Detections
Analytics
Amazon Linux AMI : screen (ALAS-2021-1492)
critical Nessus Plugin ID 148377
Language:
Synopsis
The remote Amazon Linux AMI host is missing a security update.Description
The version of screen installed on the remote host is prior to 4.0.3-19.7. It is, therefore, affected by a vulnerability as referenced in the ALAS-2021-1492 advisory.A flaw was found in screen. A specially crafted sequence of combining characters could cause an out of bounds write leading to arbitrary code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-26937)
Tenable has extracted the preceding description block directly from the tested product security advisory.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Run 'yum update screen' to update your system.See Also
Plugin Details
Severity: Critical
ID: 148377
File Name: ala_ALAS-2021-1492.nasl
Version: 1.4
Type: local
Agent: unix
Published: 4/7/2021
Updated: 12/11/2024
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: 7.5
Temporal Score: 5.9
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS Score Source: CVE-2021-26937
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 8.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:screen-debuginfo, p-cpe:/a:amazon:linux:screen
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: 4/7/2021
Vulnerability Publication Date: 2/9/2021
Reference Information
CVE: CVE-2021-26937
ALAS: 2021-1492