CVE-2021-36369

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Source

https://nvd.nist.gov/vuln/detail/CVE-2021-36369

Import Source

https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-36369.json

JSON Data

https://api.test.osv.dev/v1/vulns/CVE-2021-36369

Related

Published

2022-10-12T21:15:09Z

Modified

2024-10-12T07:52:58.734133Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator

Summary

[none]

Details

An issue was discovered in Dropbear through 2020.81. Due to a non-RFC-compliant check of the available authentication methods in the client-side SSH code, it is possible for an SSH server to change the login process in its favor. This attack can bypass additional security measures such as FIDO2 tokens or SSH-Askpass. Thus, it allows an attacker to abuse a forwarded agent for logging on to another server unnoticed.

References

Affected packages

Debian:11 / dropbear

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2020.81-3+deb11u1

Affected versions

2020.*

2020.81-3

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:12 / dropbear

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2022.82-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:13 / dropbear

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2022.82-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Git / github.com/mkj/dropbear

Affected ranges

Type: GIT
Repo: https://github.com/mkj/dropbear
Events: Introduced

0 Unknown introduced commit / All previous commits are affected

Last affected

d852d69b50187dd81d424846e7dc677ec57e2d4f

Affected versions

DROPBEAR_0.*

DROPBEAR_0.44

DROPBEAR_0.44test1

DROPBEAR_0.44test2

DROPBEAR_0.44test3

DROPBEAR_0.44test4

DROPBEAR_0.45

DROPBEAR_0.46

DROPBEAR_0.47

DROPBEAR_0.48

DROPBEAR_0.48.1

DROPBEAR_0.49

DROPBEAR_0.50

DROPBEAR_0.51

DROPBEAR_0.52

DROPBEAR_0.53

DROPBEAR_0.53.1

DROPBEAR_2011.*

DROPBEAR_2011.54

DROPBEAR_2012.*

DROPBEAR_2012.55

DROPBEAR_2013.*

DROPBEAR_2013.56

DROPBEAR_2013.57

DROPBEAR_2013.58

DROPBEAR_2013.59

DROPBEAR_2013.60

DROPBEAR_2013.61test

DROPBEAR_2013.62

DROPBEAR_2014.*

DROPBEAR_2014.63

DROPBEAR_2014.64

DROPBEAR_2014.65

DROPBEAR_2014.66

DROPBEAR_2015.*

DROPBEAR_2015.67

DROPBEAR_2015.68

DROPBEAR_2015.69

DROPBEAR_2015.70

DROPBEAR_2015.71

DROPBEAR_2016.*

DROPBEAR_2016.72

DROPBEAR_2016.73

DROPBEAR_2016.74

DROPBEAR_2017.*

DROPBEAR_2017.75

DROPBEAR_2018.*

DROPBEAR_2018.76

DROPBEAR_2019.*

DROPBEAR_2019.77

DROPBEAR_2019.78

DROPBEAR_2020.*

DROPBEAR_2020.79

DROPBEAR_2020.80

DROPBEAR_2020.81

libtomcrypt-1.*

libtomcrypt-1.05

libtomcrypt-1.16

libtommath-0.*

libtommath-0.35

libtommath-0.40