CVE-2019-14868
CVE-2019-14868 is a high-severity vulnerability in Ksh Project Ksh with a CVSS 3.x base score of 7.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-77.
Key facts
- Severity: High (CVSS 3.x base score 7.4)
- CVSS v2: 7.2
- EPSS exploit prediction: 1% (69th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-77
- Affected product: Ksh Project Ksh
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2019-14868?
- 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.
- How severe is CVE-2019-14868?
- CVE-2019-14868 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2019-14868 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2019-14868?
- CVE-2019-14868 primarily affects Ksh Project Ksh. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2019-14868?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2019-14868 published?
- CVE-2019-14868 was published on 2020-04-02 and last updated on 2026-06-17.
References
- http://seclists.org/fulldisclosure/2020/May/53
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14868
- https://github.com/att/ast/commit/c7de8b641266bac7c77942239ac659edfee9ecd2
- https://lists.debian.org/debian-lts-announce/2020/07/msg00015.html
- https://support.apple.com/kb/HT211170
Affected products (3)
- cpe:2.3:a:ksh_project:ksh:20120801:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
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