UBUNTU-CVE-2021-3738

See a problem?
Please try reporting it to the source first.

Source

https://ubuntu.com/security/CVE-2021-3738

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-3738.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-3738

Related

Published

2021-11-09T00:00:00Z

Modified

2021-11-09T00:00:00Z

Severity

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

Summary

[none]

Details

In DCE/RPC it is possible to share the handles (cookies for resource state) between multiple connections via a mechanism called 'association groups'. These handles can reference connections to our sam.ldb database. However while the database was correctly shared, the user credentials state was only pointed at, and when one connection within that association group ended, the database would be left pointing at an invalid 'struct session_info'. The most likely outcome here is a crash, but it is possible that the use-after-free could instead allow different user state to be pointed at and this might allow more privileged access.

References

Affected packages

Ubuntu:Pro:14.04:LTS / samba

Package

Name: samba
Purl: pkg:deb/ubuntu/samba?arch=src?distro=trusty/esm

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2:3.*

2:3.6.18-1ubuntu3

2:4.*

2:4.0.10+dfsg-4ubuntu2

2:4.0.13+dfsg-1ubuntu1

2:4.1.3+dfsg-2ubuntu2

2:4.1.3+dfsg-2ubuntu3

2:4.1.3+dfsg-2ubuntu4

2:4.1.3+dfsg-2ubuntu5

2:4.1.6+dfsg-1ubuntu1

2:4.1.6+dfsg-1ubuntu2

2:4.1.6+dfsg-1ubuntu2.14.04.1

2:4.1.6+dfsg-1ubuntu2.14.04.2

2:4.1.6+dfsg-1ubuntu2.14.04.3

2:4.1.6+dfsg-1ubuntu2.14.04.4

2:4.1.6+dfsg-1ubuntu2.14.04.5

2:4.1.6+dfsg-1ubuntu2.14.04.7

2:4.1.6+dfsg-1ubuntu2.14.04.8

2:4.1.6+dfsg-1ubuntu2.14.04.9

2:4.1.6+dfsg-1ubuntu2.14.04.11

2:4.1.6+dfsg-1ubuntu2.14.04.12

2:4.1.6+dfsg-1ubuntu2.14.04.13

2:4.3.8+dfsg-0ubuntu0.14.04.2

2:4.3.9+dfsg-0ubuntu0.14.04.1

2:4.3.9+dfsg-0ubuntu0.14.04.3

2:4.3.11+dfsg-0ubuntu0.14.04.1

2:4.3.11+dfsg-0ubuntu0.14.04.2

2:4.3.11+dfsg-0ubuntu0.14.04.3

2:4.3.11+dfsg-0ubuntu0.14.04.4

2:4.3.11+dfsg-0ubuntu0.14.04.6

2:4.3.11+dfsg-0ubuntu0.14.04.7

2:4.3.11+dfsg-0ubuntu0.14.04.8

2:4.3.11+dfsg-0ubuntu0.14.04.9

2:4.3.11+dfsg-0ubuntu0.14.04.10

2:4.3.11+dfsg-0ubuntu0.14.04.11

2:4.3.11+dfsg-0ubuntu0.14.04.12

2:4.3.11+dfsg-0ubuntu0.14.04.13

2:4.3.11+dfsg-0ubuntu0.14.04.14

2:4.3.11+dfsg-0ubuntu0.14.04.16

2:4.3.11+dfsg-0ubuntu0.14.04.17

2:4.3.11+dfsg-0ubuntu0.14.04.19

2:4.3.11+dfsg-0ubuntu0.14.04.20

2:4.3.11+dfsg-0ubuntu0.14.04.20+esm2

2:4.3.11+dfsg-0ubuntu0.14.04.20+esm3

2:4.3.11+dfsg-0ubuntu0.14.04.20+esm4

2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6

2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7

2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8

2:4.3.11+dfsg-0ubuntu0.14.04.20+esm9

2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11

2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12

Ecosystem specific

{
    "ubuntu_priority": "medium"
}

Ubuntu:Pro:16.04:LTS / samba

Package

Name: samba
Purl: pkg:deb/ubuntu/samba?arch=src?distro=esm-infra/xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2:4.*

2:4.1.17+dfsg-4ubuntu2

2:4.1.20+dfsg-1ubuntu1

2:4.1.20+dfsg-1ubuntu2

2:4.1.20+dfsg-1ubuntu3

2:4.1.20+dfsg-1ubuntu5

2:4.3.3+dfsg-1ubuntu1

2:4.3.3+dfsg-1ubuntu2

2:4.3.3+dfsg-1ubuntu3

2:4.3.6+dfsg-1ubuntu1

2:4.3.8+dfsg-0ubuntu1

2:4.3.9+dfsg-0ubuntu0.16.04.1

2:4.3.9+dfsg-0ubuntu0.16.04.2

2:4.3.9+dfsg-0ubuntu0.16.04.3

2:4.3.11+dfsg-0ubuntu0.16.04.1

2:4.3.11+dfsg-0ubuntu0.16.04.3

2:4.3.11+dfsg-0ubuntu0.16.04.5

2:4.3.11+dfsg-0ubuntu0.16.04.6

2:4.3.11+dfsg-0ubuntu0.16.04.7

2:4.3.11+dfsg-0ubuntu0.16.04.8

2:4.3.11+dfsg-0ubuntu0.16.04.9

2:4.3.11+dfsg-0ubuntu0.16.04.10

2:4.3.11+dfsg-0ubuntu0.16.04.11

2:4.3.11+dfsg-0ubuntu0.16.04.12

2:4.3.11+dfsg-0ubuntu0.16.04.13

2:4.3.11+dfsg-0ubuntu0.16.04.15

2:4.3.11+dfsg-0ubuntu0.16.04.16

2:4.3.11+dfsg-0ubuntu0.16.04.17

2:4.3.11+dfsg-0ubuntu0.16.04.18

2:4.3.11+dfsg-0ubuntu0.16.04.19

2:4.3.11+dfsg-0ubuntu0.16.04.20

2:4.3.11+dfsg-0ubuntu0.16.04.21

2:4.3.11+dfsg-0ubuntu0.16.04.23

2:4.3.11+dfsg-0ubuntu0.16.04.24

2:4.3.11+dfsg-0ubuntu0.16.04.25

2:4.3.11+dfsg-0ubuntu0.16.04.26

2:4.3.11+dfsg-0ubuntu0.16.04.27

2:4.3.11+dfsg-0ubuntu0.16.04.28

2:4.3.11+dfsg-0ubuntu0.16.04.29

2:4.3.11+dfsg-0ubuntu0.16.04.30

2:4.3.11+dfsg-0ubuntu0.16.04.31

2:4.3.11+dfsg-0ubuntu0.16.04.32

2:4.3.11+dfsg-0ubuntu0.16.04.34

2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1

Ecosystem specific

{
    "ubuntu_priority": "medium"
}

Ubuntu:Pro:18.04:LTS / samba

Package

Name: samba
Purl: pkg:deb/ubuntu/samba?arch=src?distro=esm-infra/bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2:4.*

2:4.6.7+dfsg-1ubuntu3

2:4.7.1+dfsg-1ubuntu1

2:4.7.3+dfsg-1ubuntu1

2:4.7.4+dfsg-1ubuntu1

2:4.7.6+dfsg~ubuntu-0ubuntu1

2:4.7.6+dfsg~ubuntu-0ubuntu2

2:4.7.6+dfsg~ubuntu-0ubuntu2.2

2:4.7.6+dfsg~ubuntu-0ubuntu2.4

2:4.7.6+dfsg~ubuntu-0ubuntu2.5

2:4.7.6+dfsg~ubuntu-0ubuntu2.6

2:4.7.6+dfsg~ubuntu-0ubuntu2.7

2:4.7.6+dfsg~ubuntu-0ubuntu2.9

2:4.7.6+dfsg~ubuntu-0ubuntu2.10

2:4.7.6+dfsg~ubuntu-0ubuntu2.11

2:4.7.6+dfsg~ubuntu-0ubuntu2.13

2:4.7.6+dfsg~ubuntu-0ubuntu2.14

2:4.7.6+dfsg~ubuntu-0ubuntu2.15

2:4.7.6+dfsg~ubuntu-0ubuntu2.16

2:4.7.6+dfsg~ubuntu-0ubuntu2.17

2:4.7.6+dfsg~ubuntu-0ubuntu2.18

2:4.7.6+dfsg~ubuntu-0ubuntu2.19

2:4.7.6+dfsg~ubuntu-0ubuntu2.20

2:4.7.6+dfsg~ubuntu-0ubuntu2.21

2:4.7.6+dfsg~ubuntu-0ubuntu2.23

2:4.7.6+dfsg~ubuntu-0ubuntu2.24

2:4.7.6+dfsg~ubuntu-0ubuntu2.26

2:4.7.6+dfsg~ubuntu-0ubuntu2.27

2:4.7.6+dfsg~ubuntu-0ubuntu2.28

2:4.7.6+dfsg~ubuntu-0ubuntu2.29

Ecosystem specific

{
    "ubuntu_priority": "medium"
}

Ubuntu:20.04:LTS / samba

Package

Name: samba
Purl: pkg:deb/ubuntu/samba?arch=src?distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2:4.13.14+dfsg-0ubuntu0.20.04.1

Affected versions

2:4.*

2:4.10.7+dfsg-0ubuntu2

2:4.10.7+dfsg-0ubuntu3

2:4.11.1+dfsg-3ubuntu1

2:4.11.1+dfsg-3ubuntu2

2:4.11.1+dfsg-3ubuntu4

2:4.11.5+dfsg-1ubuntu1

2:4.11.5+dfsg-1ubuntu2

2:4.11.6+dfsg-0ubuntu1

2:4.11.6+dfsg-0ubuntu1.1

2:4.11.6+dfsg-0ubuntu1.2

2:4.11.6+dfsg-0ubuntu1.3

2:4.11.6+dfsg-0ubuntu1.4

2:4.11.6+dfsg-0ubuntu1.5

2:4.11.6+dfsg-0ubuntu1.6

2:4.11.6+dfsg-0ubuntu1.8

2:4.11.6+dfsg-0ubuntu1.9

2:4.11.6+dfsg-0ubuntu1.10

Ecosystem specific

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "ctdb"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "ctdb-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "libnss-winbind"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "libnss-winbind-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "libpam-winbind"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "libpam-winbind-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "libsmbclient"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "libsmbclient-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "libsmbclient-dev"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "libwbclient-dev"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "libwbclient0"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "libwbclient0-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "python3-samba"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "python3-samba-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "registry-tools"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "registry-tools-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "samba"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "samba-common"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "samba-common-bin"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "samba-common-bin-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "samba-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "samba-dev"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "samba-dsdb-modules"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "samba-dsdb-modules-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "samba-libs"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "samba-libs-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "samba-testsuite"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "samba-testsuite-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "samba-vfs-modules"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "samba-vfs-modules-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "smbclient"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "smbclient-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "winbind"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1",
            "binary_name": "winbind-dbgsym"
        }
    ]
}

Ubuntu:22.04:LTS / samba

Package

Name: samba
Purl: pkg:deb/ubuntu/samba?arch=src?distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2:4.13.14+dfsg-0ubuntu1

Affected versions

2:4.*

2:4.13.5+dfsg-2ubuntu2

2:4.13.5+dfsg-2ubuntu3

Ecosystem specific

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "ctdb"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "ctdb-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "libnss-winbind"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "libnss-winbind-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "libpam-winbind"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "libpam-winbind-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "libsmbclient"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "libsmbclient-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "libsmbclient-dev"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "libwbclient-dev"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "libwbclient0"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "libwbclient0-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "python3-samba"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "python3-samba-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "registry-tools"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "registry-tools-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "samba"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "samba-common"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "samba-common-bin"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "samba-common-bin-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "samba-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "samba-dev"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "samba-dsdb-modules"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "samba-dsdb-modules-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "samba-libs"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "samba-libs-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "samba-testsuite"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "samba-testsuite-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "samba-vfs-modules"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "samba-vfs-modules-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "smbclient"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "smbclient-dbgsym"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "winbind"
        },
        {
            "binary_version": "2:4.13.14+dfsg-0ubuntu1",
            "binary_name": "winbind-dbgsym"
        }
    ]
}