UBUNTU-CVE-2023-49786

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Source

https://ubuntu.com/security/CVE-2023-49786

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-49786.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2023-49786

Upstream

CVE-2023-49786

Published

2023-12-14T20:15:00Z

Modified

2025-10-24T05:02:22Z

Severity

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

Summary

[none]

Details

Asterisk is an open source private branch exchange and telephony toolkit. In Asterisk prior to versions 18.20.1, 20.5.1, and 21.0.1; as well as certified-asterisk prior to 18.9-cert6; Asterisk is susceptible to a DoS due to a race condition in the hello handshake phase of the DTLS protocol when handling DTLS-SRTP for media setup. This attack can be done continuously, thus denying new DTLS-SRTP encrypted calls during the attack. Abuse of this vulnerability may lead to a massive Denial of Service on vulnerable Asterisk servers for calls that rely on DTLS-SRTP. Commit d7d7764cb07c8a1872804321302ef93bf62cba05 contains a fix, which is part of versions 18.20.1, 20.5.1, 21.0.1, amd 18.9-cert6.

References

Affected packages

Ubuntu:18.04:LTS

asterisk

Package

Name: asterisk
Purl: pkg:deb/ubuntu/asterisk@1:13.18.3~dfsg-1ubuntu4?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:13.*

1:13.17.2~dfsg-1ubuntu1

1:13.17.2~dfsg-2ubuntu1

1:13.18.1~dfsg-1ubuntu1

1:13.18.3~dfsg-1ubuntu1

1:13.18.3~dfsg-1ubuntu2

1:13.18.3~dfsg-1ubuntu3

1:13.18.3~dfsg-1ubuntu4

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "asterisk",
            "binary_version": "1:13.18.3~dfsg-1ubuntu4"
        },
        {
            "binary_name": "asterisk-config",
            "binary_version": "1:13.18.3~dfsg-1ubuntu4"
        },
        {
            "binary_name": "asterisk-dahdi",
            "binary_version": "1:13.18.3~dfsg-1ubuntu4"
        },
        {
            "binary_name": "asterisk-dev",
            "binary_version": "1:13.18.3~dfsg-1ubuntu4"
        },
        {
            "binary_name": "asterisk-mobile",
            "binary_version": "1:13.18.3~dfsg-1ubuntu4"
        },
        {
            "binary_name": "asterisk-modules",
            "binary_version": "1:13.18.3~dfsg-1ubuntu4"
        },
        {
            "binary_name": "asterisk-mp3",
            "binary_version": "1:13.18.3~dfsg-1ubuntu4"
        },
        {
            "binary_name": "asterisk-mysql",
            "binary_version": "1:13.18.3~dfsg-1ubuntu4"
        },
        {
            "binary_name": "asterisk-ooh323",
            "binary_version": "1:13.18.3~dfsg-1ubuntu4"
        },
        {
            "binary_name": "asterisk-tests",
            "binary_version": "1:13.18.3~dfsg-1ubuntu4"
        },
        {
            "binary_name": "asterisk-voicemail",
            "binary_version": "1:13.18.3~dfsg-1ubuntu4"
        },
        {
            "binary_name": "asterisk-voicemail-imapstorage",
            "binary_version": "1:13.18.3~dfsg-1ubuntu4"
        },
        {
            "binary_name": "asterisk-voicemail-odbcstorage",
            "binary_version": "1:13.18.3~dfsg-1ubuntu4"
        },
        {
            "binary_name": "asterisk-vpb",
            "binary_version": "1:13.18.3~dfsg-1ubuntu4"
        }
    ]
}

Ubuntu:20.04:LTS

asterisk

Package

Name: asterisk
Purl: pkg:deb/ubuntu/asterisk@1:16.2.1~dfsg-2ubuntu1?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:16.*

1:16.2.1~dfsg-2build2

1:16.2.1~dfsg-2build3

1:16.2.1~dfsg-2ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "asterisk",
            "binary_version": "1:16.2.1~dfsg-2ubuntu1"
        },
        {
            "binary_name": "asterisk-config",
            "binary_version": "1:16.2.1~dfsg-2ubuntu1"
        },
        {
            "binary_name": "asterisk-dahdi",
            "binary_version": "1:16.2.1~dfsg-2ubuntu1"
        },
        {
            "binary_name": "asterisk-dev",
            "binary_version": "1:16.2.1~dfsg-2ubuntu1"
        },
        {
            "binary_name": "asterisk-mobile",
            "binary_version": "1:16.2.1~dfsg-2ubuntu1"
        },
        {
            "binary_name": "asterisk-modules",
            "binary_version": "1:16.2.1~dfsg-2ubuntu1"
        },
        {
            "binary_name": "asterisk-mp3",
            "binary_version": "1:16.2.1~dfsg-2ubuntu1"
        },
        {
            "binary_name": "asterisk-mysql",
            "binary_version": "1:16.2.1~dfsg-2ubuntu1"
        },
        {
            "binary_name": "asterisk-ooh323",
            "binary_version": "1:16.2.1~dfsg-2ubuntu1"
        },
        {
            "binary_name": "asterisk-tests",
            "binary_version": "1:16.2.1~dfsg-2ubuntu1"
        },
        {
            "binary_name": "asterisk-voicemail",
            "binary_version": "1:16.2.1~dfsg-2ubuntu1"
        },
        {
            "binary_name": "asterisk-voicemail-imapstorage",
            "binary_version": "1:16.2.1~dfsg-2ubuntu1"
        },
        {
            "binary_name": "asterisk-voicemail-odbcstorage",
            "binary_version": "1:16.2.1~dfsg-2ubuntu1"
        },
        {
            "binary_name": "asterisk-vpb",
            "binary_version": "1:16.2.1~dfsg-2ubuntu1"
        }
    ]
}

Ubuntu:22.04:LTS

asterisk

Package

Name: asterisk
Purl: pkg:deb/ubuntu/asterisk@1:18.10.0~dfsg+~cs6.10.40431411-2?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:16.*

1:16.16.1~dfsg-2

1:16.16.1~dfsg-4

1:16.16.1~dfsg-4build1

1:16.16.1~dfsg+~2.10-1

1:18.*

1:18.10.0~dfsg+~cs6.10.40431411-2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "asterisk",
            "binary_version": "1:18.10.0~dfsg+~cs6.10.40431411-2"
        },
        {
            "binary_name": "asterisk-config",
            "binary_version": "1:18.10.0~dfsg+~cs6.10.40431411-2"
        },
        {
            "binary_name": "asterisk-dahdi",
            "binary_version": "1:18.10.0~dfsg+~cs6.10.40431411-2"
        },
        {
            "binary_name": "asterisk-dev",
            "binary_version": "1:18.10.0~dfsg+~cs6.10.40431411-2"
        },
        {
            "binary_name": "asterisk-mobile",
            "binary_version": "1:18.10.0~dfsg+~cs6.10.40431411-2"
        },
        {
            "binary_name": "asterisk-modules",
            "binary_version": "1:18.10.0~dfsg+~cs6.10.40431411-2"
        },
        {
            "binary_name": "asterisk-mp3",
            "binary_version": "1:18.10.0~dfsg+~cs6.10.40431411-2"
        },
        {
            "binary_name": "asterisk-mysql",
            "binary_version": "1:18.10.0~dfsg+~cs6.10.40431411-2"
        },
        {
            "binary_name": "asterisk-ooh323",
            "binary_version": "1:18.10.0~dfsg+~cs6.10.40431411-2"
        },
        {
            "binary_name": "asterisk-tests",
            "binary_version": "1:18.10.0~dfsg+~cs6.10.40431411-2"
        },
        {
            "binary_name": "asterisk-vpb",
            "binary_version": "1:18.10.0~dfsg+~cs6.10.40431411-2"
        }
    ]
}

Ubuntu:24.04:LTS

asterisk

Package

Name: asterisk
Purl: pkg:deb/ubuntu/asterisk@1:20.6.0~dfsg+~cs6.13.40431414-2build5?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:20.*

1:20.4.0~dfsg+~cs6.13.40431414-2

1:20.5.0~dfsg+~cs6.13.40431414-1

1:20.5.1~dfsg+~cs6.13.40431414-1

1:20.5.2~dfsg+~cs6.13.40431414-1

1:20.6.0~dfsg+~cs6.13.40431414-1

1:20.6.0~dfsg+~cs6.13.40431414-2

1:20.6.0~dfsg+~cs6.13.40431414-2build3

1:20.6.0~dfsg+~cs6.13.40431414-2build4

1:20.6.0~dfsg+~cs6.13.40431414-2build5

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "asterisk",
            "binary_version": "1:20.6.0~dfsg+~cs6.13.40431414-2build5"
        },
        {
            "binary_name": "asterisk-config",
            "binary_version": "1:20.6.0~dfsg+~cs6.13.40431414-2build5"
        },
        {
            "binary_name": "asterisk-dahdi",
            "binary_version": "1:20.6.0~dfsg+~cs6.13.40431414-2build5"
        },
        {
            "binary_name": "asterisk-dev",
            "binary_version": "1:20.6.0~dfsg+~cs6.13.40431414-2build5"
        },
        {
            "binary_name": "asterisk-mobile",
            "binary_version": "1:20.6.0~dfsg+~cs6.13.40431414-2build5"
        },
        {
            "binary_name": "asterisk-modules",
            "binary_version": "1:20.6.0~dfsg+~cs6.13.40431414-2build5"
        },
        {
            "binary_name": "asterisk-mp3",
            "binary_version": "1:20.6.0~dfsg+~cs6.13.40431414-2build5"
        },
        {
            "binary_name": "asterisk-mysql",
            "binary_version": "1:20.6.0~dfsg+~cs6.13.40431414-2build5"
        },
        {
            "binary_name": "asterisk-ooh323",
            "binary_version": "1:20.6.0~dfsg+~cs6.13.40431414-2build5"
        },
        {
            "binary_name": "asterisk-tests",
            "binary_version": "1:20.6.0~dfsg+~cs6.13.40431414-2build5"
        }
    ]
}

Ubuntu:25.04

asterisk

Package

Name: asterisk
Purl: pkg:deb/ubuntu/asterisk@1:22.2.0~dfsg+~cs6.15.60671435-2?arch=source&distro=plucky

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:20.*

1:20.8.1~dfsg+~cs6.14.40431414-1

1:22.*

1:22.0.0~dfsg+~cs6.14.60671435-1

1:22.1.0~dfsg+~cs6.14.60671435-1

1:22.1.1~dfsg+~cs6.14.60671435-1

1:22.2.0~dfsg+~cs6.15.60671435-1

1:22.2.0~dfsg+~cs6.15.60671435-2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "asterisk",
            "binary_version": "1:22.2.0~dfsg+~cs6.15.60671435-2"
        },
        {
            "binary_name": "asterisk-config",
            "binary_version": "1:22.2.0~dfsg+~cs6.15.60671435-2"
        },
        {
            "binary_name": "asterisk-dahdi",
            "binary_version": "1:22.2.0~dfsg+~cs6.15.60671435-2"
        },
        {
            "binary_name": "asterisk-dev",
            "binary_version": "1:22.2.0~dfsg+~cs6.15.60671435-2"
        },
        {
            "binary_name": "asterisk-mobile",
            "binary_version": "1:22.2.0~dfsg+~cs6.15.60671435-2"
        },
        {
            "binary_name": "asterisk-modules",
            "binary_version": "1:22.2.0~dfsg+~cs6.15.60671435-2"
        },
        {
            "binary_name": "asterisk-mp3",
            "binary_version": "1:22.2.0~dfsg+~cs6.15.60671435-2"
        },
        {
            "binary_name": "asterisk-mysql",
            "binary_version": "1:22.2.0~dfsg+~cs6.15.60671435-2"
        },
        {
            "binary_name": "asterisk-ooh323",
            "binary_version": "1:22.2.0~dfsg+~cs6.15.60671435-2"
        },
        {
            "binary_name": "asterisk-tests",
            "binary_version": "1:22.2.0~dfsg+~cs6.15.60671435-2"
        }
    ]
}

Ubuntu:25.10

asterisk

Package

Name: asterisk
Purl: pkg:deb/ubuntu/asterisk@1:22.5.2~dfsg+~cs6.15.60671435-1?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:22.*

1:22.2.0~dfsg+~cs6.15.60671435-2

1:22.3.0~dfsg+~cs6.15.60671435-1

1:22.4.1~dfsg+~cs6.15.60671435-1

1:22.4.1~dfsg+~cs6.15.60671435-2

1:22.5.1~dfsg+~cs6.15.60671435-1

1:22.5.2~dfsg+~cs6.15.60671435-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "asterisk",
            "binary_version": "1:22.5.2~dfsg+~cs6.15.60671435-1"
        },
        {
            "binary_name": "asterisk-config",
            "binary_version": "1:22.5.2~dfsg+~cs6.15.60671435-1"
        },
        {
            "binary_name": "asterisk-dahdi",
            "binary_version": "1:22.5.2~dfsg+~cs6.15.60671435-1"
        },
        {
            "binary_name": "asterisk-dev",
            "binary_version": "1:22.5.2~dfsg+~cs6.15.60671435-1"
        },
        {
            "binary_name": "asterisk-mobile",
            "binary_version": "1:22.5.2~dfsg+~cs6.15.60671435-1"
        },
        {
            "binary_name": "asterisk-modules",
            "binary_version": "1:22.5.2~dfsg+~cs6.15.60671435-1"
        },
        {
            "binary_name": "asterisk-mp3",
            "binary_version": "1:22.5.2~dfsg+~cs6.15.60671435-1"
        },
        {
            "binary_name": "asterisk-mysql",
            "binary_version": "1:22.5.2~dfsg+~cs6.15.60671435-1"
        },
        {
            "binary_name": "asterisk-ooh323",
            "binary_version": "1:22.5.2~dfsg+~cs6.15.60671435-1"
        },
        {
            "binary_name": "asterisk-tests",
            "binary_version": "1:22.5.2~dfsg+~cs6.15.60671435-1"
        }
    ]
}

Ubuntu:Pro:16.04:LTS

asterisk

Package

Name: asterisk
Purl: pkg:deb/ubuntu/asterisk@1:13.1.0~dfsg-1.1ubuntu4.1+esm1?arch=source&distro=esm-apps/xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:13.*

1:13.1.0~dfsg-1.1ubuntu3

1:13.1.0~dfsg-1.1ubuntu4

1:13.1.0~dfsg-1.1ubuntu4.1

1:13.1.0~dfsg-1.1ubuntu4.1+esm1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "asterisk",
            "binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
        },
        {
            "binary_name": "asterisk-config",
            "binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
        },
        {
            "binary_name": "asterisk-dahdi",
            "binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
        },
        {
            "binary_name": "asterisk-dev",
            "binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
        },
        {
            "binary_name": "asterisk-mobile",
            "binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
        },
        {
            "binary_name": "asterisk-modules",
            "binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
        },
        {
            "binary_name": "asterisk-mp3",
            "binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
        },
        {
            "binary_name": "asterisk-mysql",
            "binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
        },
        {
            "binary_name": "asterisk-ooh323",
            "binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
        },
        {
            "binary_name": "asterisk-voicemail",
            "binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
        },
        {
            "binary_name": "asterisk-voicemail-imapstorage",
            "binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
        },
        {
            "binary_name": "asterisk-voicemail-odbcstorage",
            "binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
        },
        {
            "binary_name": "asterisk-vpb",
            "binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
        }
    ]
}