Oracle Linux 6 : ksh (ELSA-2020-0515)

high Nessus Plugin ID 133780

Synopsis

The remote Oracle Linux host is missing a security update.

Description

From Red Hat Security Advisory 2020:0515 :

An update for ksh is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

KornShell (ksh) is a Unix shell developed by AT&T Bell Laboratories, which is backward-compatible with the Bourne shell (sh) and includes many features of the C shell. The most recent version is KSH-93.
KornShell complies with the POSIX.2 standard (IEEE Std 1003.2-1992).

Security Fix(es) :

* ksh: certain environment variables interpreted as arithmetic expressions on startup, leading to code injection (CVE-2019-14868)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

Update the affected ksh package.

See Also

https://oss.oracle.com/pipermail/el-errata/2020-February/009639.html

Plugin Details

Severity: High

ID: 133780

File Name: oraclelinux_ELSA-2020-0515.nasl

Version: 1.4

Type: local

Agent: unix

Published: 2/19/2020

Updated: 3/27/2024

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2019-14868

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:ksh, cpe:/o:oracle:linux:6

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/OracleLinux

Exploit Ease: No known exploits are available

Patch Publication Date: 2/18/2020

Vulnerability Publication Date: 4/2/2020

Reference Information

CVE: CVE-2019-14868

RHSA: 2020:0515