UBUNTU-CVE-2026-23741

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2026-23741
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-23741.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-23741
Upstream
Published
2026-02-06T17:16:00Z
Modified
2026-04-22T16:26:11.624879Z
Severity
  • 0.0 (None) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:N CVSS Calculator
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, the asterisk/contrib/scripts/astcoredumper runs as root, as noted by the NOTES tag on line 689 of the astcoredumper file. The script will source the contents of /etc/asterisk/astdebugtools.conf, which resides in a folder that is writeable by the asterisk user:group. Due to the /etc/asterisk/astdebugtools.conf file following bash semantics and it being loaded; an attacker with write permissions may add or modify the file such that when the root astcoredumper is run; it would source and thereby execute arbitrary bash code found in the /etc/asterisk/astdebug_tools.conf. This issue has been patched in versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2.

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_version": "1:13.18.3~dfsg-1ubuntu4",
            "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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-23741.json"
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_version": "1:16.2.1~dfsg-2ubuntu1",
            "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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-23741.json"
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_version": "1:18.10.0~dfsg+~cs6.10.40431411-2",
            "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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-23741.json"
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_version": "1:20.6.0~dfsg+~cs6.13.40431414-2build5",
            "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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-23741.json"
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_version": "1:22.5.2~dfsg+~cs6.15.60671435-1",
            "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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-23741.json"
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_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1",
            "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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-23741.json"