CVE-2019-14868

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.

Category

7.4
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.70% Top 30%
Third-Party Advisory seclists.org Third-Party Advisory redhat.com Third-Party Advisory github.com Third-Party Advisory debian.org Third-Party Advisory apple.com
Affected: KornShell ksh
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14868 issue tracking third party advisory
https://github.com/att/ast/commit/c7de8b641266bac7c77942239ac659edfee9ecd2 third party advisory patch
https://support.apple.com/kb/HT211170 third party advisory
http://seclists.org/fulldisclosure/2020/May/53 third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2020/07/msg00015.html third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2019-14868?
CVE-2019-14868 has been scored as a high severity vulnerability.
How to fix CVE-2019-14868?
To fix CVE-2019-14868, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-14868 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-14868 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-14868?
CVE-2019-14868 affects KornShell ksh.
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