UBUNTU-CVE-2023-4911

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Source
https://ubuntu.com/security/CVE-2023-4911
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-4911.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2023-4911
Upstream
Downstream
Related
Published
2023-10-03T17:00:00Z
Modified
2025-07-16T07:20:49.386709Z
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
  • 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
  • Ubuntu - high
Summary
[none]
Details

A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBCTUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBCTUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges.

References

Affected packages

Ubuntu:22.04:LTS / glibc

Package

Name
glibc
Purl
pkg:deb/ubuntu/glibc@2.35-0ubuntu3.4?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.35-0ubuntu3.4

Affected versions

2.*

2.34-0ubuntu3
2.35-0ubuntu1
2.35-0ubuntu3
2.35-0ubuntu3.1
2.35-0ubuntu3.3

Ecosystem specific 

{
    "priority_reason": "Local privilege escalation in a package that is installed on all Ubuntu instances.",
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "glibc-doc",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "glibc-source",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "libc-bin",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "libc-bin-dbgsym",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "libc-dev-bin",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "libc-dev-bin-dbgsym",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "libc-devtools",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "libc-devtools-dbgsym",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "libc6",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "libc6-amd64",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "libc6-amd64-dbgsym",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "libc6-dbg",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "libc6-dev",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "libc6-dev-amd64",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "libc6-dev-i386",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "libc6-dev-s390",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "libc6-dev-x32",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "libc6-i386",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "libc6-i386-dbgsym",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "libc6-prof",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "libc6-s390",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "libc6-s390-dbgsym",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "libc6-x32",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "libc6-x32-dbgsym",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "locales",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "locales-all",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "nscd",
            "binary_version": "2.35-0ubuntu3.4"
        },
        {
            "binary_name": "nscd-dbgsym",
            "binary_version": "2.35-0ubuntu3.4"
        }
    ]
}

Ubuntu:24.04:LTS / glibc

Package

Name
glibc
Purl
pkg:deb/ubuntu/glibc@2.38-1ubuntu6?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.38-1ubuntu6

Ecosystem specific 

{
    "priority_reason": "Local privilege escalation in a package that is installed on all Ubuntu instances.",
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "glibc-doc",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "glibc-source",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "libc-bin",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "libc-bin-dbgsym",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "libc-dev-bin",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "libc-dev-bin-dbgsym",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "libc-devtools",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "libc-devtools-dbgsym",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "libc6",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "libc6-amd64",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "libc6-amd64-dbgsym",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "libc6-dbg",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "libc6-dev",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "libc6-dev-amd64",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "libc6-dev-dbgsym",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "libc6-dev-i386",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "libc6-dev-s390",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "libc6-dev-x32",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "libc6-i386",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "libc6-i386-dbgsym",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "libc6-prof",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "libc6-s390",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "libc6-s390-dbgsym",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "libc6-x32",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "libc6-x32-dbgsym",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "locales",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "locales-all",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "nscd",
            "binary_version": "2.38-1ubuntu6"
        },
        {
            "binary_name": "nscd-dbgsym",
            "binary_version": "2.38-1ubuntu6"
        }
    ]
}