CVE-2021-26937

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Source
https://nvd.nist.gov/vuln/detail/CVE-2021-26937
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-26937.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-26937
Related
Published
2021-02-09T20:15:14Z
Modified
2025-05-22T03:14:42.133937Z
Downstream
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

encoding.c in GNU Screen through 4.8.0 allows remote attackers to cause a denial of service (invalid write access and application crash) or possibly have unspecified other impact via a crafted UTF-8 character sequence.

References

Affected packages

Alpine:v3.10 / screen

Package

Name
screen
Purl
pkg:apk/alpine/screen?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.6.2-r2

Affected versions

4.*

4.0.3-r0
4.0.3-r1
4.0.3-r2
4.0.3-r3
4.0.3-r4
4.2.1-r0
4.2.1-r1
4.2.1-r2
4.2.1-r3
4.3.1-r0
4.3.1-r1
4.3.1-r2
4.3.1-r3
4.3.1-r4
4.4.0-r0
4.5.0-r0
4.5.1-r0
4.5.1-r1
4.6.0-r0
4.6.1-r0
4.6.1-r1
4.6.2-r0
4.6.2-r1

Alpine:v3.11 / screen

Package

Name
screen
Purl
pkg:apk/alpine/screen?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.7.0-r2

Affected versions

4.*

4.0.3-r0
4.0.3-r1
4.0.3-r2
4.0.3-r3
4.0.3-r4
4.2.1-r0
4.2.1-r1
4.2.1-r2
4.2.1-r3
4.3.1-r0
4.3.1-r1
4.3.1-r2
4.3.1-r3
4.3.1-r4
4.4.0-r0
4.5.0-r0
4.5.1-r0
4.5.1-r1
4.6.0-r0
4.6.1-r0
4.6.1-r1
4.6.2-r0
4.7.0-r0
4.7.0-r1

Alpine:v3.12 / screen

Package

Name
screen
Purl
pkg:apk/alpine/screen?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.8.0-r1

Affected versions

4.*

4.0.3-r0
4.0.3-r1
4.0.3-r2
4.0.3-r3
4.0.3-r4
4.2.1-r0
4.2.1-r1
4.2.1-r2
4.2.1-r3
4.3.1-r0
4.3.1-r1
4.3.1-r2
4.3.1-r3
4.3.1-r4
4.4.0-r0
4.5.0-r0
4.5.1-r0
4.5.1-r1
4.6.0-r0
4.6.1-r0
4.6.1-r1
4.6.2-r0
4.7.0-r0
4.8.0-r0

Alpine:v3.13 / screen

Package

Name
screen
Purl
pkg:apk/alpine/screen?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.8.0-r4

Affected versions

4.*

4.0.3-r0
4.0.3-r1
4.0.3-r2
4.0.3-r3
4.0.3-r4
4.2.1-r0
4.2.1-r1
4.2.1-r2
4.2.1-r3
4.3.1-r0
4.3.1-r1
4.3.1-r2
4.3.1-r3
4.3.1-r4
4.4.0-r0
4.5.0-r0
4.5.1-r0
4.5.1-r1
4.6.0-r0
4.6.1-r0
4.6.1-r1
4.6.2-r0
4.7.0-r0
4.8.0-r0
4.8.0-r1
4.8.0-r2
4.8.0-r3

Alpine:v3.14 / screen

Package

Name
screen
Purl
pkg:apk/alpine/screen?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.8.0-r4

Affected versions

4.*

4.0.3-r0
4.0.3-r1
4.0.3-r2
4.0.3-r3
4.0.3-r4
4.2.1-r0
4.2.1-r1
4.2.1-r2
4.2.1-r3
4.3.1-r0
4.3.1-r1
4.3.1-r2
4.3.1-r3
4.3.1-r4
4.4.0-r0
4.5.0-r0
4.5.1-r0
4.5.1-r1
4.6.0-r0
4.6.1-r0
4.6.1-r1
4.6.2-r0
4.7.0-r0
4.8.0-r0
4.8.0-r1
4.8.0-r2
4.8.0-r3

Alpine:v3.15 / screen

Package

Name
screen
Purl
pkg:apk/alpine/screen?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.8.0-r4

Affected versions

4.*

4.0.3-r0
4.0.3-r1
4.0.3-r2
4.0.3-r3
4.0.3-r4
4.2.1-r0
4.2.1-r1
4.2.1-r2
4.2.1-r3
4.3.1-r0
4.3.1-r1
4.3.1-r2
4.3.1-r3
4.3.1-r4
4.4.0-r0
4.5.0-r0
4.5.1-r0
4.5.1-r1
4.6.0-r0
4.6.1-r0
4.6.1-r1
4.6.2-r0
4.7.0-r0
4.8.0-r0
4.8.0-r1
4.8.0-r2
4.8.0-r3

Alpine:v3.16 / screen

Package

Name
screen
Purl
pkg:apk/alpine/screen?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.8.0-r4

Affected versions

4.*

4.0.3-r0
4.0.3-r1
4.0.3-r2
4.0.3-r3
4.0.3-r4
4.2.1-r0
4.2.1-r1
4.2.1-r2
4.2.1-r3
4.3.1-r0
4.3.1-r1
4.3.1-r2
4.3.1-r3
4.3.1-r4
4.4.0-r0
4.5.0-r0
4.5.1-r0
4.5.1-r1
4.6.0-r0
4.6.1-r0
4.6.1-r1
4.6.2-r0
4.7.0-r0
4.8.0-r0
4.8.0-r1
4.8.0-r2
4.8.0-r3

Alpine:v3.17 / screen

Package

Name
screen
Purl
pkg:apk/alpine/screen?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.8.0-r4

Affected versions

4.*

4.0.3-r0
4.0.3-r1
4.0.3-r2
4.0.3-r3
4.0.3-r4
4.2.1-r0
4.2.1-r1
4.2.1-r2
4.2.1-r3
4.3.1-r0
4.3.1-r1
4.3.1-r2
4.3.1-r3
4.3.1-r4
4.4.0-r0
4.5.0-r0
4.5.1-r0
4.5.1-r1
4.6.0-r0
4.6.1-r0
4.6.1-r1
4.6.2-r0
4.7.0-r0
4.8.0-r0
4.8.0-r1
4.8.0-r2
4.8.0-r3

Alpine:v3.18 / screen

Package

Name
screen
Purl
pkg:apk/alpine/screen?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.8.0-r4

Affected versions

4.*

4.0.3-r0
4.0.3-r1
4.0.3-r2
4.0.3-r3
4.0.3-r4
4.2.1-r0
4.2.1-r1
4.2.1-r2
4.2.1-r3
4.3.1-r0
4.3.1-r1
4.3.1-r2
4.3.1-r3
4.3.1-r4
4.4.0-r0
4.5.0-r0
4.5.1-r0
4.5.1-r1
4.6.0-r0
4.6.1-r0
4.6.1-r1
4.6.2-r0
4.7.0-r0
4.8.0-r0
4.8.0-r1
4.8.0-r2
4.8.0-r3

Alpine:v3.19 / screen

Package

Name
screen
Purl
pkg:apk/alpine/screen?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.8.0-r4

Affected versions

4.*

4.0.3-r0
4.0.3-r1
4.0.3-r2
4.0.3-r3
4.0.3-r4
4.2.1-r0
4.2.1-r1
4.2.1-r2
4.2.1-r3
4.3.1-r0
4.3.1-r1
4.3.1-r2
4.3.1-r3
4.3.1-r4
4.4.0-r0
4.5.0-r0
4.5.1-r0
4.5.1-r1
4.6.0-r0
4.6.1-r0
4.6.1-r1
4.6.2-r0
4.7.0-r0
4.8.0-r0
4.8.0-r1
4.8.0-r2
4.8.0-r3

Alpine:v3.20 / screen

Package

Name
screen
Purl
pkg:apk/alpine/screen?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.8.0-r4

Affected versions

4.*

4.0.3-r0
4.0.3-r1
4.0.3-r2
4.0.3-r3
4.0.3-r4
4.2.1-r0
4.2.1-r1
4.2.1-r2
4.2.1-r3
4.3.1-r0
4.3.1-r1
4.3.1-r2
4.3.1-r3
4.3.1-r4
4.4.0-r0
4.5.0-r0
4.5.1-r0
4.5.1-r1
4.6.0-r0
4.6.1-r0
4.6.1-r1
4.6.2-r0
4.7.0-r0
4.8.0-r0
4.8.0-r1
4.8.0-r2
4.8.0-r3

Alpine:v3.21 / screen

Package

Name
screen
Purl
pkg:apk/alpine/screen?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.8.0-r4

Affected versions

4.*

4.0.3-r0
4.0.3-r1
4.0.3-r2
4.0.3-r3
4.0.3-r4
4.2.1-r0
4.2.1-r1
4.2.1-r2
4.2.1-r3
4.3.1-r0
4.3.1-r1
4.3.1-r2
4.3.1-r3
4.3.1-r4
4.4.0-r0
4.5.0-r0
4.5.1-r0
4.5.1-r1
4.6.0-r0
4.6.1-r0
4.6.1-r1
4.6.2-r0
4.7.0-r0
4.8.0-r0
4.8.0-r1
4.8.0-r2
4.8.0-r3

Debian:11 / screen

Package

Name
screen
Purl
pkg:deb/debian/screen?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.8.0-5

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / screen

Package

Name
screen
Purl
pkg:deb/debian/screen?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.8.0-5

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / screen

Package

Name
screen
Purl
pkg:deb/debian/screen?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.8.0-5

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Git / git.savannah.gnu.org/git/screen.git

Affected ranges

Type
GIT
Repo
https://git.savannah.gnu.org/git/screen.git
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
067c3ebca4e8160f82afa65672925323a4f27614

Affected versions

v.*

v.4.2.0
v.4.2.1
v.4.3.0
v.4.3.1
v.4.4.0
v.4.5.0
v.4.5.1
v.4.6.0
v.4.6.1
v.4.6.2
v.4.7.0
v.4.8.0