CVE-2019-14868 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Severity

78%

Complexity

18%

Confidentiality

98%

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.

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 Base Score 7.8. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

CVSS 2.0 Base Score 7.2. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (AV:L/AC:L/Au:N/C:C/I:C/A:C).

Overview

First reported 4 years ago

2020-04-02 17:15:00

Last updated 4 years ago

2020-05-29 20:15:00

Affected Software

ksh Project ksh 20120801

20120801

References

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

20200529 APPLE-SA-2020-05-26-3 macOS Catalina 10.15.5, Security Update 2020-003 Mojave, Security Update 2020-003 High Sierra

https://support.apple.com/kb/HT211170

Stay updated

ExploitPedia is constantly evolving. Sign up to receive a notification when we release additional functionality.

Get in touch

If you'd like to report a bug or have any suggestions for improvements then please do get in touch with us using this form. We will get back to you as soon as we can.