DEBIAN-CVE-2021-3618

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Source

https://security-tracker.debian.org/tracker/CVE-2021-3618

Import Source

https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-3618.json

JSON Data

https://api.osv.dev/v1/vulns/DEBIAN-CVE-2021-3618

Upstream

CVE-2021-3618

Published

2022-03-23T20:15:09Z

Modified

2025-09-30T05:15:11.154543Z

Severity

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

Summary

[none]

Details

ALPACA is an application layer protocol content confusion attack, exploiting TLS servers implementing different protocols but using compatible certificates, such as multi-domain or wildcard certificates. A MiTM attacker having access to victim's traffic at the TCP/IP layer can redirect traffic from one subdomain to another, resulting in a valid TLS session. This breaks the authentication of TLS and cross-protocol attacks may be possible where the behavior of one protocol service may compromise the other at the application layer.

References

https://security-tracker.debian.org/tracker/CVE-2021-3618

Affected packages

Debian:11

nginx

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.18.0-6.1+deb11u2

Affected versions

1.*

1.18.0-6.1

1.18.0-6.1+deb11u1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

sendmail

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

8.*

8.15.2-22

8.15.2-22+deb11u1

8.15.2-22+deb11u2

8.15.2-22+deb11u3

8.15.2-23

8.16.1-1

8.16.1-2

8.16.1-3

8.17.1-1

8.17.1-2

8.17.1.9-1

8.17.1.9-2

8.17.2-1~bpo12+1

8.17.2-1

8.18.0.2-1

8.18.1-1

8.18.1-2

8.18.1-3

8.18.1-4

8.18.1-5

8.18.1-6~bpo12+1

8.18.1-6

8.18.1-7

Ecosystem specific

{
    "urgency": "not yet assigned"
}

vsftpd

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.0.3-12

3.0.3-13

3.0.3-13.1

3.0.5-0.1

3.0.5-0.2

3.0.5-0.3

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:12

nginx

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.20.2-2

Ecosystem specific

{
    "urgency": "not yet assigned"
}

sendmail

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

8.16.1-2

Ecosystem specific

{
    "urgency": "not yet assigned"
}

vsftpd

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.0.3-13

3.0.3-13.1

3.0.5-0.1

3.0.5-0.2

3.0.5-0.3

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:13

nginx

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.20.2-2

Ecosystem specific

{
    "urgency": "not yet assigned"
}

sendmail

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

8.16.1-2

Ecosystem specific

{
    "urgency": "not yet assigned"
}

vsftpd

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

3.0.5-0.1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:14

nginx

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.20.2-2

Ecosystem specific

{
    "urgency": "not yet assigned"
}

sendmail

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

8.16.1-2

Ecosystem specific

{
    "urgency": "not yet assigned"
}

vsftpd

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

3.0.5-0.1

Ecosystem specific

{
    "urgency": "not yet assigned"
}