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Amazon Linux 2 : patch (ALAS-2019-1317)

high Nessus Plugin ID 130214

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Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

do_ed_script in pch.c in GNU patch through 2.7.6 does not block strings beginning with a ! character. NOTE: this is the same commit as for CVE-2019-13638 , but the ! syntax is specific to ed, and is unrelated to a shell metacharacter.(CVE-2018-20969)

GNU patch through 2.7.6 is vulnerable to OS shell command injection that can be exploited by opening a crafted patch file that contains an ed style diff payload with shell metacharacters. The ed editor does not need to be present on the vulnerable system. This is different from CVE-2018-1000156 .(CVE-2019-13638)

A heap-based out-of-bounds read flaw was found in the way the patch utility parsed patch files. An attacker could potentially use this flaw to crash the patch utility by tricking it into processing crafted patch files.(CVE-2016-10713)

A double-free flaw was found in the way the patch utility processed patch files. An attacker could potentially use this flaw to crash the patch utility by tricking it into processing crafted patches.(CVE-2018-6952)

Solution

Run 'yum update patch' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2019-1317.html

Plugin Details

Severity: High

ID: 130214

File Name: al2_ALAS-2019-1317.nasl

Version: 1.4

Type: local

Agent: unix

Published: 10/25/2019

Updated: 4/17/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 7.3

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

CVSS Score Source: CVE-2019-13638

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:patch-debuginfo, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:patch

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/7/2019

Vulnerability Publication Date: 2/13/2018

Reference Information

CVE: CVE-2016-10713, CVE-2018-20969, CVE-2018-6952, CVE-2019-13638

ALAS: 2019-1317