UBUNTU-CVE-2019-18634

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Source
https://ubuntu.com/security/CVE-2019-18634
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-18634.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2019-18634
Related
Published
2020-01-31T00:00:00Z
Modified
2025-01-13T10:22:01Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

In Sudo before 1.8.26, if pwfeedback is enabled in /etc/sudoers, users can trigger a stack-based buffer overflow in the privileged sudo process. (pwfeedback is a default setting in Linux Mint and elementary OS; however, it is NOT the default for upstream and many other packages, and would exist only if enabled by an administrator.) The attacker needs to deliver a long string to the stdin of getln() in tgetpass.c.

References

Affected packages

Ubuntu:Pro:14.04:LTS / sudo

Package

Name
sudo
Purl
pkg:deb/ubuntu/sudo@1.8.9p5-1ubuntu1.5+esm3?arch=source&distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.8.9p5-1ubuntu1.5+esm3

Affected versions

1.*

1.8.6p3-0ubuntu3
1.8.8-2ubuntu1
1.8.8-2ubuntu2
1.8.9p4-1ubuntu1
1.8.9p4-1ubuntu2
1.8.9p5-1ubuntu1
1.8.9p5-1ubuntu1.1
1.8.9p5-1ubuntu1.2
1.8.9p5-1ubuntu1.3
1.8.9p5-1ubuntu1.4
1.8.9p5-1ubuntu1.5+esm1
1.8.9p5-1ubuntu1.5+esm2

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "binary_name": "sudo",
            "binary_version": "1.8.9p5-1ubuntu1.5+esm3"
        },
        {
            "binary_name": "sudo-dbgsym",
            "binary_version": "1.8.9p5-1ubuntu1.5+esm3"
        },
        {
            "binary_name": "sudo-ldap",
            "binary_version": "1.8.9p5-1ubuntu1.5+esm3"
        },
        {
            "binary_name": "sudo-ldap-dbgsym",
            "binary_version": "1.8.9p5-1ubuntu1.5+esm3"
        }
    ]
}

Ubuntu:16.04:LTS / sudo

Package

Name
sudo
Purl
pkg:deb/ubuntu/sudo@1.8.16-0ubuntu1.9?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.8.16-0ubuntu1.9

Affected versions

1.*

1.8.12-1ubuntu3
1.8.16-0ubuntu1
1.8.16-0ubuntu1.1
1.8.16-0ubuntu1.2
1.8.16-0ubuntu1.3
1.8.16-0ubuntu1.4
1.8.16-0ubuntu1.5
1.8.16-0ubuntu1.6
1.8.16-0ubuntu1.7
1.8.16-0ubuntu1.8

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "binary_name": "sudo",
            "binary_version": "1.8.16-0ubuntu1.9"
        },
        {
            "binary_name": "sudo-dbgsym",
            "binary_version": "1.8.16-0ubuntu1.9"
        },
        {
            "binary_name": "sudo-ldap",
            "binary_version": "1.8.16-0ubuntu1.9"
        },
        {
            "binary_name": "sudo-ldap-dbgsym",
            "binary_version": "1.8.16-0ubuntu1.9"
        }
    ]
}

Ubuntu:18.04:LTS / sudo

Package

Name
sudo
Purl
pkg:deb/ubuntu/sudo@1.8.21p2-3ubuntu1.2?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.8.21p2-3ubuntu1.2

Affected versions

1.*

1.8.20p2-1ubuntu1
1.8.21p2-2ubuntu1
1.8.21p2-3ubuntu1
1.8.21p2-3ubuntu1.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "binary_name": "sudo",
            "binary_version": "1.8.21p2-3ubuntu1.2"
        },
        {
            "binary_name": "sudo-dbgsym",
            "binary_version": "1.8.21p2-3ubuntu1.2"
        },
        {
            "binary_name": "sudo-ldap",
            "binary_version": "1.8.21p2-3ubuntu1.2"
        },
        {
            "binary_name": "sudo-ldap-dbgsym",
            "binary_version": "1.8.21p2-3ubuntu1.2"
        }
    ]
}