CVE-2019-14868

HIGH | Platform: macOS | Changelog

CVE Details

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.

CVSS 3.1 Score

Metric	Value
Base Score	7.4 (HIGH)
Vector	`CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H`

Weakness

CWE-77

References

Apple Security Advisory
NVD Entry
http://seclists.org/fulldisclosure/2020/May/53 (Mailing List, Third Party Advisory)
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14868 (Issue Tracking, Third Party Advisory)
https://github.com/att/ast/commit/c7de8b641266bac7c77942239ac659edfee9ecd2 (Patch, Third Party Advisory)
https://lists.debian.org/debian-lts-announce/2020/07/msg00015.html (Mailing List, Third Party Advisory)