.4 Impact: A malicious application may be able to determine kernel memory layout Description: An out-of-bounds read was addressed with improved bounds checking. CVE-2020-9831: Yu Wang of Didi Research America Calendar Available for: macOS Catalina 10.15.4 Impact: Importing a maliciously crafted calendar invitation may exfiltrate user information Description: This issue was addressed with improved checks. CVE-2020-3882: Andy Grant of NCC Group CVMS Available for: macOS Catalina 10.15.4 Impact: An application may be able to gain elevated privileges Description: This issue was addressed with improved checks. CVE-2020-9856: @jinmo123, @setuid0x0_, and @insu_yun_en of @SSLab_Gatech working with Trend Micro’s Zero Day Initiative DiskArbitration Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4 Impact: A malicious application may be able to break out of its sandbox Description: An out-of-bounds read was addressed with improved bounds checking. CVE-2020-9847: Zhuo Liang of Qihoo 360 Vulcan Team Find My Available for: macOS Catalina 10.15.4 Impact: A local attacker may be able to elevate their privileges Description: A validation issue existed in the handling of symlinks. This issue was addressed with improved validation of symlinks. CVE-2020-9855: Zhongcheng Li(CK01) of Topsec Alpha Team FontParser Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4 Impact: Opening a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution Description: An out-of-bounds write issue was addressed with improved bounds checking. CVE-2020-9816: Peter Nguyen Vu Hoang of STAR Labs working with Trend Micro Zero Day Initiative ImageIO Available for: macOS Catalina 10.15.4 Impact: Processing a maliciously crafted image may lead to arbitrary code execution Description: An out-of-bounds read was addressed with improved input validation. CVE-2020-3878: Samuel Groß of Google Project Zero ImageIO Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4 Impact: Processing a maliciously crafted image may lead to arbitrary code execution Description: An out-of-bounds write issue was addressed with improved bounds checking. CVE-2020-9789: Wenchao Li of VARAS@IIE CVE-2020-9790: Xingwei Lin of Ant-financial Light-Year Security Lab Intel Graphics Driver Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4 Impact: A malicious application may be able to execute arbitrary code with kernel privileges Description: An out-of-bounds write issue was addressed with improved bounds checking. CVE-2020-9822: ABC Research s.r.o IPSec Available for: macOS High Sierra 10.13.6, macOS Catalina 10.15.4 Impact: A remote attacker may be able to leak memory Description: An out-of-bounds read was addressed with improved bounds checking. CVE-2020-9837: Thijs Alkemade of Computest Kernel Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4 Impact: A malicious application may be able to execute arbitrary code with kernel privileges Description: A memory corruption issue was addressed with improved state management. CVE-2020-9821: Xinru Chi and Tielei Wang of Pangu Lab Kernel Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4 Impact: A malicious application may be able to determine another application's memory layout Description: An information disclosure issue was addressed by removing the vulnerable code. CVE-2020-9797: an anonymous researcher Kernel Available for: macOS Catalina 10.15.4 Impact: A malicious application may be able to execute arbitrary code with kernel privileges Description: An integer overflow was addressed through improved input validation. CVE-2020-9852: Tao Huang and Tielei Wang of Pangu Lab Kernel Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4 Impact: An application may be able to execute arbitrary code with kernel privileges Description: A use after free issue was addressed with improved memory management. CVE-2020-9795: Zhuo Liang of Qihoo 360 Vulcan Team Kernel Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4 Impact: An application may be able to cause unexpected system termination or write kernel memory Description: A memory corruption issue was addressed with improved state management. CVE-2020-9808: Xinru Chi and Tielei Wang of Pangu Lab Kernel Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4 Impact: A local user may be able to read kernel memory Description: An information disclosure issue was addressed with improved state management. CVE-2020-9811: Tielei Wang of Pangu Lab CVE-2020-9812: Derrek (@derrekr6) Kernel Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4 Impact: A malicious application may be able to execute arbitrary code with kernel privileges Description: A logic issue existed resulting in memory corruption. This was addressed with improved state management. CVE-2020-9813: Xinru Chi of Pangu Lab CVE-2020-9814: Xinru Chi and Tielei Wang of Pangu Lab Kernel Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4 Impact: A malicious application may be able to determine kernel memory layout Description: An information disclosure issue was addressed with improved state management. CVE-2020-9809: Benjamin Randazzo (@____benjamin) ksh Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4 Impact: A local user may be able to execute arbitrary shell commands Description: An issue existed in the handling of environment variables. This issue was addressed with improved validation. CVE-2019-14868 NSURL Available for: macOS Mojave 10.14.6 Impact: A malicious website may be able to exfiltrate autofilled data in Safari Description: An issue existed in the parsing of URLs. This issue was addressed with improved input validation. CVE-2020-9857: Dlive of Tencent Security Xuanwu Lab PackageKit Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4 Impact: A malicious application may be able to gain root privileges Description: A permissions issue existed. This issue was addressed with improved permission validation. CVE-2020-9817: Andy Grant of NCC Group PackageKit Available for: macOS Catalina 10.15.4 Impact: A malicious application may be able to modify protected parts of the file system Description: An access issue was addressed with improved access restrictions. CVE-2020-9851: Linus Henze (pinauten.de) Python Available for: macOS Catalina 10.15.4 Impact: A remote attacker may be able to cause arbitrary code execution Description: A memory corruption issue was addressed with improved input validation. CVE-2020-9793 Sandbox Available for: macOS Catalina 10.15.4 Impact: A malicious application may be able to bypass Privacy preferences Description: An access issue was addressed with additional sandbox restrictions. CVE-2020-9825: Sreejith Krishnan R (@skr0x1C0) Security Available for: macOS Catalina 10.15.4 Impact: A file may be incorrectly rendered to execute JavaScript Description: A validation issue was addressed with improved input sanitization. CVE-2020-9788: Wojciech Reguła of SecuRing (https://wojciechregula.blog) SIP Available for: macOS Catalina 10.15.4 Impact: A non-privileged user may be able to modify restricted network settings Description: A logic issue was addressed with improved restrictions. CVE-2020-9824: Csaba Fitzl (@theevilbit) of Offensive Security SQLite Available for: macOS Catalina 10.15.4 Impact: A malicious application may cause a denial of service or potentially disclose memory contents Description: An out-of-bounds read was addressed with improved bounds checking. CVE-2020-9794 System Preferences Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4 Impact: An application may be able to gain elevated privileges Description: A race condition was addressed with improved state handling. CVE-2020-9839: @jinmo123, @setuid0x0_, and @insu_yun_en of @SSLab_Gatech working with Trend Micro’s Zero Day Initiative USB Audio Available for: macOS Catalina 10.15.4 Impact: A USB device may be able to cause a denial of service Description: A validation issue was addressed with improved input sanitization. CVE-2020-9792: Andy Davis of NCC Group Wi-Fi Available for: macOS Catalina 10.15.4 Impact: A remote attacker may be able to cause unexpected system termination or corrupt kernel memory Description: A double free issue was addressed with improved memory management. CVE-2020-9844: Ian Beer of Google Project Zero Wi-Fi Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4 Impact: An application may be able to execute arbitrary code with kernel privileges Description: A memory corruption issue was addressed with improved state management. CVE-2020-9830: Tielei Wang of Pangu Lab Wi-Fi Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4 Impact: An application may be able to execute arbitrary code with kernel privileges Description: A memory corruption issue was addressed with improved input validation. CVE-2020-9834: Yu Wang of Didi Research America Wi-Fi Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4 Impact: A local user may be able to read kernel memory Description: A memory initialization issue was addressed with improved memory handling. CVE-2020-9833: Yu Wang of Didi Research America Wi-Fi Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4 Impact: A malicious application may be able to determine kernel memory layout Description: An out-of-bounds read was addressed with improved input validation. CVE-2020-9832: Yu Wang of Didi Research America WindowServer Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4 Impact: An application may be able to execute arbitrary code with kernel privileges Description: An integer overflow was addressed through improved input validation. CVE-2020-9841: ABC Research s.r.o. working with Trend Micro Zero Day Initiative zsh Available for: macOS High Sierra 10.13.6, macOS Mojave 10.14.6, macOS Catalina 10.15.4 Impact: A local attacker may be able to elevate their privileges Description: An authorization issue was addressed with improved state management. CVE-2019-20044: Sam Foxman Additional recognition CoreBluetooth We would like to acknowledge Maximilian von Tschitschnitz of Technical University Munich and Ludwig Peuckert of Technical University Munich for their assistance. CoreText We would like to acknowledge Jiska Classen (@naehrdine) and Dennis Heinze (@ttdennis) of Secure Mobile Networking Lab for their assistance. Endpoint Security We would like to acknowledge an anonymous researcher for their assistance. ImageIO We would like to acknowledge Lei Sun for their assistance. IOHIDFamily We would like to acknowledge Andy Davis of NCC Group for their assistance. IPSec We would like to acknowledge Thijs Alkemade of Computest for their assistance. Login Window We would like to acknowledge Jon Morby and an anonymous researcher for their assistance. Sandbox We would like to acknowledge Jason L Lang of Optum for their assistance. Spotlight We would like to acknowledge Csaba Fitzl (@theevilbit) of Offensive Security for their assistance. Installation note: macOS Catalina 10.15.5, Security Update 2020-003 Mojave, Security Update 2020-003 High Sierra may be obtained from the Mac App Store or Apple's Software Downloads web site: https://support.apple.com/downloads/ -----BEGIN PGP SIGNATURE----- Version: BCPG v1.64 iQIcBAEDCAAGBQJezZcfAAoJEAc+Lhnt8tDNIQYP/0YN+/T85WC7RJjAlRrUDduD ZO0e76d2C1jNgZWsYmXnrEPwfRYAEPLcKgb/SxAlwlRNFqex9CNu2sD1aA3GZBIO MaektARuncqh06rl8BjbakS4HQs675vUEjoJS9H2d0pq2dSEIjOtH1agJwtGIeNS wHBFlUnQzI42hurYeq7fxRdiByf+Z3mKEBt6wlVtaWjqcMfG9sroj9H58RLiqSNm VNfU4eZNPrG49kbTf4IC2JvvKg18hrUZqIcjbV/56+kPBl4+USIxh/5ECJHV/cDD BEe64M2I1LiY0lq6neoOeHvBiiIvUq9EUW2PBnfcbo3V1D35mm6td+WnO3Buqo6f EEkjfIwtq7fI10ZPYYjiUayrQyfqmM3x14JcxDsHzlerT6NNRTg3g2ls0seQK9Lt 8IDbkrseOR0JFukR1njC+cAk4RbDFue5cUJK6Js1nGvFwLN0kHFIhh9jFKgccgH7 bKSLDAdB+kSxBOshDDmYyNS+KRzXEWIsBU8ZbNAbRDANWqm4lcPffKWcG7zIdiMQ JLUclRURf35AoFmJ0F1BZSRzFuHr1Dvh23SjNK7H9i/mD05+rY6esh5ZKco+6Yqe pW/EOXEAs/J06xUytABH3SkFmQSzlIPuFrXa8qAskHhFp/E8yLehyefoY+AZJjal sLrLBIOxQCTskSFoExP8 =2eah -----END PGP SIGNATURE----- . 8.0) - aarch64, ppc64le, s390x, x86_64 3. 7) - aarch64, ppc64le, s390x 3. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: ksh security update Advisory ID: RHSA-2020:0568-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2020:0568 Issue date: 2020-02-24 CVE Names: CVE-2019-14868 ===================================================================== 1. Summary: An update for ksh 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: 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, refer to: https://access.redhat.com/articles/11258 5. Package List: Red Hat Enterprise Linux Client (v. 7): Source: ksh-20120801-140.el7_7.src.rpm x86_64: ksh-20120801-140.el7_7.x86_64.rpm ksh-debuginfo-20120801-140.el7_7.x86_64.rpm Red Hat Enterprise Linux ComputeNode (v. 7): Source: ksh-20120801-140.el7_7.src.rpm x86_64: ksh-20120801-140.el7_7.x86_64.rpm ksh-debuginfo-20120801-140.el7_7.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: ksh-20120801-140.el7_7.src.rpm ppc64: ksh-20120801-140.el7_7.ppc64.rpm ksh-debuginfo-20120801-140.el7_7.ppc64.rpm ppc64le: ksh-20120801-140.el7_7.ppc64le.rpm ksh-debuginfo-20120801-140.el7_7.ppc64le.rpm s390x: ksh-20120801-140.el7_7.s390x.rpm ksh-debuginfo-20120801-140.el7_7.s390x.rpm x86_64: ksh-20120801-140.el7_7.x86_64.rpm ksh-debuginfo-20120801-140.el7_7.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: ksh-20120801-140.el7_7.src.rpm x86_64: ksh-20120801-140.el7_7.x86_64.rpm ksh-debuginfo-20120801-140.el7_7.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 <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 iQIVAwUBXlOOA9zjgjWX9erEAQgOXw/+OWH1g/SGbvdQY69D+HGvuk5RMaCTmwBn dYRRUc8FXDwf/6G4sbxL5sq82qy/gmYESgfq6NxQO+9KjaxagFmSyiZYKDTofAn8 LKPgcb+J5oaEjy6X+lq9XFgg/YolTypcEyNjJnC/snI4s9NCQ01HJItGSA6sgSb5 OwUye7+Lvc8wG8J1k/AGj0Vh7+FdhMacuUqwMyMRdy13vj7phoWPr1TD4HehtvnA VY09JzKFqigZHz+Xo5rWBuh1zYCwy10nhH4inv7hPOQPrGHDHUdbjIHy1QVHGxh2 R5lP7eYlzYYMF2nZ3TqMAmg/a/EzuBerrInYzDilkAKFOMh3ZgT0wuMTrD8TkeUn ADoYH8TQ+87T0tGIfOhMvKqkOumyEHiAq+UhUjWDZ2PRwWIPN9ZwsNA0GNiik0y4 5CiXkr12FmQfpFYV6qRQj5/H46LJqpqD8+y+ematvQ/+x72CD8npL713GYcqLVcG kiSymMUQ9M7ogii3+ywQ7XekLD7UrttuHEPkt7vqf/G0vPEnVtTJEYxYptcX5OwR yyvMLQY6DGMG3qVKESvuQiyPg9NuSiMi65gKa1xmZlCZVAAckGByX79CKUpwD68v 1v5TitsFUEPATeGz120IrAsKT0jNw1u78lPLm5xF8WjxqUHz7I2fzIfqPiiSb0Xw JJzJ5hx7fqE= =nxo3 -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . 7.5) - ppc64, ppc64le, s390x, x86_64 3

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

local

TYPE

command injection

CONFIGURATIONS

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Red Hat

SOURCES

LAST UPDATE DATE

2025-09-11T21:09:21.481000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE