UBUNTU-CVE-2023-6780

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Source
https://ubuntu.com/security/CVE-2023-6780
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-6780.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2023-6780
Upstream
Related
Published
2024-01-31T00:00:00Z
Modified
2025-09-08T16:56:01Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

An integer overflow was found in the _vsysloginternal function of the glibc library. This function is called by the syslog and vsyslog functions. This issue occurs when these functions are called with a very long message, leading to an incorrect calculation of the buffer size to store the message, resulting in undefined behavior. This issue affects glibc 2.37 and newer.

References

Affected packages

Ubuntu:24.04:LTS / glibc

Package

Name
glibc
Purl
pkg:deb/ubuntu/glibc@2.39-0ubuntu1?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.39-0ubuntu1

Affected versions

2.*

2.38-1ubuntu6
2.38-3ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "glibc-source",
            "binary_version": "2.39-0ubuntu1"
        },
        {
            "binary_name": "libc-bin",
            "binary_version": "2.39-0ubuntu1"
        },
        {
            "binary_name": "libc-dev-bin",
            "binary_version": "2.39-0ubuntu1"
        },
        {
            "binary_name": "libc-devtools",
            "binary_version": "2.39-0ubuntu1"
        },
        {
            "binary_name": "libc6",
            "binary_version": "2.39-0ubuntu1"
        },
        {
            "binary_name": "libc6-amd64",
            "binary_version": "2.39-0ubuntu1"
        },
        {
            "binary_name": "libc6-dev",
            "binary_version": "2.39-0ubuntu1"
        },
        {
            "binary_name": "libc6-dev-amd64",
            "binary_version": "2.39-0ubuntu1"
        },
        {
            "binary_name": "libc6-dev-i386",
            "binary_version": "2.39-0ubuntu1"
        },
        {
            "binary_name": "libc6-dev-s390",
            "binary_version": "2.39-0ubuntu1"
        },
        {
            "binary_name": "libc6-dev-x32",
            "binary_version": "2.39-0ubuntu1"
        },
        {
            "binary_name": "libc6-i386",
            "binary_version": "2.39-0ubuntu1"
        },
        {
            "binary_name": "libc6-s390",
            "binary_version": "2.39-0ubuntu1"
        },
        {
            "binary_name": "libc6-x32",
            "binary_version": "2.39-0ubuntu1"
        },
        {
            "binary_name": "locales",
            "binary_version": "2.39-0ubuntu1"
        },
        {
            "binary_name": "locales-all",
            "binary_version": "2.39-0ubuntu1"
        },
        {
            "binary_name": "nscd",
            "binary_version": "2.39-0ubuntu1"
        }
    ],
    "availability": "No subscription required"
}