# CVE-2019-14868: ksh: KornShell (ksh) is a Unix shell developed by AT&T Bell Laboratories, which is backward-compatible with the Bourne she...

CVE-2019-14868 is fixed in ksh on 1 platform, first by RHSA-2020:0559, released February 20, 2020. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2019-14868
- Priority: High
- CVSS: 7.8 (Important)
- EPSS: 0.0139
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 20, 2020

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | ksh RHEL 8 | 0:20120801-253.el8_1 | [RHSA-2020:0559](https://patchblox.com/security/data/fix/linux/rhsa-2020-0559.md) | Feb 20, 2020 |
| Linux | ksh ol 8 | 0:20120801-253.0.1.el8_1 | [ELSA-2020-0559](https://patchblox.com/security/data/fix/linux/elsa-2020-0559.md) | Feb 20, 2020 |

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