UBUNTU-CVE-2020-27743

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Source
https://ubuntu.com/security/CVE-2020-27743
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-27743.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-27743
Upstream
Published
2020-10-26T22:15:00Z
Modified
2025-09-08T16:46:27Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

libtac in pamtacplus through 1.5.1 lacks a check for a failure of RANDbytes()/RANDpseudobytes(). This could lead to use of a non-random/predictable session_id.

References

Affected packages

Ubuntu:Pro:16.04:LTS / libpam-tacplus

Package

Name
libpam-tacplus
Purl
pkg:deb/ubuntu/libpam-tacplus@1.3.8-2+deb8u1build0.16.04.1?arch=source&distro=esm-apps/xenial

Affected ranges

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

Affected versions

1.*

1.3.8-2
1.3.8-2+deb8u1build0.16.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libpam-tacplus",
            "binary_version": "1.3.8-2+deb8u1build0.16.04.1"
        }
    ]
}

Ubuntu:Pro:18.04:LTS / libpam-tacplus

Package

Name
libpam-tacplus
Purl
pkg:deb/ubuntu/libpam-tacplus@1.3.8-2+deb8u1build0.18.04.1?arch=source&distro=esm-apps/bionic

Affected ranges

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

Affected versions

1.*

1.3.8-2
1.3.8-2+deb8u1build0.18.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libpam-tacplus",
            "binary_version": "1.3.8-2+deb8u1build0.18.04.1"
        }
    ]
}

Ubuntu:Pro:20.04:LTS / libpam-tacplus

Package

Name
libpam-tacplus
Purl
pkg:deb/ubuntu/libpam-tacplus@1.3.8-2+deb8u1build0.20.04.1?arch=source&distro=esm-apps/focal

Affected ranges

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

Affected versions

1.*

1.3.8-2
1.3.8-2+deb8u1build0.20.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libpam-tacplus",
            "binary_version": "1.3.8-2+deb8u1build0.20.04.1"
        }
    ]
}

Ubuntu:22.04:LTS / libpam-tacplus

Package

Name
libpam-tacplus
Purl
pkg:deb/ubuntu/libpam-tacplus@1.3.8-2.1?arch=source&distro=jammy

Affected ranges

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

Affected versions

1.*

1.3.8-2.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libpam-tacplus",
            "binary_version": "1.3.8-2.1"
        }
    ]
}