ALPINE-CVE-2021-36368

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Please try reporting it to the source first.
Source
https://security.alpinelinux.org/vuln/CVE-2021-36368
Import Source
https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-36368.json
JSON Data
https://api.osv.dev/v1/vulns/ALPINE-CVE-2021-36368
Upstream
Published
2022-03-13T00:15:07.937Z
Modified
2025-12-03T22:01:06.564586Z
Severity
  • 3.7 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Summary
[none]
Details

An issue was discovered in OpenSSH before 8.9. If a client is using public-key authentication with agent forwarding but without -oLogLevel=verbose, and an attacker has silently modified the server to support the None authentication option, then the user cannot determine whether FIDO authentication is going to confirm that the user wishes to connect to that server, or that the user wishes to allow that server to connect to a different server on the user's behalf. NOTE: the vendor's position is "this is not an authentication bypass, since nothing is being bypassed.

References

Affected packages

Alpine:v3.19 / openssh

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.9_p1-r0

Affected versions

5.*
5.1p1-r0
5.1_p1-r1
5.1_p1-r2
5.2_p1-r0
5.2_p1-r1
5.2_p1-r2
5.2_p1-r3
5.3_p1-r3
5.4_p1-r0
5.4_p1-r1
5.4_p1-r2
5.4_p1-r3
5.5_p1-r0
5.6_p1-r0
5.6_p1-r1
5.8_p1-r0
5.8_p1-r1
5.8_p1-r2
5.8_p2-r0
5.8_p2-r1
5.8_p2-r2
5.9_p1-r0
5.9_p1-r1
5.9_p1-r2
6.*
6.0_p1-r0
6.1_p1-r0
6.1_p1-r1
6.1_p1-r2
6.2_p1-r0
6.2_p2-r0
6.2_p2-r1
6.2_p2-r2
6.3_p1-r0
6.3_p1-r1
6.3_p1-r2
6.4_p1-r0
6.4_p1-r1
6.6_p1-r0
6.6_p1-r1
6.6_p1-r2
6.6_p1-r3
6.6_p1-r4
6.6_p1-r5
6.6_p1-r6
6.7_p1-r0
6.8_p1-r0
6.8_p1-r1
6.8_p1-r2
6.9_p1-r0
6.9_p1-r1
6.9_p1-r2
6.9_p1-r3
6.9_p1-r4
6.9_p1-r5
7.*
7.1_p1-r0
7.1_p1-r1
7.1_p2-r0
7.2_p1-r0
7.2_p2-r0
7.2_p2-r1
7.3_p1-r0
7.3_p1-r1
7.3_p1-r2
7.4_p1-r0
7.4_p1-r1
7.4_p1-r2
7.5_p1-r0
7.5_p1-r1
7.5_p1-r2
7.5_p1-r3
7.5_p1-r4
7.5_p1-r5
7.5_p1-r6
7.5_p1-r7
7.5_p1-r8
7.6_p1-r0
7.6_p1-r1
7.7_p1-r0
7.7_p1-r1
7.7_p1-r2
7.7_p1-r3
7.7_p1-r4
7.8_p1-r0
7.9_p1-r0
7.9_p1-r1
7.9_p1-r2
7.9_p1-r3
7.9_p1-r4
7.9_p1-r5
8.*
8.0_p1-r0
8.0_p1-r1
8.0_p1-r2
8.1_p1-r0
8.2_p1-r0
8.3_p1-r0
8.4_p1-r0
8.4_p1-r1
8.4_p1-r2
8.4_p1-r3
8.5_p1-r0
8.5_p1-r1
8.5_p1-r2
8.6_p1-r0
8.6_p1-r1
8.6_p1-r2
8.6_p1-r3
8.6_p1-r4
8.8_p1-r0
8.8_p1-r1
8.8_p1-r2
8.8_p1-r3
8.8_p1-r4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-36368.json"

Alpine:v3.20 / openssh

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.9_p1-r0

Affected versions

5.*
5.1p1-r0
5.1_p1-r1
5.1_p1-r2
5.2_p1-r0
5.2_p1-r1
5.2_p1-r2
5.2_p1-r3
5.3_p1-r3
5.4_p1-r0
5.4_p1-r1
5.4_p1-r2
5.4_p1-r3
5.5_p1-r0
5.6_p1-r0
5.6_p1-r1
5.8_p1-r0
5.8_p1-r1
5.8_p1-r2
5.8_p2-r0
5.8_p2-r1
5.8_p2-r2
5.9_p1-r0
5.9_p1-r1
5.9_p1-r2
6.*
6.0_p1-r0
6.1_p1-r0
6.1_p1-r1
6.1_p1-r2
6.2_p1-r0
6.2_p2-r0
6.2_p2-r1
6.2_p2-r2
6.3_p1-r0
6.3_p1-r1
6.3_p1-r2
6.4_p1-r0
6.4_p1-r1
6.6_p1-r0
6.6_p1-r1
6.6_p1-r2
6.6_p1-r3
6.6_p1-r4
6.6_p1-r5
6.6_p1-r6
6.7_p1-r0
6.8_p1-r0
6.8_p1-r1
6.8_p1-r2
6.9_p1-r0
6.9_p1-r1
6.9_p1-r2
6.9_p1-r3
6.9_p1-r4
6.9_p1-r5
7.*
7.1_p1-r0
7.1_p1-r1
7.1_p2-r0
7.2_p1-r0
7.2_p2-r0
7.2_p2-r1
7.3_p1-r0
7.3_p1-r1
7.3_p1-r2
7.4_p1-r0
7.4_p1-r1
7.4_p1-r2
7.5_p1-r0
7.5_p1-r1
7.5_p1-r2
7.5_p1-r3
7.5_p1-r4
7.5_p1-r5
7.5_p1-r6
7.5_p1-r7
7.5_p1-r8
7.6_p1-r0
7.6_p1-r1
7.7_p1-r0
7.7_p1-r1
7.7_p1-r2
7.7_p1-r3
7.7_p1-r4
7.8_p1-r0
7.9_p1-r0
7.9_p1-r1
7.9_p1-r2
7.9_p1-r3
7.9_p1-r4
7.9_p1-r5
8.*
8.0_p1-r0
8.0_p1-r1
8.0_p1-r2
8.1_p1-r0
8.2_p1-r0
8.3_p1-r0
8.4_p1-r0
8.4_p1-r1
8.4_p1-r2
8.4_p1-r3
8.5_p1-r0
8.5_p1-r1
8.5_p1-r2
8.6_p1-r0
8.6_p1-r1
8.6_p1-r2
8.6_p1-r3
8.6_p1-r4
8.8_p1-r0
8.8_p1-r1
8.8_p1-r2
8.8_p1-r3
8.8_p1-r4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-36368.json"

Alpine:v3.21 / openssh

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.9_p1-r0

Affected versions

5.*
5.1p1-r0
5.1_p1-r1
5.1_p1-r2
5.2_p1-r0
5.2_p1-r1
5.2_p1-r2
5.2_p1-r3
5.3_p1-r3
5.4_p1-r0
5.4_p1-r1
5.4_p1-r2
5.4_p1-r3
5.5_p1-r0
5.6_p1-r0
5.6_p1-r1
5.8_p1-r0
5.8_p1-r1
5.8_p1-r2
5.8_p2-r0
5.8_p2-r1
5.8_p2-r2
5.9_p1-r0
5.9_p1-r1
5.9_p1-r2
6.*
6.0_p1-r0
6.1_p1-r0
6.1_p1-r1
6.1_p1-r2
6.2_p1-r0
6.2_p2-r0
6.2_p2-r1
6.2_p2-r2
6.3_p1-r0
6.3_p1-r1
6.3_p1-r2
6.4_p1-r0
6.4_p1-r1
6.6_p1-r0
6.6_p1-r1
6.6_p1-r2
6.6_p1-r3
6.6_p1-r4
6.6_p1-r5
6.6_p1-r6
6.7_p1-r0
6.8_p1-r0
6.8_p1-r1
6.8_p1-r2
6.9_p1-r0
6.9_p1-r1
6.9_p1-r2
6.9_p1-r3
6.9_p1-r4
6.9_p1-r5
7.*
7.1_p1-r0
7.1_p1-r1
7.1_p2-r0
7.2_p1-r0
7.2_p2-r0
7.2_p2-r1
7.3_p1-r0
7.3_p1-r1
7.3_p1-r2
7.4_p1-r0
7.4_p1-r1
7.4_p1-r2
7.5_p1-r0
7.5_p1-r1
7.5_p1-r2
7.5_p1-r3
7.5_p1-r4
7.5_p1-r5
7.5_p1-r6
7.5_p1-r7
7.5_p1-r8
7.6_p1-r0
7.6_p1-r1
7.7_p1-r0
7.7_p1-r1
7.7_p1-r2
7.7_p1-r3
7.7_p1-r4
7.8_p1-r0
7.9_p1-r0
7.9_p1-r1
7.9_p1-r2
7.9_p1-r3
7.9_p1-r4
7.9_p1-r5
8.*
8.0_p1-r0
8.0_p1-r1
8.0_p1-r2
8.1_p1-r0
8.2_p1-r0
8.3_p1-r0
8.4_p1-r0
8.4_p1-r1
8.4_p1-r2
8.4_p1-r3
8.5_p1-r0
8.5_p1-r1
8.5_p1-r2
8.6_p1-r0
8.6_p1-r1
8.6_p1-r2
8.6_p1-r3
8.6_p1-r4
8.8_p1-r0
8.8_p1-r1
8.8_p1-r2
8.8_p1-r3
8.8_p1-r4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-36368.json"

Alpine:v3.22 / openssh

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.9_p1-r0

Affected versions

5.*
5.1p1-r0
5.1_p1-r1
5.1_p1-r2
5.2_p1-r0
5.2_p1-r1
5.2_p1-r2
5.2_p1-r3
5.3_p1-r3
5.4_p1-r0
5.4_p1-r1
5.4_p1-r2
5.4_p1-r3
5.5_p1-r0
5.6_p1-r0
5.6_p1-r1
5.8_p1-r0
5.8_p1-r1
5.8_p1-r2
5.8_p2-r0
5.8_p2-r1
5.8_p2-r2
5.9_p1-r0
5.9_p1-r1
5.9_p1-r2
6.*
6.0_p1-r0
6.1_p1-r0
6.1_p1-r1
6.1_p1-r2
6.2_p1-r0
6.2_p2-r0
6.2_p2-r1
6.2_p2-r2
6.3_p1-r0
6.3_p1-r1
6.3_p1-r2
6.4_p1-r0
6.4_p1-r1
6.6_p1-r0
6.6_p1-r1
6.6_p1-r2
6.6_p1-r3
6.6_p1-r4
6.6_p1-r5
6.6_p1-r6
6.7_p1-r0
6.8_p1-r0
6.8_p1-r1
6.8_p1-r2
6.9_p1-r0
6.9_p1-r1
6.9_p1-r2
6.9_p1-r3
6.9_p1-r4
6.9_p1-r5
7.*
7.1_p1-r0
7.1_p1-r1
7.1_p2-r0
7.2_p1-r0
7.2_p2-r0
7.2_p2-r1
7.3_p1-r0
7.3_p1-r1
7.3_p1-r2
7.4_p1-r0
7.4_p1-r1
7.4_p1-r2
7.5_p1-r0
7.5_p1-r1
7.5_p1-r2
7.5_p1-r3
7.5_p1-r4
7.5_p1-r5
7.5_p1-r6
7.5_p1-r7
7.5_p1-r8
7.6_p1-r0
7.6_p1-r1
7.7_p1-r0
7.7_p1-r1
7.7_p1-r2
7.7_p1-r3
7.7_p1-r4
7.8_p1-r0
7.9_p1-r0
7.9_p1-r1
7.9_p1-r2
7.9_p1-r3
7.9_p1-r4
7.9_p1-r5
8.*
8.0_p1-r0
8.0_p1-r1
8.0_p1-r2
8.1_p1-r0
8.2_p1-r0
8.3_p1-r0
8.4_p1-r0
8.4_p1-r1
8.4_p1-r2
8.4_p1-r3
8.5_p1-r0
8.5_p1-r1
8.5_p1-r2
8.6_p1-r0
8.6_p1-r1
8.6_p1-r2
8.6_p1-r3
8.6_p1-r4
8.8_p1-r0
8.8_p1-r1
8.8_p1-r2
8.8_p1-r3
8.8_p1-r4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-36368.json"

Alpine:v3.23 / openssh

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.9_p1-r0

Affected versions

5.*
5.1p1-r0
5.1_p1-r1
5.1_p1-r2
5.2_p1-r0
5.2_p1-r1
5.2_p1-r2
5.2_p1-r3
5.3_p1-r3
5.4_p1-r0
5.4_p1-r1
5.4_p1-r2
5.4_p1-r3
5.5_p1-r0
5.6_p1-r0
5.6_p1-r1
5.8_p1-r0
5.8_p1-r1
5.8_p1-r2
5.8_p2-r0
5.8_p2-r1
5.8_p2-r2
5.9_p1-r0
5.9_p1-r1
5.9_p1-r2
6.*
6.0_p1-r0
6.1_p1-r0
6.1_p1-r1
6.1_p1-r2
6.2_p1-r0
6.2_p2-r0
6.2_p2-r1
6.2_p2-r2
6.3_p1-r0
6.3_p1-r1
6.3_p1-r2
6.4_p1-r0
6.4_p1-r1
6.6_p1-r0
6.6_p1-r1
6.6_p1-r2
6.6_p1-r3
6.6_p1-r4
6.6_p1-r5
6.6_p1-r6
6.7_p1-r0
6.8_p1-r0
6.8_p1-r1
6.8_p1-r2
6.9_p1-r0
6.9_p1-r1
6.9_p1-r2
6.9_p1-r3
6.9_p1-r4
6.9_p1-r5
7.*
7.1_p1-r0
7.1_p1-r1
7.1_p2-r0
7.2_p1-r0
7.2_p2-r0
7.2_p2-r1
7.3_p1-r0
7.3_p1-r1
7.3_p1-r2
7.4_p1-r0
7.4_p1-r1
7.4_p1-r2
7.5_p1-r0
7.5_p1-r1
7.5_p1-r2
7.5_p1-r3
7.5_p1-r4
7.5_p1-r5
7.5_p1-r6
7.5_p1-r7
7.5_p1-r8
7.6_p1-r0
7.6_p1-r1
7.7_p1-r0
7.7_p1-r1
7.7_p1-r2
7.7_p1-r3
7.7_p1-r4
7.8_p1-r0
7.9_p1-r0
7.9_p1-r1
7.9_p1-r2
7.9_p1-r3
7.9_p1-r4
7.9_p1-r5
8.*
8.0_p1-r0
8.0_p1-r1
8.0_p1-r2
8.1_p1-r0
8.2_p1-r0
8.3_p1-r0
8.4_p1-r0
8.4_p1-r1
8.4_p1-r2
8.4_p1-r3
8.5_p1-r0
8.5_p1-r1
8.5_p1-r2
8.6_p1-r0
8.6_p1-r1
8.6_p1-r2
8.6_p1-r3
8.6_p1-r4
8.8_p1-r0
8.8_p1-r1
8.8_p1-r2
8.8_p1-r3
8.8_p1-r4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-36368.json"