AmazonALAS-2021-1492Low: screen
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.015 Low
EPSS
Percentile
86.5%
Issue Overview:
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)
Affected Packages:
screen
Issue Correction:
Run yum update screen to update your system.
New Packages:
i686:
screen-debuginfo-4.0.3-19.7.amzn1.i686
screen-4.0.3-19.7.amzn1.i686
src:
screen-4.0.3-19.7.amzn1.src
x86_64:
screen-debuginfo-4.0.3-19.7.amzn1.x86_64
screen-4.0.3-19.7.amzn1.x86_64
Additional References
Red Hat: CVE-2021-26937
Mitre: CVE-2021-26937
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Amazon Linux | 1 | i686 | screen-debuginfo | < 4.0.3-19.7.amzn1 | screen-debuginfo-4.0.3-19.7.amzn1.i686.rpm |
| Amazon Linux | 1 | i686 | screen | < 4.0.3-19.7.amzn1 | screen-4.0.3-19.7.amzn1.i686.rpm |
| Amazon Linux | 1 | x86_64 | screen-debuginfo | < 4.0.3-19.7.amzn1 | screen-debuginfo-4.0.3-19.7.amzn1.x86_64.rpm |
| Amazon Linux | 1 | x86_64 | screen | < 4.0.3-19.7.amzn1 | screen-4.0.3-19.7.amzn1.x86_64.rpm |
Related
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.015 Low
EPSS
Percentile
86.5%