UBUNTU-CVE-2019-19126

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2019-19126
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-19126.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2019-19126
Upstream
Downstream
Related
Published
2019-11-19T22:15:00Z
Modified
2025-09-08T16:45:43Z
Severity
  • 3.3 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

On the x86-64 architecture, the GNU C Library (aka glibc) before 2.31 fails to ignore the LDPREFERMAP32BITEXEC environment variable during program execution after a security transition, allowing local attackers to restrict the possible mapping addresses for loaded libraries and thus bypass ASLR for a setuid program.

References

Affected packages

Ubuntu:16.04:LTS / glibc

Package

Name
glibc
Purl
pkg:deb/ubuntu/glibc@2.23-0ubuntu11.2?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.23-0ubuntu11.2

Affected versions

2.*

2.21-0ubuntu4
2.21-0ubuntu5
2.21-0ubuntu6
2.23-0ubuntu1
2.23-0ubuntu2
2.23-0ubuntu3
2.23-0ubuntu4
2.23-0ubuntu5
2.23-0ubuntu6
2.23-0ubuntu7
2.23-0ubuntu9
2.23-0ubuntu10
2.23-0ubuntu11

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "glibc-source",
            "binary_version": "2.23-0ubuntu11.2"
        },
        {
            "binary_name": "libc-bin",
            "binary_version": "2.23-0ubuntu11.2"
        },
        {
            "binary_name": "libc-dev-bin",
            "binary_version": "2.23-0ubuntu11.2"
        },
        {
            "binary_name": "libc6",
            "binary_version": "2.23-0ubuntu11.2"
        },
        {
            "binary_name": "libc6-amd64",
            "binary_version": "2.23-0ubuntu11.2"
        },
        {
            "binary_name": "libc6-armel",
            "binary_version": "2.23-0ubuntu11.2"
        },
        {
            "binary_name": "libc6-dev",
            "binary_version": "2.23-0ubuntu11.2"
        },
        {
            "binary_name": "libc6-dev-amd64",
            "binary_version": "2.23-0ubuntu11.2"
        },
        {
            "binary_name": "libc6-dev-armel",
            "binary_version": "2.23-0ubuntu11.2"
        },
        {
            "binary_name": "libc6-dev-i386",
            "binary_version": "2.23-0ubuntu11.2"
        },
        {
            "binary_name": "libc6-dev-ppc64",
            "binary_version": "2.23-0ubuntu11.2"
        },
        {
            "binary_name": "libc6-dev-s390",
            "binary_version": "2.23-0ubuntu11.2"
        },
        {
            "binary_name": "libc6-dev-x32",
            "binary_version": "2.23-0ubuntu11.2"
        },
        {
            "binary_name": "libc6-i386",
            "binary_version": "2.23-0ubuntu11.2"
        },
        {
            "binary_name": "libc6-pic",
            "binary_version": "2.23-0ubuntu11.2"
        },
        {
            "binary_name": "libc6-ppc64",
            "binary_version": "2.23-0ubuntu11.2"
        },
        {
            "binary_name": "libc6-s390",
            "binary_version": "2.23-0ubuntu11.2"
        },
        {
            "binary_name": "libc6-x32",
            "binary_version": "2.23-0ubuntu11.2"
        },
        {
            "binary_name": "locales",
            "binary_version": "2.23-0ubuntu11.2"
        },
        {
            "binary_name": "locales-all",
            "binary_version": "2.23-0ubuntu11.2"
        },
        {
            "binary_name": "multiarch-support",
            "binary_version": "2.23-0ubuntu11.2"
        },
        {
            "binary_name": "nscd",
            "binary_version": "2.23-0ubuntu11.2"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:18.04:LTS / glibc

Package

Name
glibc
Purl
pkg:deb/ubuntu/glibc@2.27-3ubuntu1.2?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.27-3ubuntu1.2

Affected versions

2.*

2.26-0ubuntu2
2.26-0ubuntu2.1
2.27-0ubuntu2
2.27-0ubuntu3
2.27-3ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "glibc-source",
            "binary_version": "2.27-3ubuntu1.2"
        },
        {
            "binary_name": "libc-bin",
            "binary_version": "2.27-3ubuntu1.2"
        },
        {
            "binary_name": "libc-dev-bin",
            "binary_version": "2.27-3ubuntu1.2"
        },
        {
            "binary_name": "libc6",
            "binary_version": "2.27-3ubuntu1.2"
        },
        {
            "binary_name": "libc6-amd64",
            "binary_version": "2.27-3ubuntu1.2"
        },
        {
            "binary_name": "libc6-armel",
            "binary_version": "2.27-3ubuntu1.2"
        },
        {
            "binary_name": "libc6-dev",
            "binary_version": "2.27-3ubuntu1.2"
        },
        {
            "binary_name": "libc6-dev-amd64",
            "binary_version": "2.27-3ubuntu1.2"
        },
        {
            "binary_name": "libc6-dev-armel",
            "binary_version": "2.27-3ubuntu1.2"
        },
        {
            "binary_name": "libc6-dev-i386",
            "binary_version": "2.27-3ubuntu1.2"
        },
        {
            "binary_name": "libc6-dev-s390",
            "binary_version": "2.27-3ubuntu1.2"
        },
        {
            "binary_name": "libc6-dev-x32",
            "binary_version": "2.27-3ubuntu1.2"
        },
        {
            "binary_name": "libc6-i386",
            "binary_version": "2.27-3ubuntu1.2"
        },
        {
            "binary_name": "libc6-pic",
            "binary_version": "2.27-3ubuntu1.2"
        },
        {
            "binary_name": "libc6-s390",
            "binary_version": "2.27-3ubuntu1.2"
        },
        {
            "binary_name": "libc6-x32",
            "binary_version": "2.27-3ubuntu1.2"
        },
        {
            "binary_name": "locales",
            "binary_version": "2.27-3ubuntu1.2"
        },
        {
            "binary_name": "locales-all",
            "binary_version": "2.27-3ubuntu1.2"
        },
        {
            "binary_name": "multiarch-support",
            "binary_version": "2.27-3ubuntu1.2"
        },
        {
            "binary_name": "nscd",
            "binary_version": "2.27-3ubuntu1.2"
        }
    ],
    "availability": "No subscription required"
}