CVE-2019-14868

CVSS 7.4 HIGHEPSS 1.4%CWE-77

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.4EPSS 1.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

02 Apr 2020Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

KornShell · ksh

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14868 http://seclists.org/fulldisclosure/2020/May/53 https://github.com/att/ast/commit/c7de8b641266bac7c77942239ac659edfee9ecd2 https://lists.debian.org/debian-lts-announce/2020/07/msg00015.html https://support.apple.com/kb/HT211170