UBUNTU-CVE-2026-57191

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Source
https://ubuntu.com/security/CVE-2026-57191
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57191.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-57191
Upstream
Published
2026-10-27T22:17:00Z
Modified
2026-10-28T20:17:22Z
Severity
  • 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, an unbounded sscanf in res_pjsip_pubsub when parsing the MWI NOTIFY Message-Account field may allow an unauthenticated attacker to send a carefully crafted packet that causes a stack buffer overflow and corrupts the underlying transport, permanently disabling all SIP functionality. An Asterisk restart is required to restore full operation. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.

References

Affected packages

Ubuntu:18.04:LTS
asterisk

Package

Name
asterisk
Purl
pkg:deb/ubuntu/asterisk?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown 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-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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57191.json"
Ubuntu:20.04:LTS
asterisk

Package

Name
asterisk
Purl
pkg:deb/ubuntu/asterisk?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown 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-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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57191.json"
Ubuntu:22.04:LTS
asterisk

Package

Name
asterisk
Purl
pkg:deb/ubuntu/asterisk?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown 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-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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57191.json"
Ubuntu:24.04:LTS
asterisk

Package

Name
asterisk
Purl
pkg:deb/ubuntu/asterisk?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown 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-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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57191.json"
Ubuntu:26.04:LTS
asterisk

Package

Name
asterisk
Purl
pkg:deb/ubuntu/asterisk?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:22.*
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-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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57191.json"
Ubuntu:26.10
asterisk

Package

Name
asterisk
Purl
pkg:deb/ubuntu/asterisk?arch=source&distro=stonking

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:22.*
1:22.5.2~dfsg+~cs6.15.60671435-1
1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu2
1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "asterisk",
            "binary_version":  "1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu3"
        },
        {
            "binary_name":  "asterisk-config",
            "binary_version":  "1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu3"
        },
        {
            "binary_name":  "asterisk-dahdi",
            "binary_version":  "1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu3"
        },
        {
            "binary_name":  "asterisk-mobile",
            "binary_version":  "1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu3"
        },
        {
            "binary_name":  "asterisk-modules",
            "binary_version":  "1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu3"
        },
        {
            "binary_name":  "asterisk-mp3",
            "binary_version":  "1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu3"
        },
        {
            "binary_name":  "asterisk-mysql",
            "binary_version":  "1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu3"
        },
        {
            "binary_name":  "asterisk-ooh323",
            "binary_version":  "1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu3"
        },
        {
            "binary_name":  "asterisk-tests",
            "binary_version":  "1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57191.json"
Ubuntu:Pro:16.04:LTS
asterisk

Package

Name
asterisk
Purl
pkg:deb/ubuntu/asterisk?arch=source&distro=esm-apps%2Fxenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown 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-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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57191.json"