# CVE-2019-14868: Command injection in ksh > An attacker can execute arbitrary shell commands by manipulating environment variables in KornShell, potentially compromising systems running vulnerable versions. - **Severity:** High 7.4 (`CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Local or same network only - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 2 Apr 2020 - **Updated:** 5 Aug 2024 - **Also known as:** DEBIAN-CVE-2019-14868, DLA-2284-1, GHSA-2x84-7422-962r, MGASA-2021-0141, RHSA-2020:0431, RHSA-2020:0515, RHSA-2020:0559, RHSA-2020:0568, RHSA-2020:1332, RHSA-2020:1333, RHSA-2020:2210, RHSA-2020:5351, RHSA-2020:5352, SUSE-SU-2024:2756-1, UBUNTU-CVE-2019-14868, openSUSE-SU-2024:14252-1 ## What is CVE-2019-14868? CVE-2019-14868 is a high-severity command injection vulnerability in Apple Mac Os X, published on 2 Apr 2020. It can only be exploited from the same machine or local network, with no action from the victim. ### Official 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. Weakness: CWE-77 (Improper Neutralization of Special Elements used in a Command) ## Which versions are affected by CVE-2019-14868? It affects 3 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `ksh` | Red Hat:enterprise_linux:6::client | All versions | 0:20120801-38.el6_10 | | `ksh-debuginfo` | Red Hat:enterprise_linux:6::client | All versions | 0:20120801-38.el6_10 | | `ksh` | Red Hat:enterprise_linux:6::computenode | All versions | 0:20120801-38.el6_10 | | `ksh-debuginfo` | Red Hat:enterprise_linux:6::computenode | All versions | 0:20120801-38.el6_10 | | `ksh` | Red Hat:enterprise_linux:6::server | All versions | 0:20120801-38.el6_10 | | `ksh-debuginfo` | Red Hat:enterprise_linux:6::server | All versions | 0:20120801-38.el6_10 | | `ksh` | Red Hat:enterprise_linux:6::workstation | All versions | 0:20120801-38.el6_10 | | `ksh-debuginfo` | Red Hat:enterprise_linux:6::workstation | All versions | 0:20120801-38.el6_10 | | `ksh` | Red Hat:enterprise_linux:7::client | All versions | 0:20120801-140.el7_7 | | `ksh-debuginfo` | Red Hat:enterprise_linux:7::client | All versions | 0:20120801-140.el7_7 | | `ksh` | Red Hat:enterprise_linux:7::computenode | All versions | 0:20120801-140.el7_7 | | `ksh-debuginfo` | Red Hat:enterprise_linux:7::computenode | All versions | 0:20120801-140.el7_7 | | `ksh` | Red Hat:enterprise_linux:7::server | All versions | 0:20120801-140.el7_7 | | `ksh-debuginfo` | Red Hat:enterprise_linux:7::server | All versions | 0:20120801-140.el7_7 | | `ksh` | Red Hat:enterprise_linux:7::workstation | All versions | 0:20120801-140.el7_7 | | `ksh-debuginfo` | Red Hat:enterprise_linux:7::workstation | All versions | 0:20120801-140.el7_7 | | `ksh` | Red Hat:enterprise_linux:8::appstream | All versions | 0:20120801-253.el8_1 | | `ksh-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:20120801-253.el8_1 | | `ksh-debugsource` | Red Hat:enterprise_linux:8::appstream | All versions | 0:20120801-253.el8_1 | | `ksh` | Red Hat:rhel_aus:7.2::server | All versions | 0:20120801-26.el7_2 | | `ksh-debuginfo` | Red Hat:rhel_aus:7.2::server | All versions | 0:20120801-26.el7_2 | | `ksh` | Red Hat:rhel_aus:7.3::server | All versions | 0:20120801-27.el7_3 | | `ksh-debuginfo` | Red Hat:rhel_aus:7.3::server | All versions | 0:20120801-27.el7_3 | | `ksh` | Red Hat:rhel_aus:7.4::server | All versions | 0:20120801-36.el7_4 | | `ksh-debuginfo` | Red Hat:rhel_aus:7.4::server | All versions | 0:20120801-36.el7_4 | | `ksh` | Red Hat:rhel_e4s:7.4::server | All versions | 0:20120801-36.el7_4 | | `ksh-debuginfo` | Red Hat:rhel_e4s:7.4::server | All versions | 0:20120801-36.el7_4 | | `ksh` | Red Hat:rhel_e4s:8.0::appstream | All versions | 0:20120801-253.el8_0 | | `ksh-debuginfo` | Red Hat:rhel_e4s:8.0::appstream | All versions | 0:20120801-253.el8_0 | | `ksh-debugsource` | Red Hat:rhel_e4s:8.0::appstream | All versions | 0:20120801-253.el8_0 | | `ksh` | Red Hat:rhel_eus:7.5::computenode | All versions | 0:20120801-138.el7_5 | | `ksh-debuginfo` | Red Hat:rhel_eus:7.5::computenode | All versions | 0:20120801-138.el7_5 | | `ksh` | Red Hat:rhel_eus:7.5::server | All versions | 0:20120801-138.el7_5 | | `ksh-debuginfo` | Red Hat:rhel_eus:7.5::server | All versions | 0:20120801-138.el7_5 | | `ksh` | Red Hat:rhel_eus:7.6::computenode | All versions | 0:20120801-140.el7_6 | | `ksh-debuginfo` | Red Hat:rhel_eus:7.6::computenode | All versions | 0:20120801-140.el7_6 | | `ksh` | Red Hat:rhel_eus:7.6::server | All versions | 0:20120801-140.el7_6 | | `ksh-debuginfo` | Red Hat:rhel_eus:7.6::server | All versions | 0:20120801-140.el7_6 | | `ksh` | Red Hat:rhel_tus:7.4::server | All versions | 0:20120801-36.el7_4 | | `ksh-debuginfo` | Red Hat:rhel_tus:7.4::server | All versions | 0:20120801-36.el7_4 | Products: Apple Mac Os X, Debian Debian Linux, Ksh Project Ksh. ## How do I fix CVE-2019-14868? Apply the vendor's patch. ## Is CVE-2019-14868 being exploited? There is no known exploitation of CVE-2019-14868 in the wild and no public exploit code. ## Other vulnerabilities in Apple Mac Os X - [CVE-2014-7169](https://insights.sbomify.com/CVE-2014-7169/): GNU Bourne-Again Shell (Bash) Arbitrary Code Execution (critical 9.8, exploited in the wild) - [CVE-2014-6271](https://insights.sbomify.com/CVE-2014-6271/): GNU Bourne-Again Shell (Bash) Arbitrary Code Execution (critical 9.8, exploited in the wild) - [CVE-2012-1823](https://insights.sbomify.com/CVE-2012-1823/): PHP-CGI Query String Parameter (critical 9.8, exploited in the wild) - [CVE-2021-30713](https://insights.sbomify.com/CVE-2021-30713/): Apple macOS Unspecified (high 7.8, exploited in the wild) - [CVE-2019-8526](https://insights.sbomify.com/CVE-2019-8526/): Apple macOS Use-After-Free (high 7.8, exploited in the wild) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2019-14868 and fix it if it is affected. What it is: CVE-2019-14868 is a high-severity command injection vulnerability in Apple Mac Os X, published on 2 Apr 2020. It can only be exploited from the same machine or local network, with no action from the victim. Exploitation: There is no known exploitation of CVE-2019-14868 in the wild and no public exploit code. Affected product: Apple Mac Os X. No package-level version data is available, so check the vendor advisory linked from the reference page. Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2019-14868/ (Markdown: https://insights.sbomify.com/CVE-2019-14868/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2019-14868 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-14868 - OSV: https://osv.dev/vulnerability/CVE-2019-14868 --- From sbomify Insights: https://insights.sbomify.com/CVE-2019-14868/ Summaries are generated and may contain mistakes; the official description above is the record.